Alaska Blind Child Discovery
Amblyopia Detection by Acuity Tests
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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
Amblyopia
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Importance of Patched Acuity Test:
