Super Pinhole Macula charts are used to determine potential acuity before cataract surgery.
This sloan Letters chart is for the Super Pinhole Macula Cabinet and has characters in a scrambled order for situations where repetitive testing are involved.
Proportionally spaced lines; line sizes range from 20/100 to 20/20 (6/30 to 6/6) equivalent. Chart measures 10″ x 10″ (25.4cm x 25.4cm)
Testing distance of 1.5m (5ft) for all Super Pinhole charts