1.A Review 50 Cases of the Sheets Lens Implantation with a Case of Planned Endocapsular Cataract Extraction.
Journal of the Korean Ophthalmological Society 1987;28(3):569-573
A retrospective study of 50 consecutive, planned extracapsular cataract extraction with Sheets posterior chamber lens(Model 30LE) inserted in the capsular bag on the outcome between six and twelve months postoperatively, was carried out. Visual improvement of 20/40 or better was obtained in 94.7% as the patients with preexisting ocular pathology were excluded. The postoperative complications consisted of transient iritis in three cases, posterior capsular opacity in one case, and iris capture in one case. The endocapsular cataract extraction with Sheets lens implantation seems to be more safe and effective surgical procedure than any other technique in the case of hypermature cataract.
Cataract Extraction*
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Cataract*
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Humans
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Iris
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Iritis
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Methods
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Pathology
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Postoperative Complications
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Retrospective Studies
2.Ultrastructure and blood-iris barrier in experimental rubeosis iridis in rabbit.
Myung Kyoo KO ; ll Won PARK ; Young Joon KIM ; Joon Kiu CHOE
Korean Journal of Ophthalmology 1990;4(2):66-72
Iris neovascularization was produced in rabbits by hypotony following repeated aspiration of the vitreous. The hypotony was produced after 0.3 ml of vitreous fluid was aspirated using a 25-gauge needle through the pars plana of 10 rabbits. For the histochemical study, horseradish peroxidase(HRP) was injected through the ear lobe vein. After fixation of the iris tissue, the tissue was treated with diaminobenzidine and examined with both light microscopy and transmission electron microscopy. The newly-formed vessel was abundant, particularly on the upper stroma of the iris. The new vessel formation was evident due to the proliferation of endothelial cells, which may have been derived from preexisting iris vessels. The endothelial cells of the newly-formed vessels revealed prominent villous processes into the vascular lumen, formation of the marginal flap, numerous fenestrations in the endothelial junction, and reaction product onto extravascular space by the cytochemical electron microscopy. These results suggest that hypotony in the rabbit produces the disruption of the blood-iris barrier and the balance between angiogenesis-antiangiogenesis modulation.
Animals
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Biological Transport, Active
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Disease Models, Animal
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Horseradish Peroxidase/diagnostic use
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Iris/*blood supply/*ultrastructure
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Iritis/*pathology
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Neovascularization, Pathologic/*pathology
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Rabbits
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Vitreous Body/surgery