Frisby Stereotests are a simple diagnostic tool used to assess stereoscopic (3D) vision, a key function of binocular single vision. 

Stereotests play a crucial role in the assessment and management of stereovision disorders, particularly in children with conditions such as strabismus (eye misalignment) and amblyopia (also known as 'lazy eye', where one eye is unable to see fine depth detail despite optical correction). 

Designed for all ages, including very young children, they are easy to administer tests and use real-depth cues to measure stereoacuity. The tests come in near and a distance version, and are used in clinics, vision screenings, and research settings worldwide. 

With no need for special viewing equipment, they are especially effective for assessing children and the elderly and they support timely referrals for vision therapy or specialist care.

Frisby Stereotest

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