SLOAN ETDRS Intermediate Vision Chart 67cm

Intermediate at 67cm Testing Distances.

Intermediate Vision Testing at 67cm:  13.4M (20/400) to .34M (20/10)

Memorization can alter testing results and create an inaccurate record for the patient. This near vision chart features multiple groups for repetitive testing help minimize memorization. This helps to create a more accurate and reliable vision chart that yields repeatable results.

Each side is different to minimize memorization.