EyeGo: Smartphone Adapter
For this project, I designed and built smartphone adapters that allow doctors to take pictures of the back back of patient's eyes.
Final SLS prototypes in use during the feasibility studies in India. From Ludwig, Cassie A et al. “A Novel Smartphone Ophthalmic Imaging Adapter: User Feasibility Studies in Hyderabad, India.” Indian Journal of Ophthalmology 64.3 (2016): 191–200. PMC. Web. 20 June 2016.
Date: 2013-2014
Team: Alexandre Jais, Robert Chang, MD, and David Myung, MD, PhD
Project: Eye-Go
Role: Early Design, Mechanical Engineering, Prototype Building
The goal of Eye-go is to bring cheap front and back of eye examination to as many people as possible using smartphones and cheap adapters. Observing the back of the eye allows early detection of a variety of conditions including diabetic retinopathy.
My involvement with the project began when the idea stemmed out of Stanford school of medicine joint start-up week-end event with StartX Med. After an initial extremely rough prototype was put together there, the project continued, led by Robert Chang and Dave Myung on the medical side, with me supporting most of the mechanical design, engineering and prototype production.
Initial prototypes were done on my personal printer in my student bedroom, while subsequent devices were done at the Stanford PRL. Finally a test run of devices was done using SLS printing to support the China and India feasibility studies. The prototypes were constantly tested in the clinic right after they were made which allowed for ultra fast iterations cycles. I was regularly observing the procedure being done at the eye clinic using our device or alternative methods and ended up being the test subject on multiple occasions.
The IP for the device was subsequently licensed by Digisight. The device itself was refined and is now available as the Digisight Paxos Scope, a fully certified product that comes with along with a companion app. The Paxos Scope is available here.
The team: Robert Chang, MD, Alexandre Jais, and David Myung, MD, PhD
One of the first 3D Printed prototypes, done at home on my Rostock Max.
The adapter at the PRL, with wax support
Cleaning the Parts.
Fully 3D Printed Indirect Lens Adapter After Post-Processing
Volk Panretinal 2.2 indirect ophthalmoscopy condensing lens mounted to an iPhone 5
Normal retina photographed using the fully 3-D printed lens-to-phone mount
Final SLS prototypes of the anterior and posterior segment adapters that were sent to India. From Ludwig, Cassie A et al. “A Novel Smartphone Ophthalmic Imaging Adapter: User Feasibility Studies in Hyderabad, India.” Indian Journal of Ophthalmology 64.3 (2016): 191–200. PMC. Web. 20 June 2016.