Across the world, 2.5 billion people lack access to eye care. As a result, millions suffer from vision loss that could be prevented or treated. Andrew Bastawrous, an eye surgeon and inventor, founded Peek Vision, an organization that builds accessible tools to bring eye health to more people. Peek’s app, Peek Acuity, available for free download, allows anyone to measure visual acuity. Designed by eye care professionals, it’s meant to be used to help identify people who need further examination by an optometrist or ophthalmologist. Peek also offers a low-cost, smartphone-based ophthalmoscope that enables retinal imaging using any smartphone. Designed to enable your smartphone camera to capture retinal images through a dilated pupil, it can be used in any environment from clinical settings to remote rural areas. For more information, visit the Peek Vision website.