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David G Hunter; Detecting fixation accuracy/stability using retinal birefringence scanning. Invest. Ophthalmol. Vis. Sci. 201657(12):.
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© ARVO (1962-2015); The Authors (2016-present)
Presentation Description :
Foveal fixation can be detected objectively with high precision using retinal birefringence scanning (RBS). Binocular alignment can be assessed with similar speed and accuracy using binocular RBS, which generates a binocularity score of 0-100% after a 2.5 – 5 second bilateral scan. When strabismus is present, the binocularity score is typically 0-20%. Patients with amblyopia unexpectely have equally low binocularity scores - even when there is no measurable strabismus on cover testing. We will present evidence (from our work and that of others) that the reduced binocularity score in amblyopic patients is the result of fixation instability that develops in the amblyopic eye, and possibly the fellow eye as well, and that stability is restored with successful amblyopia therapy.
This is an abstract that was submitted for the 2016 ARVO Annual Meeting, held in Seattle, Wash., May 1-5, 2016.
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