Effect of intraocular silicone oil on ocular tissue.

The aim of this study was to find out to which extent the instilled silicone oil affects the changes of lens, cornea, and the ocular pressure with regard to its time kept in the operated eye with a lens. The study was carried out on the sample of 40 patients, divided in three groups. The first group of patients with the silicone oil kept in the eye during 3 months, the second one during 3-6 months, and the third one during 6-9 months. Statistically important changes were observed in the progression of the lens opacification with the patients, progressively with the time of keeping the silicone oil in the eye. The followed cornea opacifications and increased ocular pressure were not statistically significantly linked with the length of keeping the silicone oil in the eye, so that it can be concluded that the silicone oil is the best substitute for the vitreous body but it should be removed from the eye, most frequently, in the period of 3-6 months from the date of its instillation, and after 3 weeks at the earliest.

Cataract surgery and postoperative complications in diabetic patients.

Diabetes mellitus influences the function and morphology of the eye lens. The cataract is the second most common complication of diabetes mellitus on the eye. A hundred patients with cataract were examined in the prospective study. The patients were divided into two groups. The first group consisted of 50 patients with cataract who had not suffered from a system or local disease. The second group consisted of 50 patients with cataract and diabetes mellitus that had lasted for at least five years. In both groups the patients underwent identical cataract extra capsular extraction with intraocular PMMA (polymethylmethacrylate) lens implantation in camera posterior. The objective of this study was to compare the two groups of patients in order to find out the most common intraoperative or postoperative complications in diabetics. The most common postoperative complications in patients suffering from diabetes were inflammatory reactions and bleeding: postoperative keratopathy, uveitis anterior serous and uveitis anterior fibrinous with posterior sinechia and opacity of the posterior lens capsule as results. Postoperative visual acuity was worse in the patients in group II on the seventh day and six months after operation. It was diabetic retinopathy and its progression that caused deterioration of visual acuity. Diabetic retinopathy and its progression, as well as maculopathy were found only in patients who were not treated with photocoagulation before the operation.