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엑시머레이저각막절제술(PRK)과 레이저각막절삭가공성형술(LASIK) 후 자동굴절검사와 수동굴절검사의 차이 분석

Other Titles
 Difference of the Accuracy between Autorefraction and Subjective Refraction in Photorefractive Keratectomy(PRK) and LASIK-Treated Eyes 
 이재범  ;  이경섭  ;  이동호  ;  김응권 
 Journal of the Korean Ophthalmological Society (대한안과학회지), Vol.40(2) : 346-353, 1999 
Journal Title
 Journal of the Korean Ophthalmological Society (대한안과학회지) 
Issue Date
Automated refraction ; PRK ; LASIK ; Subjective refraction
Authors decided to test whether differences occurred in automated and subjective refraction in untreated, PRK, and LASIK-treated eyes. Ninety six eyes of 50 patients(96 eyes) who underwent PRK(57 eyes) or LASIK(39 eyes) for myopia and myopic astigmatism were routinely autorefracted with the CANON RK-3 before subjective refraction was done, using several parameters. This two procedures were done preoperation and 3 months after operation. In comparing the postoperative(PRK, LASIK) results, automated refraction showed more myopia and higher cylinder power, without significant difference in refractive axis, than those of subjective measurement. The difference of cylinder power were found in the cases of large ablation depth(above 100㎛), high degree of eccentric ablation(above 0.25 mm), LASIK operation. The significant differences of cylinder power and axis were found in the cases of high degree of eccentric ablation(above 0.25 mm). So we recommend the method of subjective refraction before PRK and LASIK operation instead of using automated refraction. Postoperatvely, we also should evaluate the postoperative status of the patient by subjective refraction. And we should decide the amount of ablation in case of retreatment by subjective refraction, instead of autorefraction. We have to be cautious of evaluating the automated refraction results after operation, especially in cases of large ablation depth, high degree of eccentric ablation, and LASIK.
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1. College of Medicine (의과대학) > Dept. of Ophthalmology (안과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Eung Kweon(김응권) ORCID logo https://orcid.org/0000-0002-1453-8042
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