Before revision: Second row from the bottom - 7 mm (V = 1.0) Bottom row - 3.5 mm (V = 2.0) Black/white pattern identification at 1 arcminute angle is considered to be visual acuity of 1.0.
After revision: Bottom third row - 7 mm (V = 1.0) Bottom row - 3.5 mm (V = 2.0) Black/white pattern identification at 1 arcminute angle is considered to be visual acuity of 1.0.