Eye chart number). The denominator indicates the distance in feet at which a person with normal vision could stand to correctly identify the same symbols identified by the person tested. For example, a visual acuity of 20/20 is considered normal. Numerous types of eye charts exist and are used in various situations. For example, the Snellen chart is designed for use at 6 meters or 20 feet, and is thus appropriate for testing distance vision. There is often also a need to test a subject's vision at near or occupational tasks (such as reading or computer use). For these situations, a Rosenbaum
Unite For Sight Unite For Sight Unite for Sight is a 501(c)(3) non-profit organization founded in 2000 by Jennifer Staple-Clark specializing in healthcare delivery to communities around the world. The organization invests human and financial resources in local eye clinics in Ghana, Honduras, and India to eliminate patient barriers to care. As of January 2017, Unite for Sight has assisted more than 2.4 million people worldwide and provided over 97,000 vision-restoring surgeries. The Global Impact Corps is a volunteer abroad program that places students and professionals with Unite For Sight’s local eye clinic partners. After completing global health training, Global Impact Fellows travel