NETRA (Near-Eye Tool for Refractive Assessment) uses a phone's LCD display(iPhone) and intelligent software to administer a quick, effective and accurate vision test that patients can perform at home.
he NETRA test consists of a small plastic device clipped onto the phone's screen. The patient looks into a tiny lens, presses the phone's arrow keys to make a set of parallel green and red lines overlap, bringing view into sharp focus, and repeats this eight times for each eye as the lines appea...
