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Interactive computer program improves BCVA in patients with unilateral amblyopia

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ATLANTA — A computer-based treatment improved best corrected visual acuity and contrast sensitivity in patients older than 10 years with unilateral amblyopia, according to study results presented here.

"There is a skeptical viewpoint regarding the ability to improve the amblyopic eye from a certain age, which is usually about 9 years. I, as well, was very skeptical," Henia Lichter, MD, said at the American Academy of Ophthalmology meeting.

Researchers used the NeuroVision program (NeuroVision), an Internet-based interactive program that is personalized to meet individual patients' needs, Dr. Lichter said.

The patient sits 1.5 m from the computer screen. A Gabor patch is used to cover the non-amblyopic eye. Tasks performed with the program are designed to stimulate the primary visual cortex, Dr. Lichter said.

The study included 26 eyes of 26 patients who had a mean age of 28 years (range, 10 years to 55 years) and unilateral amblyopia due to anisometropia, strabismus or both. BCVA ranged from 20/30 to 20/100 before treatment.

BCVA improved in 25 patients (96%). Mean BCVA improved from 20/80 to 20/40. A mean gain of 1.9 Snellen lines was statistically significant, Dr. Lichter said.