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Alaska Blind Child Discovery

A cooperative, charitable research project to vision screen every preschool Alaskan

Amblyopia Detection by Acuity Tests


Internet Acuity Test-LAPSED


Amblyopia is the main disease we seek to detect with pediatric vision screening. Detecting simple refractive errors such as myopia and astigmatism is a secondary goal of vision screening, particularly in school-aged children. Amblyopia is less-than-normal brain vision and therefore is one cause of decreased central acuity.

Acuity tests have long been the mainstay of childhood vision screening. When a child is old enough to cooperate, visual acuity is determined by the smallest subtended angle of a figure, letter or image (optotype) that can correctly be identified most of the time. In the past, Tumbling E or adult Snellen (Sloan) charts were used. Some validated contemporary pediatric Acuity tests are LEA™ Figures and HOTV letters. ABCD has developed a bilaterally symmetric, Surrounded Enhancement called HOTVAX requiring only 2 of three guesses to confirm the passing line.

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Kids Eye Disorders
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HOTVAX Powerpoint:
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Importance of Patched Acuity Test:

Acuity Test Issues
Internet ""
Precision Vision
Vision Assessment
Home Acuity Test Download
HOTVAX Rapid Acuity
Home Acuity Monitor Kit
Amblyopia Foundation of America Computer HOTV
Vision Quest 20/20™


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