Sprint Recap: Barretos Teledermatology Project

So, what exactly is a Sprint?

In working on projects, we’ve all hit a snag or potential issue that has stalled progress. To get a product from just an idea on a napkin to a tangible and functioning device takes a lot of brainstorming and foresight. The sprint methodology (developed by Google Ventures) allows for the development of interdisciplinary teams and a diversity of ideas. By understanding a patient flow (how a product may interact with different stakeholders), we can get insight on where would be a good target point for progressing a project.  After identifying target points, we can begin brainstorming the best paths to take and eventually build a physical representation of an idea (whether it be a prototype or beta app). Most of the time, these are facades in which we gain user feedback that can provide invaluable information on a future direction for the project. This semester, our Brazil GMI team will take turns running our own sprints in which we get to work on each other’s projects for a week at a time (starting on Tuesdays and reporting out on Mondays). This format allows us to take advantage of utilizing individual strengths and fresh perspectives on our implementation project.

Running my Sprints

I’ve had the chance to lead two sprints for my cellphone attachment project. In the first sprint, we spent time brainstorming different attachment methods that we could potentially prototype within a week.  We divided the work based on what I thought were our individual strengths. We all participated in brainstorming, and then we divided and conquered. Ryan was put in charge of CADing and 3D-printing prototypes, I was in charge of developing a testing protocol in which we could analyze the best design and Anna was put in charge of getting user feedback. We were able to finish our first prototype (even though there were certainly some technical challenges involved). This prototype featured a spring clip design that would allow the user to easily snap on and snap off the device.

Cancerous or Benign? You be the judge

In the second sprint for my project, we wanted to finish up loose ends we had from our first sprint and also continue the prototyping phase. One of our other design ideas involved a magnetic attachment system that would allow easy snap-on and off functionality (like the design before), however, this requires a two-piece setup and is a little clunkier as of now. Integrating electrical components to power the LED and integrate USB charging was what I had been working on. After some initial feedback from Dr. Richardson, we thought it would be good to include a design study on the form factor of a potential device. One major consideration that Anna has been evaluating is the question of having a sleeker, more fragile profile vs. a stouter, more robust device. Of course, there are pros and cons to each, so this is definitely a sprint-worthy question!

The “mag-rail” design, as we like to call it

Reflections on what I’ve Learned

On the Mondays of our sprints (the report out), we always have an opportunity to sit down with our teams and ask what we believe we did well, and things we can improve (we refer to these as “plus/deltas”).  When running my first sprint, I can honestly say that there could have some better foresight on my part. One thing we try to eliminate in delegating  sprint roles is interdependency. The idea is for each group member to be completely autonomous and accountable in their work. One of my sprint goals relied heavily on the completion of another objective. Although I wanted to remain aggressive in our idea generation and prototyping, in reality we encountered some snags that lessened our pace. But of course, as you run more sprints, you become more efficient and have better discernment in deciding where to funnel focus and energy. Overall, it has been a great experience working more collaboratively while also having the opportunity to work on my leadership and communication skills.

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A Wicky Tale Pt. 1

What’s up with Truvent?

Design never stops. At least, reiterating and redesigning never stop for medical devices. It is equally as glorious as it is frustrating. Nothing is always sunshine and rainbows, but you do learn a lot when you realize that it isn’t as simple as first thought to be.

In the case of Truvent, we have seen the beauty and the horrors of prototyping a device that needs to address several issues: leaks, form factor, environment, etc. It is difficult, but not for the exact reasons you may think. We are learning all the ways that fail…what was that quote by Thomas Edison?

“I have not failed. I’ve just found 10,000 ways that won’t work.”

Yeah, that’s it. Instead of thinking that we take two steps down a random road and then turn back just to try a different path, we are instead slowly reducing the number of possibilities that just won’t work. Let me be blunt – do not use force sensors (of any kind) if you want data with DC accuracy. They simply have too much hysteresis to be a reliable sensor. I suppose we have been stuck on this problem because we have seen previous teams use them, so we went along with it. Now what’s that Robert Frost quote?

                  “Two roads diverged in a wood and I – I took the one less traveled, and that has made all the difference.” 

It’s easy to follow in the shadows of previous teams because you expect them to be right. It’s quite ironic, actually, since my extracurricular classes have been teaching me to think differently in the exact position I am in now. Strategic Thinking forced me to process a situation though all its possibilities and to understand why certain things can and cannot work. While I am not saying that the previous work has been in vain, it has given me better insight into why certain sensors work and for what reasons. Force sensors are great because they can provide information quickly, but now we are reaching a point in the project where accuracy for feedback is important, and thus a shift is necessary to get the right information that we need. Never settle because something was right previously. In fact, be open to change, and though it may be frustrating, I have learned that this pivot is how we can make Truvent a truly successful product in the future.


What’s up with mind oVR matter?

Ah…yes. We came up with a clever name for our virtual reality project (get it now??). Anyways, after a slow start to the project, we have established contact with a physician in Baylor Medical who is interested in collaborating with us. We are now hitting the ground running! With his support, along with the slow but sure purchases of our VR system, we can now begin planning how we will deliver livestream surgical videos to students. I am extremely excited to begin this project, and we are beginning with developing the protocol to get this to work. If I have learned anything from my previous projects, it is that you need to focus on basic concepts first before adding all the fluff. What I mean in this context is that we need to first deliver a video from the 360 camera to a person using a VR headset, neglecting HIPAA codes or other variables that (definitely need our attention of course, but…) can be addressed later on. Baby steps, if you will.


What’s up with Chandler/Wicky/Chun/WOOOO?

Not much. I did travel out to Boston recently to see some old friends, but as the program has taught me, always be networking. So I took the chance to visit some people down at Becton Dickinson in the greater Boston area where they do incredible work with advanced diabetes care. It truly is remarkable to see how I have developed as an engineer in the short time I have been in this program – to understand the processes and to have educated discussions on how to improve certain practices was completely novel to me 9 months ago. However, now I can walk into a medtech site and understand their lingo, their methods, and their goals, all while learning how their processes differ to optimize their efforts. It was an eye-opening experience, especially as I jump into the job hunt in these final months of school.

Just some old friends in a new city


We are traveling to San Francisco for a networking event next week, so stay tuned for other blogs to reflect on that experience!

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Going for Gold

With all the Olympic hype, it’s tempting to watch the competitions all day and never do any work. But we, ourselves, are going for our own version of gold: meeting our end of semester project goals. For DialOasis, that means beginning small-scale manufacturing and kicking off the pilot study. For our allergy design project, the goal is to have a final concept and low fidelity prototype by May. Below is what my team and I have been up to these past few weeks.


Sprint Kick off Planning

Last week I finally led my first sprint. Building off of the outcome of Siri’s sprint where we modified the tarp wall and sink designs based off of experiences rapidly prototyping these components, we had to figure out how to communicate these new designs to Invenio. Therefore, the week was full of SolidWorks modeling and building plan drafting. It was not the most fun work. It was certainly not prototyping. But it had to be done. I’m glad that we had Callie and Tasha to help us. My goals were perhaps overly ambitious, but we all hunkered down and got the work done. Now we can hopefully ease up on the redesign and manufacturing and turn to pilot study logistics.

Design Project

My design project with Callie and Josh has been making progress. It sometimes seems on the backburner with sprints as the centerpiece of the semester, but we are moving along. We met with a renowned allergist at Texas Children’s last week and gained a lot of insight into the patient/allergist relationship and steps in the cycle of care for a food allergy patient. We have also been trying to broaden our focus. Our project originally focused on a food allergen detector device. After some technology and IP searches, we realized that we might not want to limit ourselves to that space. Therefore, lately we have done a lot of brainstorming of solutions at various timepoints in the patient cycle of care. We’ve definitely used a ton of sticky notes to organize our ideas. Between brainstorming sessions and sprint kickoffs, at this point the number of sticky note pads we go through has become something of a badge of honor, marking how much work we’ve accomplished this semester.

While the past few weeks in GMI have been relatively calm, there is a lot looking forward. On Sunday, a number of us GMIers leave for a Bay Area networking trip and, at some point this semester, Siri and I will be traveling to Costa Rica to hopefully kick off DialOasis manufacturing. This past month has been a lot of unglamorous work, but like in the Olympics, 99% of the work is done behind the scenes for a few seconds of glory. It’s also in this day-to-day work that one learns the most.

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Sprints and Sinks

Wow, another month has flown by in GMI! Lately, I’ve been spending most of time juggling sprints, Consultika, classes, and our food allergy project. I feel like I’m making progress on my various projects in leaps and bounds (and sometimes fits and starts). Inevitably, one project seems to dominate my time for a few days and has a breakthrough then stalls and I pick up where I left off on another project. I actually really enjoy this setup because it keeps me from getting bogged down waiting on one project; it also keeps me engaged as I’m constantly switching gears. There’s never a dull moment!

A couple weeks ago, I led my very first sprint on Consultika. Before the kickoff, I prepared by creating a project map, which is basically a plan detailing the current project status, people involved, the project’s longer-term goals, and how to achieve those goals. For Consultika, the map mostly consisted of the paperwork pathways to IRB approval to start our clinical trial before I graduate. (On a side note, I recently submitted the application for Rice IRB approval which was a big milestone). There was one spot in my map that was perfect for a sprint: training clinicians to use the app. So on Day 1 of the sprint, Siri, Abby, and Tasha helped me brainstorm key questions that we would try to answer during our sprint. Then I organized these questions on the white board (see pic below) and we voted on which were the most important to tackle for the week. We ended up choosing to brainstorm and prototype three different ways to train the clinicians and then try to predict potential pitfalls in these methods. So on Day 2, we met for an hour to brainstorm. Our top three training methods were: video tutorials, an in-app pre-use tutorial, and an in-app interactive walk-through. Each of my teammates spent the rest of the week prototyping one of these ideas while I racked my brain to devise a way to ensure the efficacy of the training. Then, on Day 6 (we took a few days off for Rice’s spring recess), we debriefed and presented our solutions to the group. I was quite impressed with the work that we accomplished in such a short time. Siri, Abby, and Tasha came up with ideas that would have never crossed my mind; I’m really grateful for their help on Consultika.

Leading the Consultika sprint. Lots of questions to answer.

After my sprint, I decided not to pursue the in-app options for training. The main reason was that I felt they were unnecessary at this point. I created enough of the in-app walkthrough for proof of concept, but I believe it’s something that should wait until the final version of the app because we will undoubtedly make some changes to the app after the clinical trial. In choosing a training method, I have to make it adaptable for users with little and lots of experience using apps (if they’re like me, they’ll probably just want to play with the app to learn it on their own without instructions). I  must also balance the resources used to create the training with its effect on the clinical trial, which may be minimal. With this in mind, I decided to pursue a series of short video tutorials to train the clinicians. And to make it adaptable for various users, I decided to implement a “test case.” This test case is virtually identical to the real app, but the clinicians enter in their own data instead of patient data. Thus, the users can decide for themselves if they need to complete the app training or not and yet they still have to complete a test case to ensure that they can correctly use the app.

Abby and me revving the power tools to create DialOasis’s sink frame.

For our other recent sprints, we have been working on DialOasis. Specifically, I have been helping Abby and Siri to create the DialOasis sink. For the first sprint, we built several prototypes of the sink; each one was progressively more complex (see photo below). First, Abby and I built a simple wooden frame to surround the buckets that comprise the functional part of the sink. Then, we covered three sides with wood panels then tarp and added a sink basin. Finally, we added a tarp flap to the front of the sink so that it is more aesthetically pleasing, but the buckets can still be easily emptied and refilled. I love to prototype because I always learn so many practical things about the design: for example, a flap that opens upward is more convenient than one that opens sideways like a door, velcro doesn’t stick to wood, and 17 inches wide is an inch too wide for the frame. So with these lessons in mind, we transitioned into our next DialOasis sprint two weeks later. In this sprint, I made a SolidWorks (3D computer) model of our updated design for the sink. Both of these sprints happily gave me a break from the computer side of my life (Consultika) and put me back in touch with my mechanical side. I think I was grinning a lot during these sprints as I got to build things with my own hands, and I’m very proud of what we accomplished as a team.

DialOasis’s sink, from frame to tarp to computer modeling.

As always, there’s time for fun with GMI. Some of the materials and gadgets for Tasha’s stent project came in and it felt like Christmas all over again. This was amplified by the fact the our NIMA device arrived the same day for our allergy project. NIMA is a small device that can detect traces of gluten in a capsule of food; we have yet to try it, but I’ll keep you updated. Also, I went to a Lunar New Year celebration with some friends and almost got eaten by a lion. I’m taking advantage of Houston’s diverse culture to experience as many festivals and celebrations as I can.

About to be eaten by a lion at the Lunar New Year celebration.

It feels like Christmas when new supplies come in.

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The Sprinting Begins

We’re already three weeks into our last semester, but it still hasn’t quite kicked in that we will be done with the GMI program in just a few short months. This semester will be focused around our projects and the job search—which is a project all in itself.

For our implementation projects (mine being Truvent), we are using a different structure this semester. Each week, we will run a sprint, in which one of the team members is the lead, and we focus on answering a few specific questions for that person’s project. The idea behind this method is to put a lot of effort towards a specific focus in order to make significant progress in a short time. I led the first sprint for my team with Chandler and Sanjana this past week. As a reminder, Truvent is a project focused on creating a sensory feedback system to help improve BVM ventilation for EMTs and paramedics. This week, we focused on creating a system to gather force data on different points of the mask, determining a method to identify breaks in the seal, obtaining IRB approval to run a clinical study with Rice EMS, and deciding what method of feedback we want to incorporate in our system. Overall, it was a successful week, and I’m excited to continue pushing this project forward for the rest of this semester.

In addition to my implementation project, I will also be working on another project with Tasha and Chandler. The goal of this project is to establish a virtual reality capability (VR) for the GMI program. VR has become a huge phenomenon, especially in gaming. If you’ve never had the chance to try it out, I would highly recommend it! We went to a VR arcade here in Houston to experience their system, and it was a ton of fun. We played fruit ninja and explored various places on Google Earth. VR gives you the ability to be fully immersed in your environment and can be a huge tool for educational purposes. For the GMI program, we want to create a system that can be used for virtual ethnography, which is essentially giving us the ability to watch medical procedures in VR without needing to actually be in the operating room. This will be a great asset for this program, because it will allow the students to be completely immersed in the clinical environment but from a fly on the wall type perspective. In addition to virtual ethnography, this system could be beneficial for students to visualize anatomy and 3D designs in the future.

This semester I am also taking a strategic thinking course as my professional development elective. In this course, we will learn techniques to solve complex problems, and we get to apply what we learn to an individual project of our choosing. For my project, I will be developing a post-FDA approval strategy for the company that I am interning with, Multisensor Diagnostics. I will be focusing on the manufacturing and distribution process for the company. This will be a great opportunity to learn new problem solving skills and contribute to a company that is providing a beneficial service to patients with chronic diseases.

Needless to say, this is going to be a busy semester that will be over before we know it. Although I am sad to see it coming to an end, I want to enjoy every minute of this semester before it’s over. Let the sprinting begin!

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We’re back!!

After a month of winter break that felt incredibly empty without GMI, I was so excited to return to Rice, catch up with the rest of the group, and get back into the swing of things.

We are three weeks into the semester now, and it’s been as eventful as ever. We started the semester off with some uncharacteristically cold weather, and actually had school cancelled for 2 days due to snow! The snow was fun to play in, but I’m definitely glad Houston has since returned to its comfortable 60˚ weather, and we’ve already gotten the ball rolling on projects.

This semester, we are tackling our implementation projects in a Sprint format. One person leads a Sprint with their team each week, where the whole team works on that project. Last week, Karlee led the Sprint for the TruWaves team and we focused on TruVent, Karlee and Chandler’s project. I really enjoyed getting the opportunity to learn more about this project and the chance to just dive right in. Chandler and I focused on building a prototype for a force-sensing mechanism that could be used when they test their bag-valve masks. We wired up some force sensors and used an Arduino to process the data, and we actually got the device to work! Moving forward, the team can now focus on tweaking this design and getting it ready for testing.

Aside from implementation projects, we are also starting to work on design projects that are based on the clinical needs finding that the group did last semester. One of the needs that I found is actually being turned into a project, which I am really excited about! I started thinking about this need during our trip to Costa Rica last semester. While we were in the NICU at Hospital México, we saw ophthalmologists inspecting the babies for retinopathy of prematurity (ROP). This got me thinking about this disease, and after some research and reading, I learned that the diagnosis and monitoring of ROP is actually really difficult in many parts of the world due to a lack of access to well-trained ophthalmologists. As a result, it is the leading cause of avoidable childhood blindness in the world – something that I found very troubling. Moreover, the problem disproportionately affects middle-income countries. Infant mortality rates are declining in many of these countries, but many patients still don’t have access to the quality of health care that they need. As a result, many infants are surviving long enough to develop ROP and, consequently, vision impairment. Because the disease is very treatable and manageable if diagnosed correctly, this seemed like an interesting opportunity for a design project.

I am working on this team with Anna, Siri and Ryan, and this past week we began researching and validating our need. We also had our project proposal presentation to the rest of GMI. Our team has already made a plan for the first half of the semester, and I’m really excited to see where this project goes!

All in all, I’m really excited about the direction my projects are headed in. It feels great to see so many things finally coming to fruition after months of hard work. I’m continuously impressed by the progress my peers are making, and I can’t wait to see where things end up this semester!

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VRoom VRoom

This semester I have two main projects and I will have the opportunity to contribute to my teammates’ projects through our weekly Sprints. I may have mentioned this while we were in Costa Rica, but a Sprint is essentially a focused week on one problem within a long term goal with the output of a set of prototypes. Last semester, our progress on our implementation projects were essentially marathons, steady and long improvements in each cycle. Now with these Sprints (hence the name), we condense our efforts with our teams and put in 3-4x the work on one project for a one week span! It’s exciting because my team and I have already produced 5 new prototype concepts for my Stent-X project in preparation for our next animal study at the end of February. It makes me really appreciate the importance of having a team effort on a project because not only is the output more fruitful, but in addition the span of ideas spark interesting conceptual discussions.

Stent-X Project Map


Sprint #1 Kick-off

In addition to my implementation project and weekly Sprints, we have also kick started our design projects. Chandler, Karlee, and I are on the Virtual Reality (VR) team, where we are working on bringing VR to Rice University and especially to future GMI students. The possibilities are endless with VR, but we are mainly focusing on virtual ethnography, medical and anatomical education, and medical device design. Imagine being able to be in the room of a catheterization lab procedure and conduct clinical needs finding with a fully immersive experience. Or imagine creating a medical device and being able to test it out before actually manufacturing it. We are now in the process of finalizing our selection for the system and we can’t wait to finally set it up! Karlee, Chandler, and I had the chance to do some VR research at a nearby arcade to help with the selection process. 🙂

Fruit ninja with the HTC Vive VR set!

VRoom VRoom https://www.youtube.com/watch?v=5LfeJdpk3K4

As a fun little group activity, we also went to an Apollo mission themed escape room where we may or may not have been successful, but we did have a great time!

Apollo Mission Escape Room

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Back at it!

Crazy to believe that we’re already in the last semester of GMI! Winter break was nice and long, but flew by super quickly. The semester is picking up fast, but I’m excited to have the chance to work with more of my teammates than I did last semester.

This semester we will be working on our implementation projects using the Sprint format. This will be a unique opportunity to get a lot of work done on our project in a short amount of time. I will be leading this week’s upcoming sprint, and am glad to have more hands and minds working on the project! Below is the sprint map I created to detail what we want to accomplish this semester. It was a useful exercise to detail who was responsible for what, and see how everything relates to get us to our final goal of being ready to start clinical trials in May. For our BIOE 530 class, we have started to work on our design projects. I’ve been working with Sanjana, Anna, and Ryan on defining our project, which is focused on diagnosing and monitoring Retinopathy of Prematurity (ROP) in middle-income countries. It’s been different working in a bigger group of just GMI students, and also nice to work with people that I haven’t yet worked with! ROP is a disease I am not that familiar with, so we’ve been spending the last few weeks familiarizing ourselves with the disease state, and will continue to do this background research for a few more weeks. I’m excited to see where this project takes us this semester, and to get to work for a different patient population!

Finally, it’s also been fun to hang out with the GMI crew. Karlee, Tasha, Sanjana and I all explored the Hermann Park area. I had never been to the McGovern gardens before, and the gardens were just as beautiful as the weather. I’m glad I have such a great crew to explore Houston with!

Karlee, Tasha, Sanjana and me enjoying some tacos on a nice day in the park.

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It’s a Sprint, not a (Half) Marathon

We’ve begun our Sprints! (I’ll explain what that means below.) However, I’m a distance girl. On January 14th I ran the Houston Half Marathon. The Chevron Marathon/Aramco Half is one of the biggest marathons in the country. It was a great way to get pumped up and start the semester!

Tired, but all smiles after finishing the half marathon

Despite my love of distance, we’re moving onto the Sprints for GMI. For those of you who don’t know, Sprints are a method developed by Jake Knapp and colleagues while working at Google Ventures. The method is a five-day process to solve problems through prototyping and customer testing. We’re adapting this method for our own implementation projects. Here’s how the sprints will work. Siri and I are teaming up with Tasha and Callie. Each week we will rotate who leads the sprint and work on her implementation project. So when Callie leads, we will bring together all our minds to work on Consultika. Likewise, Tasha will lead StentX and Siri or I DialOasis. Let me tell you, we’ve already done one “meta sprint” the first week to plan out the semester and the method definitely works– maximum output for our effort. The method also allows us to put our skills to use on other projects. After the meta sprint, our first real sprint was led by Tasha. Before the Sprint began, we had a brainstorming session with the whole StentX team from Fannin. While I went into the meeting a bit hesitant because I only have limited knowledge of StentX, I came out of the meeting with not only a better understanding of the project but a sense of confidence. It’s exciting to dive into another project and add to my skillset and knowledge base.

While the implementation projects from last semester roll over into this one, our other projects do not. No longer am I working on Activated. Instead, I’ll be working with Callie and Josh on a design project related to detecting common food allergens. At least that’s the topic right now. Since these projects originated from the 100 needs we all collected last semester, we must still further validate and refine them. We’ve already had a meeting with our mentor in the med center and even had a few patient interviews. I’m looking forward to working with my new teammates and will keep you updated as the project progresses.

In addition to the GMI courses, I am also taking a Strategic Thinking course and a Medical Human Factors course. There are a number of us GMIers in Human Factors and although it is a lot of reading, it’s a topic I’m passionate about. If you’re an engineer and design a brilliant device that can save lives, yet the doctor or whomever your customer is cannot use it, it’s essentially useless! If it’s not intuitive, it may very likely fail. There’s a reason that I conducted clinician interviews at my internship last semester. We need to understand what the customer wants and needs. Thus, this field of study is extremely relevant to anyone wanting to work in medtech. Medical errors are a huge problem, the statistics staggering. So if I could learn (all of us could learn) to design devices that minimize the chance of error, just imagine!

It’s crazy to think we have less than four months to graduation. There’s still so much to do. Sometimes it can feel like a marathon, but we’re ready to Sprint our way to the finish. Let the excitement begin!


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There’s never a dull day in GMI…

After nearly a full month of winter break, I’m ready to bring my projects back up to speed.

Josh, Dr. Richardson and I were invited to present our work in telemedicine at MD Anderson on January 19. I spent the majority of the week prior working on the presentation and putting the finishing touches on my REDCap project. Aside from showing some PowerPoint slides, I planned on recording some videos of the app and also giving a live demonstration. In past experiences, switching up the medium of information keeps the audience engaged. The hour-long presentation went great, and it was a great opportunity to share our work with the many physicians, nurses, and researchers at MD Anderson who also use REDCap in their projects!


A new project has also been launched with Ryan, Siri, Sanjana, and me. We are validating a need in premature babies at risk of retinopathy. It’s an interesting problem Sanjana originally found last semester. More premature born babies in developing countries are living due to increased life-sustaining technologies; however, a lack of trained neonatal ophthalmologists and a high-coverage screening method means some babies who show early signs of retinopathy may not be diagnosed. Early and mid-stage retinopathy is completely preventable and treatable, yet once it reaches later stages, a child risks complete blindness. Premature-induced retinopathy accounts for 25% of all childhood blindness in Mexico and other similar developing countries.This is a problem we can solve. Our team estimates in 3-4 months we’ll have several prototyped ideas that a future GMI student can take on and turn into a reality.

It’s never a dull day at GMI with juggling presentations, classes, projects, and job applications. For the next month, I plan on completing paperwork and gathering resources needed for a clinical trial in Brazil in March. Exciting things ahead!

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