Wavefront-optimized excimer laser in situ keratomileusis for myopia and myopic astigmatism: Refractive outcomes and corneal densitometry
| Autor: | Ahamd Muneer Otri, Usama Fares, Harminder S Dua, Mouhamed Al-Aqaba, Lana A Faraj |
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| Rok vydání: | 2012 |
| Předmět: |
Adult
Male medicine.medical_specialty Visual acuity genetic structures media_common.quotation_subject medicine.medical_treatment Keratomileusis Laser In Situ Scheimpflug principle Visual Acuity Keratomileusis Refraction Ocular Cohort Studies Contrast Sensitivity Cornea Young Adult Ophthalmology Myopia medicine Humans Contrast (vision) Prospective Studies Prospective cohort study Dioptre Aged media_common business.industry Astigmatism LASIK Middle Aged eye diseases Sensory Systems Treatment Outcome Female Lasers Excimer Surgery sense organs medicine.symptom Densitometry business |
| Zdroj: | Journal of Cataract and Refractive Surgery. 38:2131-2138 |
| ISSN: | 0886-3350 |
| Popis: | Purpose To determine the refractive outcomes of wavefront-optimized laser in situ keratomileusis (LASIK) treatments, in particular to measure corneal densitometry after LASIK using the densitometry function of the Pentacam Scheimpflug system. Setting Division of Ophthalmology and Visual Sciences, University of Nottingham, United Kingdom. Design Cohort study. Methods Changes in postoperative visual acuity, refraction, and contrast sensitivity were evaluated after wavefront-optimized laser treatment. Corneal densitometry was evaluated with the Scheimpflug system before and after LASIK. Results One year postoperatively, the uncorrected distance visual acuity was 6/6 or better in 92% of eyes and 6/9 or better in all eyes. Eighty-six percent of eyes had no change in the corrected distance visual acuity (CDVA); 4% gained 1 or more lines. Wavefront-optimized LASIK was stable over 1 year postoperatively. Eighty-nine percent of eyes were within ±0.50 diopter (D) and 100% were within ±1.00 D of the intended correction 1 year postoperatively. Contrast sensitivity showed a nonsignificant improvement (1.55 ± 0.10 [SD] preoperatively to 1.57 ± 0.09 12 months postoperatively) ( P > .05). There was a nonsignificant increase in corneal densitometry 1 year postoperatively (from 12.72 ± 2.43 to 13.04 ± 2.58) ( P > .05). No correlation was found between corneal densitometry and contrast sensitivity or CDVA. Conclusions Wavefront-optimized LASIK gave excellent refractive and visual outcomes and did not seem to affect corneal densitometry significantly 1 year postoperatively. However, larger studies may show a masked effect on corneal densitometry. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned. |
| Databáze: | OpenAIRE |
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