[Correction factor for individuals with accommodative capacity based on automated refractor].

Abstract:

PURPOSE:To determine a correction factor for refractive errors evaluated without cycloplegy effect. METHODS:A study was made with 623 patients (1,246 eyes) of both sexes, aging between 3 and 40 years old. The dynamic and static refractometries were obtained using the automated refractor Shin-Nippon Accuref-K 9001. 1% Cyclopentolate was dropped and the static refractometry was performed in 30 minutes. Data were analyzed using the linear regression model and the multiple regression model of the diopter values with and without cycloplegy effect according to age. RESULTS:The correlation between the astigmatism diopter values with and without cicloplegy ranged from 81.52% to 92.27%. Analyzing the spherical diopter values, the correlation was lower (53.57% to 87.78%). The astigmatism axis also revealed low correlation values (28.86% to 58.80%). The multiple regression model according to age demonstrated multiple determination coefficient with high values for myopia (86.38%) and astigmatism (79.79%). The lowest multiple determination coefficient was observed for astigmatism axis (17.70%). CONCLUSION:It was possible to demonstrate a high correlation in refractive errors with and without cycloplegy effect on the cylindrical ametropies. Mathematical formules, for cylindrical and spherical ametropies, were presented as a correction factor for refraction of the patients not submitted to cycloplegy.

journal_name

Arq Bras Oftalmol

authors

Takahagi RU,Lavagnoli A,Fernandes TM,Schelinni SA,Padovani CR

doi

10.1590/s0004-27492009000600009

subject

Has Abstract

pub_date

2009-11-01 00:00:00

pages

789-92

issue

6

eissn

0004-2749

issn

1678-2925

pii

S0004-27492009000600009

journal_volume

72

pub_type

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