Corneal wavefront-guided photorefractive keratectomy with mitomycin-C for hyperopia after radial keratotomy: two-year follow-up.
J Cataract Refract Surg
; 38(4): 595-606, 2012 Apr.
Article
en En
| MEDLINE
| ID: mdl-22440434
ABSTRACT
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.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Complicaciones Posoperatorias
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Queratotomía Radial
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Mitomicina
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Queratectomía Fotorrefractiva
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Alquilantes
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Láseres de Excímeros
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Aberración de Frente de Onda Corneal
/
Hiperopía
Tipo de estudio:
Etiology_studies
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Observational_studies
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Prognostic_studies
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Risk_factors_studies
Límite:
Adult
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Aged
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Female
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Humans
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Male
/
Middle aged
Idioma:
En
Revista:
J Cataract Refract Surg
Asunto de la revista:
OFTALMOLOGIA
Año:
2012
Tipo del documento:
Article
País de afiliación:
Brasil