Undercorrection after excimer laser refractive surgery. Excimer Laser Group

American Journal of Ophthalmology
Rasik B VajpayeeH R Taylor

Abstract

The incidence and correlations of undercorrection were studied for 1 year after excimer laser surgery for myopia or myuopic astigmatism. A consecutive series of 645 eyes of 440 patients were studied. Eyes were examined preoperatively and at 1, 3, 6, and 12 months after surgery. The parameters evaluated were visual acuity, refraction, and corneal clarity. Following excimer laser surgery, undercorrection of > or = -1.00 diopters gradually increased from 10% at 1 month to 40% at 12 months. Increasing degree of preoperative myopia was significantly associated with increasing occurrence of undercorrection at 3 months (chi 2 = 17.3, P < .001), 6 months (chi 2 = 53.6, P < .001), and 12 months (chi 2 = 64.8, P < .001). Undercorrection was more common in eyes that had had photorefractive keratectomy than in those that had had photoastigmatic refractive keratectomy (odds ratio, 0.40; 95% confidence interval, 0.25 to 0.60). At 1 year, a loss of 2 or more lines of best-corrected visual acuity was recorded in 38% of undercorrected patients. Loss of 2 or more lines of best-corrected visual acuity was more common in patients undercorrected by -1.00 diopter or more (odds ratio, 8.8; 95% confidence interval, 5.4 to 14.6). No relationship was se...Continue Reading

References

Jan 1, 1988·Journal of Cataract and Refractive Surgery·C R MunnerlynJ Marshall
Mar 1, 1994·Journal of Cataract and Refractive Surgery·H R TaylorN Alpins

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Citations

Apr 30, 2002·Journal of Cataract and Refractive Surgery·Ian F ComaishGerard L Sutton
Jan 26, 2000·Journal of Cataract and Refractive Surgery·J L FebbraroM H Friedlander
Jul 15, 1998·Ophthalmology·P Rozsíval, A Feuermannová
Mar 20, 2010·Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Für Klinische Und Experimentelle Ophthalmologie·Junko KoshimizuTatsuo Yamaguchi
Apr 28, 2009·Journal of Cataract and Refractive Surgery·Eng K AngPaul N Baird
Feb 18, 2004·Journal of Cataract and Refractive Surgery·Mahmood JabbarvandAli Amini
Sep 28, 2010·Journal of Cataract and Refractive Surgery·Mohamed DiraniPaul N Baird
Oct 13, 1998·Journal of Cataract and Refractive Surgery·A OzdamarR Aktunç
Jan 10, 1998·Journal of Cataract and Refractive Surgery·A VogelR Birngruber

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