Document Detail


Effect of age on the refractive outcome of myopic photorefractive keratectomy.
MedLine Citation:
PMID:  10771227     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To evaluate the effect of age on the outcome of myopic photorefractive keratectomy (PRK). SETTING: University-based refractive surgery practice. METHODS: A retrospective analysis of 197 eyes that had PRK for myopia was performed. Four groups of patients were compared: Group 1, patients < 30 years (n=35); Group 2, patients 31 to 40 years (n=56); Group 3, patients 41 to 50 year s (n=47); Group 4, patients > 50 years (n=59). The percentage of eyes with an uncorrected visual acuity of 20/20 or better and 20/40 or better and the percentage of eyes with spherical correction within +/-0.5 and +/-1.0 diopter (D) of the attempted correction were derived for each age group. The percentage of patients overcorrected and undercorrected by 1.0 D or more in each age group was also calculated. The difference between the percentage of patients who achieved a visual acuity of 20/20 or better in Group 4 and in the younger groups was statistically significant at 3 months (P =.02) but not at 6 months (P =.70) and 12 months (P =.55). The difference between the percentage of patients who achieved an acuity of 20/40 or better was not significant at any time. The difference between the percentage of patients who were within +/-0.5 D of intended correction in Group 4 and in the younger groups was statistically significant at 3 months (P =.001), 6 months (P =.006), and 12 months (P =.008); the difference between the percentage of patients who were within +/-1.0 D of intended correction was not significant at any time. The difference between the percentage of patients overcorrected and undercorrected by 1.0 D or more in Group 4 and in the younger groups was not significant at any time. In the 3 younger groups, age did not significantly affect visual outcome or predictability. However, there was a significant difference between Group 4 and the 3 younger groups in predictability of the refractive outcome at 3, 6, and 12 months. Age may play a role in the outcome of refractive surgery.
Authors:
S N Rao; R S Chuck; A H Chang; L LaBree; P J McDonnell
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Journal of cataract and refractive surgery     Volume:  26     ISSN:  0886-3350     ISO Abbreviation:  J Cataract Refract Surg     Publication Date:  2000 Apr 
Date Detail:
Created Date:  2000-05-12     Completed Date:  2000-05-12     Revised Date:  2009-11-03    
Medline Journal Info:
Nlm Unique ID:  8604171     Medline TA:  J Cataract Refract Surg     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  543-6     Citation Subset:  IM    
Affiliation:
Doheny Eye Institute and the Department of Ophthalmology, University of Southern California School of Medicine, Los Angeles, CA, USA.
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MeSH Terms
Descriptor/Qualifier:
Adolescent
Adult
Age Factors
Child
Child, Preschool
Cornea / physiopathology,  surgery*
Humans
Lasers, Excimer
Middle Aged
Myopia / physiopathology,  surgery*
Photorefractive Keratectomy*
Refraction, Ocular / physiology
Retrospective Studies
Treatment Outcome
Visual Acuity* / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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