PHOTOREFRACTIVE KERATECTOMY FOR MYOPIA; AN 8-YEAR FOLLOW UP STUDY

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SHOJAEE A.; MOHAMMAD RABI H.; ASLANI M.; NOURIZADEH F.; ELAHI B.; RAFAATI M.; KHOUEI S.H.

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Journal: BINA Year:2007 | Volume:12 | Issue:4 (49) Page(s): 458-466

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Title

PHOTOREFRACTIVE KERATECTOMY FOR MYOPIA; AN 8-YEAR FOLLOW UP STUDY

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Abstract

Purpose: To evaluate the 8-year results of excimer laser photorefractive keratectomy (PRK) for myopia in terms of safety, stability and late complications.Methods: Of 203 myopic patients who underwent PRK with single-step method using NIDEK EC- 5000 excimer laser with 5-6 mm ablation zones at Basir Eye Center, Tehran-Iran from 1996 to 1998, 179 eyes of 98 patients who completed 8 years of follow up were included in this study. Results of follow up examinations at 1, 3, 6 and 12 months and 2 and 8 years after surgery were analyzed. Treated eyes were divided into three groups according to preoperative refractive error: low (£ -6.00 diopter [D]), medium (-6.10 to -10.00 D) and high (> -10.00 D) myopes.Results: Eight years after PRK, emmetropia (within±1 D) was achieved in 69.1%,30% and 46.15% of the low, medium and high myopia groups, respectively. Although a small myopic shift occurred up to 8 years after surgery, myopic regression stabilized in all groups within 24 months and was correlated significantly to preoperative spherical equivalent refraction. Corneal haze occurred in 5% especially in medium and high myopic groups but cleared within two years in 89% of cases. Only one eye lost two lines of best spectacle-corrected visual acuity due to corneal haze.Conclusion: According to this study, postoperative refraction remains stable two years after PRK and most cases of corneal haze clear within two years after surgery. Therefore, PRK seems to be a safe and stable surgical procedure in myopic patients.

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APA: Copy

SHOJAEE, A., MOHAMMAD RABI, H., ASLANI, M., NOURIZADEH, F., ELAHI, B., RAFAATI, M., & KHOUEI, S.H.. (2007). PHOTOREFRACTIVE KERATECTOMY FOR MYOPIA; AN 8-YEAR FOLLOW UP STUDY. BINA, 12(4 (49)), 458-466. SID. https://sid.ir/paper/43057/en

Vancouver: Copy

SHOJAEE A., MOHAMMAD RABI H., ASLANI M., NOURIZADEH F., ELAHI B., RAFAATI M., KHOUEI S.H.. PHOTOREFRACTIVE KERATECTOMY FOR MYOPIA; AN 8-YEAR FOLLOW UP STUDY. BINA[Internet]. 2007;12(4 (49)):458-466. Available from: https://sid.ir/paper/43057/en

IEEE: Copy

A. SHOJAEE, H. MOHAMMAD RABI, M. ASLANI, F. NOURIZADEH, B. ELAHI, M. RAFAATI, and S.H. KHOUEI, “PHOTOREFRACTIVE KERATECTOMY FOR MYOPIA; AN 8-YEAR FOLLOW UP STUDY,” BINA, vol. 12, no. 4 (49), pp. 458–466, 2007, [Online]. Available: https://sid.ir/paper/43057/en

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