Long-term visual results of bifocal intraocular lens implantation
Autor: | Teresio Avitabile, Filippo Marano, Alfredo Reibaldi, Salvatore Michele Biondi, Emanuele G Canino |
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Rok vydání: | 1999 |
Předmět: |
Adult
Male medicine.medical_specialty Distance visual acuity Visual acuity genetic structures media_common.quotation_subject medicine.medical_treatment Visual Acuity Intraocular lens Contrast Sensitivity Patient satisfaction Coated Materials Biocompatible Lens Implantation Intraocular Ophthalmology Surveys and Questionnaires medicine Contrast (vision) Humans Prospective Studies Prospective cohort study media_common Lenses Intraocular Phacoemulsification business.industry Middle Aged eye diseases Sensory Systems Intraocular lenses Patient Satisfaction Optometry Surgery Female medicine.symptom business Follow-Up Studies |
Zdroj: | Journal of cataract and refractive surgery. 25(9) |
ISSN: | 0886-3350 |
Popis: | Purpose To evaluate the long-term visual results and variability in contrast sensitivity in patients with heparin-surface-modified (HSM) diffractive bifocal intraocular lenses (IOLs). Setting Institute of Ophthalmology, University of Catania, Italy. Methods In this prospective study, visual acuity (distance and near) and contrast sensitivity were measured in 35 patients who had phacoemulsification with bifocal diffractive IOL (model 811E, Pharmacia) implantation. Patient satisfaction was also evaluated using a questionnaire. Mean follow-up was 20 months (range 18 to 24 months). Results At the last examination, mean distance visual acuity was 0.79 ± 0.2 (SD) without correction and 1.0 ± 0.15 with best correction. Mean uncorrected near visual acuity was J1.6 ± J0.77 and with best distance correction, J1.19 ± J0.49. No statistically significant changes in visual acuity were evident at the last follow-up (Student t test). No changes were found in contrast sensitivity reduction over time, nor were late postoperative complications noted. Overall patient satisfaction was rated as good by 94.3% of patients with best distance correction. Conclusions The diffractive bifocal HSM IOL provided good visual performance for distance and near over time. In relation to the low rate of postoperative complications, the slight contrast sensitivity reduction was stable during follow-up. |
Databáze: | OpenAIRE |
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