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The opthalmologist Gerald Westheimer, renowned for his research into the eye and how we see in 3D, concluded the Frisby Stereotest satisfies his critiera for optimal stimulus conditions for stereoacuity.

Easy to Use

Used in Clinics for 50 Years

No Glasses Required

For Babies From 6 Months

Eye Movements Observable

Invisible Viewed Monocularly

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Natural Vision Testing

The Frisby Stereotest is a random element, real depth object, viewed with natural vision.

It is easy to administer and requires no special glasses, allowing for preferential-looking outcomes.

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Renowned Opthalmologist Gerald Westheimer

Learn more about his conditions for optimum assessments of steropsis.

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What is Stereovision, and Why Test for It?

Detecting stereovision issues early is vital for treating vision problems like amblyopia and strabismus that can impact depth perception and overall visual health.

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Strabismus and Amblyopia

Frisby Stereotests often are used by orthoptists as the preferred stereotest in the UK to support the diagnostics and management of these conditions - from babies and toddlers, to school children and teens.

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Unique Features of the Frisby Stereotest

As well as being very easy to administer, unlike some stereotests, the Frisby allows checking for test understanding, and for repeat testing without the patient learning how to pass for the wrong reasons.

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Testing Babies and Young Children

The Frisby Stereotest makes assessing stereovision in babies and young children simple, with even preverbal children able to be assessed through pointing or natural preferential looking at the target.

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How Stereotests Plays a Part in Vision Therapy

Stereotests are essential tools in vision therapy, helping track progress, improve depth perception, and strengthen binocular vision through engaging, practical assessments.

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Stereopsis Assessment in Elderly Patients

Stereotests can help detect vision changes early, reducing fall risk, improving spatial awareness, and maintaining independence through better depth perception.

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Presented Correctly, the Frisby Gives No Monocular Clues

The Frisby Stereotest provides true binocular depth assessment when used correctly and avoids misleading monocular clues.

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Frisby Stereotests have been the chosen stereopsis screening and assessment test for ophthalmologists and orthoptists across the UK and Asia for over 50 years.

Orthorptists' Preferred Stereotest

Worldwide Shipping

European Medical Device (EU MDR) compliant

Organisations Using Frisby Stereotests

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