Depth Perception Test

 

Depth perception is your brain’s ability to judge the distance and three-dimensional relationship of objects in space. It relies on both binocular (two eyes working together) and monocular (one eye) visual cues.

The Stereo Fly Test, also known as the Titmus Fly Test, is a clinical tool used by optometrists and ophthalmologists to evaluate 3D vision. 

It uses polarized images and polarized glasses to create the illusion of depth.

                                Polarised Images And Polarised Glasses To Evaluate Depth

                                                            3D Testing In Medicine 

Large Fly Image (Main Test)

• The fly’s wings appear to "pop out" or float in space.

• The patient is asked to "pinch the fly’s wings" in mid-air.

• A positive response suggests gross stereopsis (around 3,000 arc seconds of depth perception).

👁️ Failure to see 3D images suggests poor or absent binocular vision and may warrant further testing.

                              

                                                                                Snapshot