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The Brock Technique is a comprehensive diagnosis and therapy program for strabismus (“crossed eyes”) that can be implemented at any developmental level where a patient demonstrates fusion (where both eyes work together). Related items Light Box Transparency Viewer Brock Technique Transparency Set The Brock Technique of Strabismus Therapy

A cheiroscope is used in the treatment of strabismus (“lazy eye”). It incorporates a drawing exercise that is conducted at a subjective angle, which reveals if the patient is using the dominant eye to fixate on the image, and thus suppressing the non-dominant (“lazy”) eye. Related items Optional Cheiroscopic Viewer Attachment The Combined Franzblau Multisensory...

Color blindness is an inherited condition most commonly seen in men and with the colors red and green. It is caused by a deficiency of certain “cones”, or color detectors, in the eye. Although there is no cure, this condition does not significantly impact most day to day vision functions. Related items Rapid Screening Tests...

Convergence is the inward movement of eyes toward each other. Related items AN Training Series Delta Base-Out Training Unit Van Orden Graph Training Charts (base in) Van Orden Graph Training Charts (base out)

The Delacato Stereo Reading Program trains an individual to read with both eyes, strengthening figure-ground perception and establishing proper visual-motor function without intra-personal clues. Related items Stereo Reader Delacato Exercise/Reading Cards Delacato Test Summary Sheets

Depth perception – or stereopsis – is how a person judges how far away an object is from him/her, combining such factors as the apparent size of the object, its apparent rate of motion, the object’s height in the field of vision, the image’s clarity and various shadows. Related items Van Orden Graph Training Charts...

Diplopia is commonly known as “double vision,” when a person sees two images of an object instead of one. Binocular diplopia – double vision in both eyes – is caused by a misalignment of the eyes and is often treated with vision therapy. Monocular diplopia – double vision in only one eye – can be...

Esophoria – commonly referred to as “being cross-eyed” or underconvergence – occurs when the two eyes do not aim simultaneously at the same object and instead point in different directions – in this case inward. Esophoria impacts binocular vision – the ability of both eyes to work together – and depth perception. Related items Transparent...

Exophoria – commonly referred to as “being wall-eyed” or Overconvergence – occurs when the two eyes do not aim simultaneously at the same object and instead point in different directions – in this case outward. Esophoria impacts binocular vision – the ability of both eyes to work together – and depth perception. Related items Closed...

The Farnsworth-Munsell 100 Hue Test gauges color discrimination among 100 different colors and screens for color blindness.