The MaculaTester (Patent Pending) visual function screening test is a valuable tool in the early diagnosis and monitoring of macular diseases including age related macular degeneration (AMD). AMD is the leading cause of blindness in people over 65 years of age, affecting over 25 million people worldwide. If not managed properly, up to 20% of patients with AMD go blind. Image distortion is often the first visual change the patients notice when the condition is advancing. The distortion can be subtle and difficult to notice at first, so a test known as an Amsler grid is used to help detect these changes. Most doctors give their patients a card with an Amsler grid to test themselves at home between doctor visits. The Amsler grid card is a great tool in the management of macular diseases as it can help detect changes while they are still treatable, thus preventing permanent visual loss. Unfortunately, most patients forget to use the card regularly or loose it altogether. The MaculaTester is an electronic test that serves the same function as the Amsler grid but with several distinct advantages: 1) It is interactive - allowing you to record the area of distortion by touching the screen. The recorded image is saved with the date and time so you can show it to your doctor, as well as compare to previous images to look for any changes. 2) It solves the main problems with the regular Amsler grid - It resides on your iPhone or iPod Touch - so you wont lose it, and our free push notification feature reminds you to perform the test at regular intervals - so you won t forget to use it. -CHECK OUT THE VIDEO DEMONSTRATION ON OUR WEBSITE - www.maculatester.com. - This app is intended for use only as an early screening test for macular dysfunction. It is not designed or intended to be used as a tool to diagnose macular degeneration or any other disease process. This test is not a substitute for an examination by a qualified eye care professional.