My Call Bag on Instagram: "Ever need to quickly estimate a glasses prescription on call or without a lensometer? The My Call Bag Lensometer makes it possible, no bulky equipment required. In this video, we walk you through the My Call Bag Lensometer tool, available in the My Call Bag app. Using nothing more than your smartphone and a Amsler Grid, you can estimate a patient’s glasses prescription. HOW IT WORKS: The My Call Bag Lensometer uses a custom-built machine learning and artificial intelligence model to analyze images of an Amsler Grid viewed through a spectacle lens. The AI model processes the distortion patterns captured by your phone’s camera and translates them into estimated refractive values for sphere, cylinder, and axis. It’s fast, portable, and designed for eye care providers who need a practical solution when traditional tools aren’t available. GET STARTED: • Download the My Call Bag app: https://MyCallBag.com • Print or access the Amsler Grid: https://AmslerGr.id This tool is perfect for optometrists, ophthalmologists, and opticians, mission trips, or any situation where a standard lensometer isn’t within reach. DISCLAIMER: The My Call Bag Lensometer provides estimated values and is not intended to replace a calibrated lensometer for final prescriptions. Always verify results with standard equipment when available.#ophthalmology #optometry #mycallbag #eyecare #medicalapps"
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2,634 likes, 99 comments - mycallbag on February 23, 2026: "Ever need to quickly estimate a glasses prescription on call or without a lensometer? The My Call Bag Lensometer makes it possible, no bulky equipment required. In this video, we walk you through the My Call Bag Lensometer tool, available in the My Call Bag app. Using nothing more than your smartphone and a Amsler Grid, you can estimate a patient’s glasses prescription. HOW IT WORKS: The My Call Bag Lensometer uses a custom-built machine learning and artificial intelligence model to analyze images of an Amsler Grid viewed through a spectacle lens. The AI model processes the distortion patterns captured by your phone’s camera and translates them into estimated refractive values for sphere, cylinder, and axis. It’s fast, portable, and designed for eye care providers who need a practical solution when traditional tools aren’t available. GET STARTED: • Download the My Call Bag app: https://MyCallBag.com • Print or access the Amsler Grid: https://AmslerGr.id This tool is perfect for optometrists, ophthalmologists, and opticians, mission trips, or any situation where a standard lensometer isn’t within reach. DISCLAIMER: The My Call Bag Lensometer provides estimated values and is not intended to replace a calibrated lensometer for final prescriptions. Always verify results with standard equipment when available.#ophthalmology #optometry #mycallbag #eyecare #medicalapps".

Original Reddit post

Hi, I’m an ophthalmologist and sometimes on call it’s nice to have an estimate someone’s glasses prescription. I used Claude code to create a machine learning model to estimate glasses prescriptions. Basically, I took about 10,000 images of an Amsler Grid through various lenses. I use Claude code to:

  • make the image acquisition program
  • Create a standardized Amsler Grid to image (AmslerGr.id)
  • train a machine learning model
  • deploy an app with the model and launch on the App Store I posted it on Instagram and in two days it had over 100,000 views organically! Here’s a video of it in action: https://www.instagram.com/reel/DVGvmjjjjsY/ You can learn more about the app that has a ton of other features at MyCallBag.com submitted by /u/MyCallBag

Originally posted by u/MyCallBag on r/ClaudeCode