This Refractor Test Card is printed on both sides with four Snellen & Jaeger letter groups. The OS-3590 Refractor Test Card is designed to be cliped to a refractor or phoroptor Card Holder
/ Reading Rod
mechanism for near point acuity testing. This Snellen & Jaeger / 4-Letter Group Refractor Test Card measures 4.5" x 5.25" and is printed on heavy matte white card. Also available laminated in plastic (OS-3590L).