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Two 'Friend' binocular vision test sets.

Two 'Friend' binocular vision test sets.
2 9 c m
40cm
actual image size: 32cm x 21cm

Description

These are designed to test for any imbalance in binocular vision, such as a 'lazy eye', or a strabismus, or squint.

Image Details

Image Ref.
 
10287582

© Science Museum / Science & Society Picture Library

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