Intrastromal femtosecond laser presbyopia correction: 1-year results of a multicenter study.
J Refract Surg
; 28(3): 182-8, 2012 Mar.
Article
em En
| MEDLINE
| ID: mdl-22373032
ABSTRACT
PURPOSE:
To investigate functional outcomes of the INTRACOR femtosecond laser-based intrastromal procedure to treat presbyopia.METHODS:
Sixty-three eyes from 63 presbyopic patients (median age 54 years) with mild hyperopia were enrolled in this prospective, ethics committee-approved, multi-center, nonrandomized clinical trial. The INTRACOR procedure was performed using the Technolas femtosecond laser (Technolas Perfect Vision GmbH) in the nondominant eye. Postoperatively, follow-up was performed at 1 day, 1 week, and 1, 3, 6, and 12 months and included near and distance visual acuity tests, slit-lamp examinations, and corneal topography.RESULTS:
All 63 surgeries were uneventful. Twelve months postoperatively, outcomes of 58 (92.1%) eyes were available for evaluation. Median uncorrected distance visual acuity (0.1 logMAR [range 0.5 to 0.0 preoperatively and 0.5 to -0.1 postoperatively]) and corrected distance visual acuity (CDVA) (0.0 logMAR [range 0.2 to -0.2 preoperatively and 0.3 to -0.1 postoperatively]) remained stable. Median spherical equivalent changed from +0.63 diopters (D) preoperatively to 0.00 D postoperatively. Median uncorrected near visual acuity increased significantly from 0.7 logMAR (range 1.0 to 0.2) preoperatively to 0.2 logMAR (range 0.8 to -0.1) postoperatively and eyes gained a median of 4 lines (range 1 to 9 lines). Losses of 2 lines of CDVA were noted in 7.1% of eyes. Ring cuts were faintly visible at 12 months.CONCLUSIONS:
The INTRACOR presbyopia procedure showed good and stable visual acuity outcomes over 12-month follow-up but loss of CDVA occurred in 7% of eyes. Overall patient satisfaction with the procedure was approximately 80%. Short treatment time and maintained corneal surface integrity are advantages of this procedure.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Presbiopia
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Substância Própria
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Terapia a Laser
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Lasers de Excimer
Tipo de estudo:
Clinical_trials
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Observational_studies
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Prognostic_studies
Limite:
Adult
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Aged
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article