LEA Butterfly with LEA Symbols
Art.nr L101050 HMS nr:Stereopsis test combining both butterfly and LEA Symbols designed to rapidly test for amblyopia & strabismus using gross thru fine stereopsis (2500 to 20 sec of arc).
Graded circle test from 800 sec now down to 20 sec
No monocular clues
New improved booklets
Answer key on back cover
Includes polarized viewers
No monocular clues
New improved booklets
Answer key on back cover
Includes polarized viewers
