Abstract
We measured refraction using a newly developed simultaneous binocular autorefraction device (BV-1000, Topcon) and compared the measurements with those obtained using a conventional monocular autorefractometer (KR-8100A, Topcon). Children with ametropic amblyopia without strabismus (15 patients, 30 eyes, 5.6±1.6 years old), anisometropic amblyopia (10 patients, 20 eyes, 7.6±3.3 years old), without amblyopia (20 patients, 40 eyes, 7.4±3.6 years old) and adults (10 patients, 20 eyes, 34.6±7.8 years old) were evaluated. Objective refraction before and after instillation of 1% cyclopentolate was measured using the two devices. In each group with and without amblyopia, the difference between pre- and post-cycloplegic refractive values was significantly smaller in BV-1000 measurement than in KR-8100A measurement. In anisometropic amblyopia, regarding the disparity between fellow eyes, the differences between pre- and post-cycloplegic measurements varied less in BV-1000 measurement than in KR-8100A measurement. Use of the BV-1000, enables accurate measurement of anisometropia without cycloplegia.
