Wavefront analyi of an eye with monocular triplopia and nuclear cataract

Purpoe To determine whether higher-order aberration explain patient-reported monocular triplopia. Deign Obervational cae report. Method A patient complaining of monocular triplopia wa examined with a Hartmann-hack aberrometer to determine whether higher-order wavefront aberration could account for the triplopia. The patient had a mild nuclear cataract; meaurement were made before and after lenectomy. The retinal image wa imulated uing the Zernike polynomial. Reult pherical aberration (−0.18 μm, 4 mm pupil) and trefoil aberration (−0.16 μm) were increaed. The imulated retinal image had a triple configuration imilar to the ubjective image reported by the patient. After cataract urgery, the ubjective triplopia diappeared; pherical, and trefoil aberration were markedly decreaed. Concluion The monocular triplopia probably temmed from combined effect of pherical and trefoil aberration caued by the nuclear cataract.