Accuracy of visual correction in photorefractive keratectomy
| Autor: | Jenny P Deva |
|---|---|
| Rok vydání: | 1998 |
| Předmět: |
Adult
Male medicine.medical_specialty Visual acuity genetic structures medicine.medical_treatment Visual Acuity Astigmatism Photorefractive Keratectomy Cornea Ophthalmology Myopia Medicine Humans Retrospective Studies business.industry High myopia Reproducibility of Results Middle Aged medicine.disease Simple myopia eye diseases Photorefractive keratectomy Surgery Female Lasers Excimer sense organs medicine.symptom business |
| Zdroj: | Journal of refractive surgery (Thorofare, N.J. : 1995). 14 |
| ISSN: | 1081-597X |
| Popis: | PURPOSE: To investigate the accuracy of preoperative optical assessment and other factors that influenced the final visual outcome after photorefractive keratectomy (PRK). METHODS: The records of 126 eyes from 54 male and 72 female eyes were studied retrospectively, ranging from 6 months to 3 years post-PRK. Refractive errors ranged from low to high myopia and astigmatism, and proper and careful preoperative selection of patients was made. A single standard ablation zone (AZ) of 6.00mm and transition zone (TZ) of 7.00mm was made in all cases. RESULTS:The study population showed a high degree of accuracy in visual outcome. In simple myopia, 92.3% of female eyes and 84.1% of male eyes had a visual acuity of more than 6/9 or better. In myopia with astigmatism, 83.05% of female and 65.9% of male eyes had a visual acuity of 6/9 (20/40) or better. However, despite the residual myopia, whether with or induced astigmatism, post PRK visual acuity seemed to be less influenced by it, than as in the pre-PRK status. CONCLUSION: This study showed an accuracy in visual outcome of >90% for females and >80% for males. The Nidek EC-5000 was satisfactory for its purpose. [J Refract Surg 1998;14:S215-S217] |
| Databáze: | OpenAIRE |
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