Clinical ophthalmology (Auckland, N.Z.) · 2024
Validation of Clinical Protocol of Astigmatism Induction in Pseudophakic Patients.
СтатьяНазвание и аннотация: Перевод пока не подготовлен
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
De Melo Irineu Ribeiro, Hida Wilson Takashi, Moscovici Bernardo Kaplan, Vilar Cesar, Motta Antonio Francisco Pimenta, de Medeiros Andre Lins, Chaves Mario Augusto Pereira Dias, Lake Jonathan Clive, Nose Walton, Carricondo Pedro Carlos
Аннотация
PURPOSE: Validate a novel approach for assessing residual astigmatism's impact on visual acuity in pseudophakic patients using defocus curves and spherical equivalent compensation.
MATERIALS AND METHODS: Thirteen patients over 40 with cataracts and normal ophthalmological examinations were enrolled in a prospective, non-randomized cohort study. The defocus curve method was employed, wherein visual acuity was measured with spherical lenses ranging from -2.50 to +2.50 diopters in 0.5 diopter increments based on subjective refraction. Cylindrical lenses (+1, +2, and +3 diopters) were introduced at each spherical diopter's 90° and 180° axes. Curves' results were compared at each defocus point to assess the impact of astigmatism. The Kruskal-Wallis test was used to determine if astigmatism significantly affected visual acuity post-phacoemulsification surgery with intraocular lens implantation.
RESULTS: Significant p-values were observed only for defocus curve points of -0.5, 0, +0.5, and +1, indicating rejection of the hypothesis of no difference between the 90° and 180° groups at these points. Although statistical significance was not achieved, the against-the-rule (ATR) group was inclined toward improved near and intermediate visual acuity. In contrast, the with-the-rule (WTR) group tended to enhance distance visual acuity and myopic tolerance.
CONCLUSION: This novel methodology is both reproducible and valuable. It offers potential insight into residual astigmatism tolerance in pseudophakic patients. Its application may aid in surgical planning and intraocular lens decision-making.
MATERIALS AND METHODS: Thirteen patients over 40 with cataracts and normal ophthalmological examinations were enrolled in a prospective, non-randomized cohort study. The defocus curve method was employed, wherein visual acuity was measured with spherical lenses ranging from -2.50 to +2.50 diopters in 0.5 diopter increments based on subjective refraction. Cylindrical lenses (+1, +2, and +3 diopters) were introduced at each spherical diopter's 90° and 180° axes. Curves' results were compared at each defocus point to assess the impact of astigmatism. The Kruskal-Wallis test was used to determine if astigmatism significantly affected visual acuity post-phacoemulsification surgery with intraocular lens implantation.
RESULTS: Significant p-values were observed only for defocus curve points of -0.5, 0, +0.5, and +1, indicating rejection of the hypothesis of no difference between the 90° and 180° groups at these points. Although statistical significance was not achieved, the against-the-rule (ATR) group was inclined toward improved near and intermediate visual acuity. In contrast, the with-the-rule (WTR) group tended to enhance distance visual acuity and myopic tolerance.
CONCLUSION: This novel methodology is both reproducible and valuable. It offers potential insight into residual astigmatism tolerance in pseudophakic patients. Its application may aid in surgical planning and intraocular lens decision-making.