Long-term results of implantation of phakic posterior chamber intraocular lenses
| Autor: | Irene Dejaco-Ruhswurm, Birgit Lackner, Gerald Schmidinger, Carmen Franz, Stefan Pieh, C. Simader, Christian Skorpik |
|---|---|
| Rok vydání: | 2004 |
| Předmět: |
Adult
Male medicine.medical_specialty genetic structures medicine.medical_treatment Visual Acuity Cell Count Intraocular lens Uncorrected visual acuity Cataract Postoperative Complications Lens Implantation Intraocular Risk Factors Ophthalmology Lens Crystalline Myopia medicine Humans Prospective Studies Lenses Intraocular business.industry Incidence Endothelium Corneal Medical school Long term results Middle Aged Cataract surgery eye diseases Sensory Systems Surgery medicine.anatomical_structure Intraocular lenses Implantable Contact Lens Lens (anatomy) Disease Progression Female sense organs business Follow-Up Studies |
| Zdroj: | Journal of Cataract and Refractive Surgery. 30:2269-2276 |
| ISSN: | 0886-3350 |
| DOI: | 10.1016/j.jcrs.2004.07.018 |
| Popis: | Purpose: To study the incidence and progression of lens opacification after implantation of phakic posterior chamber intraocular lenses for myopia and its correlation with vaulting and endothelial cell density (ECD). Setting: Department of Ophthalmology, University of Vienna Medical School, Vienna, Austria. Methods: An implantable contact lens (ICL V4, Staar Surgical Inc.) was inserted in 76 myopic eyes. Patients were prospectively followed preoperatively and at 1, 3, 6, 12, 24, and 36 months. The uncorrected visual acuity and best corrected visual acuity (BCVA) were determined. Vaulting was measured optically with a Jaeger II pachymeter, and the crystalline lens was examined at the slitlamp for the presence and characteristics of opacification. Endothelial cell morphometry was performed by specular microscopy, and the ECD was calculated. Eyes in which lens opacification developed were followed for at least 12 months to determine the degree and course of visual impairment. Results: Lens opacification occurred in 11 eyes (14.5%). Opacification was correlated with intraoperative trauma to the crystalline lens, age older than 50 years, and decreased ECD values throughout the observation period. Vaulting of the ICL did not correlate with the risk for lens opacification. After onset of lens opacification, 6 eyes (55%) had a stable BCVA within ±0.5 lines and 5 eyes had progressive opacification, losing between 3.5 lines and 0.5 lines (mean 1.8 lines ± 1.1 [SD]). Three eyes (3.9%) in the progressive group had a 1- to 2-line loss of BCVA over preoperative values and subsequently had cataract surgery. Conclusions: Risk factors for lens opacification after implantation of the model V4 ICL included intraoperative trauma to the crystalline lens and older age. Decreased ECD in eyes with opacification suggests ongoing inflammation as a cause. Patients younger than 45 years may have a significantly lower incidence of opacification. |
| Databáze: | OpenAIRE |
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