VAC STEREO BUTTERFLY WITH LEA

Designed to rapidly test for amblyopia & strabismus using gross thru fine stereopsis

(4800 to 20 sec of arc)

• GRADED CIRCLE TEST FROM 400 SECDOWN TO 20 SEC 
• NEW TECHNOLOGY → NO MONOCULAR CLUES
• NEW IMPROVED BOOKLETS
• ANSWER KEY ON BACK COVER
• INCLUDES ADULT & PEDIATRIC POLARIZED VIEWERS