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Biomedical subjects

W Omulecki

Publications and source records attributed to W Omulecki.

31 records · Page 2Linked to original sources
PubMed1993

[Early and late observations of intraocular pressure in patients with implanted intraocular lens].

The aim of the paper was to evaluate intraocular pressure changes that follow the implantation of posterior intraocular lens. In two examined groups of patients (I group--sulcus ciliaris, II group--intracapsular implantation) the decrease of average intraocular pressure values was observed in the early days after surgery, then during 3 months, it gradually returned to the initial values. This decrease was less marked in the first group of patients. Long-term observation showed the stabilization of intraocular pressure at a level similar to the mean values before surgery.

Adult↗
PubMed1991

[3 cases of tumors of the optic disk].

Presented are 3 cases of tumors affecting the papilla of the optic nerve. On the basis of the ophthalmoscopic picture, of fluorescein angiography and of clinical symptoms the authors identified a capillary haemangioma, a pigmentary naevus and a meningeal hernia. In all the cases observation did not detect any increase in the changes.

Adult↗
PubMedDate not supplied

Evaluation of early corneal endothelial cell loss in bimanual microincision cataract surgery (MICS) in comparison with standard phacoemulsification.

PURPOSE: To analyze early corneal endothelial cell loss due to microincision cataract surgery (MICS) in comparison with standard phacoemulsification through the temporal clear corneal incision. METHODS: The examined group consisted of a nonrandomized, consecutive prospective series of 20 eyes of 20 patients who underwent uneventful microincision cataract surgery. Twenty eyes of 20 patients who underwent standard phacoemulsification with foldable intraocular lens (IOL) implantation served as a reference group. Patients with corneal disorders, contact lens wear, previous intraocular surgery, and a history of ocular trauma were excluded from the study. Patients were examined preoperatively and 10 days postoperatively. The following items were evaluated in this study: corneal endothelial cell density, intraoperative phaco power, effective phaco time, as well as pre- and postoperative visual acuity. Corneal endothelial cell counts were done in the central part of the cornea using a non-contact Topcon SP 2000P specular microscope before and 10 days after the surgery. The measurements were performed in a semiautomated, masked manner. Statistical analysis was done using nonparametric tests (Wilcoxon signed-ranks test and Mann-Whitney U test). RESULTS: All patients in the study underwent uneventful surgery. Best-corrected visual acuity (BCVA) examined 10 days postoperatively in the MICS group was 0.94+/-0.094, whereas in the standard phacoemulsification group it was 0.90+/-0.094. There was no significant difference between BCVA in the two groups (Mann Whitney U two-tailed test: p>0.05). In both groups there was a significant decrease in postoperative endothelial cell densities (ECDs) when compared to preoperative values. Mean postoperative ECDs were 2235+/-418 cells/mm2 in the MICS group and 2079+/-399 cells/mm2 in the standard phacoemulsification group; the difference was not statistically significant (Mann-Whitney U test: p>0.05). Patients in the MICS group lost an average of 9.5% of cells, whereas patients after standard phacoemulsification lost about 7.6% of cells. This difference was statistically insignificant. CONCLUSIONS: Microincision cataract surgery induced corneal endothelial cell loss similar to a standard phacoemulsification and allowed excellent visual results in this series of patients. These results support the use of MICS technique for cataract surgery.

Adult↗
PubMedDate not supplied

Transscleral suture fixation and anterior chamber intraocular lenses implanted after removal of posteriorly dislocated crystalline lenses.

The surgical technique is described for simultaneous removal of posteriorly dislocated crystalline lenses and implantation of anterior chamber (AC) or scleral fixation posterior chamber (PC) intraocular lenses (IOL) using pars plana vitrectomy. Twenty-two patients underwent this complex operation. Observation time ranged from 2 to 10 months (mean 5 months). Best-corrected post-operative visual acuity was 1.0 in half the patients in the AC group (n = 12), and in 80% of the PC group (n = 10). It was less than 0.5 in 25% of cases in the AC group whereas all PC patients had visual acuity 0.5 or better. In nine cases with pre-operative ocular hypertension, post-operative intraocular pressure became normal, although topical glaucoma therapy was necessary in three patients in the AC group and in one from the PC group. No severe complications were found. Removal of posteriorly dislocated crystalline lens using pars plana vitrectomy and limbal incision is a safe procedure. Simultaneous AC or transscleral PC lens implantation is a good alternative to contact lenses. Visual rehabilitation was good in both groups of patients, although post-operative visual acuity was better after PC transscleral fixation than after AC surgery.

Adult↗
PubMedDate not supplied

[Observation or enucleation--a still unsolved problem in patients with uveal melanoma].

The authors performed retrospective investigations and evaluated the influence of the period of time between the onset of the first symptoms of the disease and the enucleation on the life expectations; the groups of patients treated by enucleation and non-treated were compared. Various opinions on the influence of enucleation on the prognosis in patients with uveal melanoma were discussed.

Age Factors↗
PubMedDate not supplied

[Intraocular lens implantation with circular capsulotomy and "envelope" techniques--comparison of results].

The studies comprised 200 patients with presenile and senile cataract who underwent cataract surgery with IOLs implantation. In 100 consecutive cases circular capsulotomy and in subsequent 100 "envelope" technique were used. The results indicate the advantages of "envelope" method: less intra- and post-operative complications, quicker visual convalescence; it is easier and safer.

Cataract Extraction↗
PubMedDate not supplied

[Visual field in pseudophakia].

Estimation of the visual field in pseudophakic eyes was the aim of this study. Results were compared between the groups of anterior chamber lenses, posterior ciliary sulcus fixation lenses, posterior intracapsular lenses and the control group of phakic patients. Each group consisted of 25 subjects. Visual field measurements were done using dynamic method with Goldmann perimeter and visual field areas were determined by adequate computer program. Statistical analysis of data showed the reduction of visual field in pseudophakic groups when compared to the control group and no significant differences between different types of implants.

Adult↗
PubMedDate not supplied

[Implantation of bifocal intraocular lens from personal material].

Results of 25 bifocal IOLs implantations are presented. Follow-up time ranged from 3 to 6 months. Visual acuity for distant and near vision was estimated. The results were compared with a control group of 50 monofocal IOLs implantations. It was found that bifocal IOLs implantations enable good visual acuity for distant and near vision without additional correction, though visual acuity for distant vision was better in the monofocal group. Patients with bifocal IOLs have complained of glare and/or monocular diplopia more often than patients with monofocal IOLs.

Adult↗
PubMedDate not supplied

[Value of vitrectomy in treatment of lens dislocation into the vitreous].

PURPOSE: To present own experiences in vitrectomy in cases of subluxation or luxation of the lens to the vitreous cavity. MATERIAL AND METHODS: 41 eyes with subluxation (16) and luxation (25) of the lens, operated on between May 1992 and April 1994 were analysed. Before the surgery, secondary glaucoma was observed in 18 eyes, hypotony in 8. The aim of pars plana vitrectomy was to release the lens from the surrounding tissues, then the lens was put into anterior chamber and removed by limbal incision. RESULTS: Visual acuity improvement was achieved in 73% of cases. Intraocular pressure was normalized in 14 eyes. Retinal detachment developed in 2 eyes after the surgery, and in one retina was reattached using silicone oil tamponade. CONCLUSION: Our results indicate that it is possible to remove the dislocated lens using vitrectomy without perfluorocarbon.

Female↗