Comparison of the visual acuity after photorefractive keratectomy using Early Treatment Diabetic Retinopathy Study Chart and E-chart

Ghorbanhosseini, S. and Hashemi, H. and Jafarzadehpur, E. and Yekta, A. and Khabazkhoob, M. (2016) Comparison of the visual acuity after photorefractive keratectomy using Early Treatment Diabetic Retinopathy Study Chart and E-chart. Journal of Current Ophthalmology, 28 (4). pp. 188-193.

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Abstract

Purpose To compare the visual responses of post refractive surgery's patients using Early Treatment Diabetic Retinopathy Study Chart (ETDRS) and E-chart with and without color filters. Methods The uncorrected Logarithm of the Minimum Angle of Resolution Visual Acuity (LogMAR VA) of 70 patients with a mean age of 26.2 ± 3.76 years (from 19 to 34 years) who had undergone Photorefractive Keratectomy (PRK) (the range of post operation refractive error: ±0.5 D) was measured under the light conditions of with and without asymmetrical glare by using red, green, and yellow filters and ETDRS chart and E-chart. Results In both light conditions of with and without glare, the mean visual acuity of the three filters in the right and left eyes was significantly better with the E-chart versus the ETDRS chart (P < 0.0001). Only in the glare light condition, the mean visual acuity of the left eye showed no significant difference between the two charts using the red filter (P = 0.30). Conclusions Visual acuity measurements were different with ETDRS chart and E-chart. These two charts cannot be used interchangeably. © 2016 Iranian Society of Ophthalmology

Item Type: Article
Additional Information: Export Date: 16 February 2020 Correspondence Address: Jafarzadehpur, E.; Noor Research Center for Ophthalmic Epidemiology, Noor Eye HospitalIran; email: jafarzadehpour.e@iums.ac.ir
Uncontrolled Keywords: Colored filters Glare Refractive surgery Visual acuity charts adult Article comparative study controlled study E chart Early Treatment Diabetic Retinopathy Study Chart female human major clinical study male photorefractive keratectomy photostimulation refraction error treatment outcome visual acuity visual acuity chart visual evoked potential
Subjects: WW Ophthalmology
Divisions: Mashhad University of Medical Sciences
Depositing User: mr lib4 lib4
Date Deposited: 02 Mar 2020 07:44
Last Modified: 02 Mar 2020 07:44
URI: http://eprints.mums.ac.ir/id/eprint/13006

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