TY - JOUR
T1 - Corneal wavefront-guided photorefractive keratectomy with mitomycin-C for hyperopia after radial keratotomy
T2 - Two-year follow-up
AU - Ghanem, Ramon C.
AU - Ghanem, Vinícius C.
AU - Ghanem, Emir A.
AU - Kara-José, Newton
PY - 2012/4
Y1 - 2012/4
N2 - Purpose: To assess corneal wavefront-guided photorefractive keratectomy (PRK) to correct hyperopia after radial keratotomy (RK). Setting: Sadalla Amin Ghanem Eye Hospital, Joinville, Santa Catarina, Brazil. Design: Case series. Methods: Excimer laser corneal wavefront-guided PRK with intraoperative mitomycin-C (MMC) 0.02% was performed. Main outcome measures were uncorrected (UDVA) and corrected (CDVA) distance visual acuities, spherical equivalent (SE), corneal aberrations, and haze. Results: The mean time between RK and PRK in the 61 eyes (39 patients) was 18.8 years ± 3.8 (SD). Before PRK, the mean SE was +4.17 ± 1.97 diopters (D); the mean astigmatism, -1.39 ± 1.04 D; and the mean CDVA, 0.161 ± 0.137 logMAR. At 24 months, the mean values were 0.14 ± 0.99 D (P<.001), -1.19 ± 1.02 D (P=.627), and 0.072 ± 0.094 logMAR (P<.001), respectively; the mean UDVA was 0.265 ± 0.196 (P<.001). The UDVA was 20/25 or better in 37.7% of eyes and 20/40 or better in 68.9%. The CDVA improved by 1 or more lines in 62.3% of eyes. Two eyes (3.3%) lost 2 or more lines, 1 due to corneal ectasia. Thirty eyes (49.2%) were within ±0.50 D of intended SE and 45 (73.8%) were within ±1.00 D. From 6 to 24 months, the mean SE regression was +0.39 D (P<.05). A significant decrease in coma, trefoil, and spherical aberration occurred. Three eyes developed peripheral haze more than grade 1. Conclusion: Corneal wavefront-guided PRK with MMC for hyperopia after RK significantly improved UDVA, CDVA, and higher-order corneal aberrations with a low incidence of visually significant corneal haze. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned.
AB - Purpose: To assess corneal wavefront-guided photorefractive keratectomy (PRK) to correct hyperopia after radial keratotomy (RK). Setting: Sadalla Amin Ghanem Eye Hospital, Joinville, Santa Catarina, Brazil. Design: Case series. Methods: Excimer laser corneal wavefront-guided PRK with intraoperative mitomycin-C (MMC) 0.02% was performed. Main outcome measures were uncorrected (UDVA) and corrected (CDVA) distance visual acuities, spherical equivalent (SE), corneal aberrations, and haze. Results: The mean time between RK and PRK in the 61 eyes (39 patients) was 18.8 years ± 3.8 (SD). Before PRK, the mean SE was +4.17 ± 1.97 diopters (D); the mean astigmatism, -1.39 ± 1.04 D; and the mean CDVA, 0.161 ± 0.137 logMAR. At 24 months, the mean values were 0.14 ± 0.99 D (P<.001), -1.19 ± 1.02 D (P=.627), and 0.072 ± 0.094 logMAR (P<.001), respectively; the mean UDVA was 0.265 ± 0.196 (P<.001). The UDVA was 20/25 or better in 37.7% of eyes and 20/40 or better in 68.9%. The CDVA improved by 1 or more lines in 62.3% of eyes. Two eyes (3.3%) lost 2 or more lines, 1 due to corneal ectasia. Thirty eyes (49.2%) were within ±0.50 D of intended SE and 45 (73.8%) were within ±1.00 D. From 6 to 24 months, the mean SE regression was +0.39 D (P<.05). A significant decrease in coma, trefoil, and spherical aberration occurred. Three eyes developed peripheral haze more than grade 1. Conclusion: Corneal wavefront-guided PRK with MMC for hyperopia after RK significantly improved UDVA, CDVA, and higher-order corneal aberrations with a low incidence of visually significant corneal haze. Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned.
UR - http://www.scopus.com/inward/record.url?scp=84858812952&partnerID=8YFLogxK
U2 - 10.1016/j.jcrs.2011.11.032
DO - 10.1016/j.jcrs.2011.11.032
M3 - Artículo
SN - 0886-3350
VL - 38
SP - 595
EP - 606
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
IS - 4
ER -