Resultados da troca de lente intra-ocular de hidrogel opacificada

Abstract

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Microscopic analysis of opacification in Ioflex® hydrophilic acrylic intraocular lenses

“…When comparing the visual acuity before and after IOL opacification, we noticed that all patients lost more than three Snellen lines in visual acuity. In a previous study of 12 patients with calcified IOL, twenty percent of the patients lost more than three Snellen lines in visual acuity, 46.7% lost less than three Snellen lines in visual acuity and 13.3% maintained the same visual acuity (14) . In case 3, during a one-month period the uncorrected visual acuity decreased from 20/150 to 20/400 on the right eye.…”

“…Other studies have described IOL calcium deposits in patients with hypertension (3,5,8,14) . However, not all patients with IOL calcification have underlying systemic diseases (3,5,8,14) and not all cases operated for bilateral cataracts with implantation of the same IOL type have bilateral lens opacification (3) , as seen in cases 1, 2 and 5. The IOLs in each of these cases came from different lots, which might have had different susceptibilities to develop the complication.…”

“…The mean period between phacoemulsification and patient presentation with decreased vision was 31 months, with minimum being 29 and maximum 33 months. The literature shows that this mean period varies from 16.4 to 35.3 months, depending on the case series (14,17) . When comparing the visual acuity before and after IOL opacification, we noticed that all patients lost more than three Snellen lines in visual acuity.…”

“…In another study from Brazil, one of twelve patients who had IOL explantation due to calcification exchanged with a PMMA IOL lost more than 3 Snellen lines of visual acuity. He had a decompensation of proliferative diabetic retinopathy and neovascular glaucoma (14) . There were no intraoperative complications in all cases presented.…”

“…In cases 2 and 3, a dense fibrous tissue was connecting the haptics of the lens to the bag. In these cases, to avoid complications, the haptics were cut and only the optic of the lens was removed, as previously described in other studies (5,10,14) . Yu et al reported poste-rior capsule rupture and zonule dehiscence during explantation of opacified IOLs, which were adequately managed, not affecting visual recovery (5) .…”