Excimer laser refractive surgery : corneal wound ... - Helda - Helsinki.fi

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Table 8 Efficacy postoperative values after PRK (VISX and Nidek) and LASIK (VISX) Safety PRK LASIK UCVA ≤0.0 29% 57% UCVA ≤0.5 100% 100% MRSE ±0.50 D 57% 80% MRSE ±1.00 D 80% 87% In terms of loss of lines of BCVA at the end of the follow-up nine and three % of the eyes after PRK and LASIK respectively lost two or more lines of BCVA. Comparative analysis at 12 months showed a higher incidence of eyes that gained one or more lines of BCVA after LASIK (66%) than after PRK (23%). Twenty-three and 10% of eyes lost one or more lines of BCVA after PRK and LASIK respectively. Comparison of postoperative outcomes of MRSE between PRK and LASIK at six and twelve months was not statistically significant (p>0.05). No eye in either group showed an increase in astigmatism >2.0 D compared to preoperative values. Table 9 Safety non-vector postoperative values after PRK and LASIK for correction of moderateto-high astigmatism BCVA ≤0.0 loss of 2 or more lines of BCVA PRK VISX LASIK VISX 81% 48 89% 11% 3%
Stability PRK Mean MRSE at six months after PRK, was 0.2 ± 1.1 D (range 3.0 ― -5.0) and at twelve months it was 0.1 ± 1.4 D (range 3.0 ― -6.0). Stability analysis showed that between six and twelve months, 14% of eyes showed no changes in MRSE after PRK. A change less than 0.5 D was found in 66% of eyes, and a change >1.0 D was found in 14% of eyes after PRK. LASIK After LASIK, mean MRSE at six months was -0.3 ± 0.8 D (range 1.25 ― -2.5) and at twelve months MRSE was -0.5 ± 0.8 D (range 1 ― -2.5). Stability analysis showed that between six and twelve months, 13% of eyes showed no changes in MRSE after LASIK. A change less than 0.5 D was found in 83% of eyes after LASIK, all eyes were less than 1.0 D of change after LASIK. PRK vs. LASIK Comparison of postoperative outcomes of MRSE and defocus between PRK and LASIK at six and twelve months were not statistically significant (p>0.05). 5.2.1.2 Vector analysis Vector analysis was performed at the corneal plane. The mean intended refractive correction (IRC) was 2.4±0.5 and 2.4±0.4 D for PRK and LASIK respectively (Fig. 2). 49
Page 1 and 2: Department of Ophthalmology Univers
Page 3 and 4: “When you want something, all the
Page 5 and 6: 3 AIMS OF THE STUDY 35 4 PATIENTS A
Page 7 and 8: STUDY V. PRK enhancement 58 7 SUMMA
Page 9 and 10: ABBREVIATIONS ArF Argon Fluoride AS
Page 11 and 12: ABSTRACT Although the first procedu
Page 13 and 14: 1 INTRODUCTION Refractive errors ha
Page 15 and 16: from anterior to posterior by the e
Page 17 and 18: et al. 1991, Gallar et al. 1993, Ta
Page 19 and 20: 2.3.2 Interaction of excimer laser
Page 21 and 22: at that time an extracorporeal trea
Page 23 and 24: Twelve to 24 hours after the onset
Page 25 and 26: 2.5 PREOPERATIVE ASSESSMENT OF REFR
Page 27 and 28: 2009, Stephenson et al. 1998) have
Page 29 and 30: 2.6.2 LASIK outcomes Although LASIK
Page 31 and 32: 2.7 PRK AND LASIK COMPLICATIONS Exc
Page 33 and 34: Dry eye Dry eye is one of the most
Page 35 and 36: 3 AIMS OF THE STUDY The general pur
Page 37 and 38: 4.2 PROTOCOLS The patients included
Page 39 and 40: 4.3.7 Study subjects 4.3.7.1 Study
Page 41 and 42: with the post hoc Dunn multiple com
Page 43 and 44: LASIK UCVA ≤0.0 was achieved post
Page 45 and 46: Table 6 Safety postoperative values
Page 47: 5.2 STUDIES III AND IV. Regular and
Page 51 and 52: 4 3 2 1 0 1 2 3 4 Normalized Error
Page 53 and 54: Safety Nine eyes out of eleven gain
Page 55 and 56: ±1.00 D of the intended correction
Page 57 and 58: a tendency to overcorrection in MRS
Page 59 and 60: 7 SUMMARY AND CONCLUSIONS The prese
Page 61 and 62: I am grateful to Ms. Elina Haapanie
Page 63 and 64: Azar DT and Farah SG (1998): Laser
Page 65 and 66: Donnenfeld ED, Ehrenhaus M, Solomon
Page 67 and 68: Hay ED (1979): Development of the v
Page 69 and 70: Kornmehl EW, Steinert RF and Puliaf
Page 71 and 72: McDonald MB, Kaufman HE, Frantz JM,
Page 73 and 74: Pallikaris IG, Kymionis GD, Panagop
Page 75 and 76: Sakimoto T, Rosenblatt MI and Azar
Page 77 and 78: Toda I, Asano-Kato N, Komai-Hori Y
Page 79: ORIGINAL PUBLICATIONS 79

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