AIM: To evaluate both the silicone and acrylic intra ocular lenses as regards the visual acuity, contrast sensitivity, IOL decentration, aqueous flare, lens deposits and development of PCO.
METHODS: 55 eyes of 53 cataractous patients were included in this study, they were prospectively randomized to receive silicone or acrylic intra ocular lenses (IOLs), 35 eyes received acrylic IOLs, and 20 eyes received silicone (IOLs Soflex). Two types of acrylic IOLs were used in this study, the AcrySof acrylic lens (20 IOLs) and the Soflec acrylic lens (15 IOLs), The patients were selected from outpatient clinic of the ophthalmic department of Benha Faculty of Medicine Hospital. All cases underwent full ophthalmological examination preoperatively. Evaluation and analysis of operative and postoperative findings were recorded and patients were followed up for one year.
RESULTS: The procedure of folding and implantation went straight forward in most of the cases. Acrylic IOLs, however were found to unfold in a slower and better controlled manner, this made implantation of the Acrylic IOLs easier. The postoperative inflammatory reaction was mild with both types of the IOLs but silicone group had a significantly higher postoperative aqueous inflammatory cell count than the acrylic group. There was no statistically significant difference either in the best corrected visual outcome, or in contrast sensitivity in either group of IOLs used. Posterior capsule opacification developed in 5 cases and there was a significant increase in the incidence of PCO in association with silicone IOLs as compared to Acrylic IOLs, there was however a non significant difference in the incidence of PCO in association with either type of Acrylic IOLs.
SETTING: Benha Faculty of Medicine hospital in the period between February 2000 to January 2002.
CONCLUSION: Both silicone and acrylic intraocular lenses are well tolerated in the eye and result in a excellent final outcome, Acrylic lenses however were found to be easier in their manipulation and were associated with a less incidence of posterior capsule opacification
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