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VOLUME 49 , ISSUE 3ENG ( June, 2021 ) > List of Articles

Determining a Suitable Compensation in LASIK Surgery for Hyperopic Patients Older than 45 Years

Gabriel Merchán-De Mendoza, María Victoria Baez

Keywords : LASIK, hypocorrection, hyperopia, accommodation, presbyopia. clinical emmetropia

Citation Information : Mendoza GM, Baez MV. Determining a Suitable Compensation in LASIK Surgery for Hyperopic Patients Older than 45 Years. 2021; 49 (3ENG):28-33.

DOI: 10.5005/hoe-10101-49304

Published Online: 15-08-2021

Copyright Statement:  Copyright © 2021; Jaypee Brothers Medical Publishers (P) Ltd.


Abstract

Objective: To determine an adequate compensation to achieve a refractive state of clinical emmetropia for hyperopic patients older than 45 years of age. Methods: A Proportional analysis was performed by comparing samples of cases that successfully achieved clinical emmetropia intervened with and without a compensation of +0.50 or +0.75 Dpts. for hyperopic patients older than 45 years of age at OPTILASER, Refractive Surgery Center in Bogotá, Colombia. Results: The result of the analysis with a Confidence Level of 95% is: Z Value = 4.35, Cumulative Probability = 0.9998 and p-Value = 0.0002, therefore, the Null Hypothesis Ho is rejected in favor of Ha which states that “hyperopic patients of 45 years of age and older, operated with compensation +0.50 or +0.75 Dpts., show a proportion of successes of clinical emmetropia significantly greater than those operated without any compensation.” Conclusions: For hyperopic patients of 45 years of age and older, it is recommended to introduce a compensation of +0.50 or +0.75 Dpts. over the patient's degree of hyperopia, into the LASIK prior to surgery, to significantly increase the probabilities of achieving a refractive state of clinical emmetropia. Clinical Importance: The compensation proposed in this investigation achieves in a large proportion of hyperopes a satisfactory state of clinical emmetropia in far vision, avoiding accommodative efforts in patients over 45 years of age with a low amplitude of accommodation.


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