A New Methodology for Evaluating the Potential Impact of Residual Refractive Astigmatism in Pseudophakic Patients

Abstract

Wilson Takashi Hida,1,2 Cesar Vilar,1,3 Bernardo Kaplan Moscovici,4,5 Antonio Francisco Pimenta Motta,3 Pedro Carlos Carricondo2 1Department of Ophthalmology, Hospital Oftalmológico de Brasília HOB, Brasilia, DF, Brazil; 2Department of Ophthalmology, University of Sao Paulo(USP), Rio de Janeiro, RJ, Brazil; 3Department of Ophthalmology, Renato Ambrosio Research Center CEORA, Rio de Janeiro, RJ, Brazil; 4Department of Ophthalmology and Visual Sciences, Federal University of São Paulo (UNIFESP), São Paulo, SP, Brazil; 5Department of Ophthalmology, Hospital Visão Laser, Santos, SP, BrazilCorrespondence: Wilson Takashi Hida, S GAS II St. de Grandes Áreas Sul 607 - Asa Sul, Brasília, DF, 70200-670, Brazil, Tel + 55 61 3686-4586, Email [email protected]: To validate a new methodology to evaluate the impact of astigmatism in pseudophakia using an astigmatic defocus curve.Setting: Hospital Oftalmológico de Brasilia, Brazil.Design: Non-randomized cohort study.Methods: For every point of the defocus curve, from − 2.00 to +3.00 with 0.50D intervals, visual acuity was assessed with optically induced astigmatism (0.50D, 1.00D and 1.50D at 90 and 180 degrees) in pseudophakic patients implanted with a refractive-enhanced intraocular lens.Results: Twelve patients were analyzed. A statistically significant difference was found between the 90° (ATR) and 180°(WTR) axis with 1.50D astigmatism, providing better visual acuity in ATR astigmatism (p < 0.05).Conclusion: This new methodology is reproducible, useful and may predict residual astigmatism tolerance in pseudophakic patients, which may help with surgery planning and IOL decision-making.Keywords: cataract, surgery, phacoemulsification, optics, residual astigmatism, visual performance

Keywords

• cataract
• surgery
• phacoemulsification
• optics
• residual astigmatism
• visual performance