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41.
Filtering iridocycloretraction in chronic closed-angle glaucoma 总被引:3,自引:0,他引:3
In 98 patients, 112 eyes with chronic closed-angle or combined glaucoma were operated on using filtering iridocycloretraction, including preparation of two limbal-based scleral strips that were introduced through scleral incisions into the anterior chamber and the supraciliary space. The intraocular pressure was controlled (less than or equal to 21 mm Hg) in 107 eyes by surgery alone and in two eyes with medication by three to four weeks postoperatively. Ninety-one eyes were followed up for 12 to 30 months (mean, 19 months). The intraocular pressure was controlled in 78 eyes by surgery alone and in four eyes with medication. Three eyes were operated on repeatedly. 相似文献
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A polymer system was developed for use in permanent inflation of detachable balloons, to avoid long-term reliance on the integrity of balloon shells or valve mechanisms. This system is based on 2-hydroxy-ethyl methacrylate (HEMA) as the monomer, in combination with a cross-linking agent and a water-soluble curing system. The low-viscosity, hydrophilic mixture can be exchanged through a small-bore catheter into a detachable balloon and polymerizes in 40-60 minutes at body temperature. Partially polymerized HEMA can cause vascular occlusion; hence, careful timing of balloon detachment is required. The evolution of the radiographic appearance of HEMA-filled balloons is predictable. The balloons remain radiopaque on plain radiographs as long as the balloon shell and valve mechanisms are competent. After rupture of the shell or failure of the valve mechanism, the balloons become invisible on plain radiographs but remain hyperattenuating on computed tomography scans. 相似文献
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A multifactorial mathematical analysis with a diagnosis presented as a complex number was used in assessing results of 10-year follow-up of ophthalmic hypertension subjects. When the follow-up was over, the patients were divided into three groups by the findings at clinical examination. Group I patients (37%) recovered normal ophthalmic tone, group II patients (34%) remained hypertensive and group III (29%) developed an open angle primary glaucoma. The mathematical processing of diagnostic signs permitted an accurate diagnosis and monitoring of the process. 相似文献