These plastic, colour-coded flipper lenses are available in ﬁve standard sizes and used for the diagnosis and treatment of accommodative defects. They comprise binocular spherical plus/minus lenses that can quickly be flipped from plus to minus during testing.
±0.50 DS, ±1.00 DS, ±1.50 DS, ±2.00 DS, +2.00/-4.00 DS, ±3.00 DS
The +/-2.00 DS is used to measure accommodative flexibility during a timed reading check. The other lenses are used to treat the condition by practising with a small sphere and increasing the lens strength used.
+/- 3.00 DS flippers are useful in orthoptic practise for diagnostic tests and measurements.
Please note that other sizes may be available upon request.