Biomedical subjects

Wojciech Omulecki

Publications and source records attributed to Wojciech Omulecki.

24 records · Page 2Linked to original sources

PubMed2002

[Massive choroidal hemorrhage as a late trabeculectomy complication ].

The purpose of this paper was to present the case of an unusual late complication of filtering glaucoma surgery. A massive choroidal hemorrhage occurred 5 years after trabeculectomy and extracapsular cataract extraction. The diagnosis was confirmed by MRI examination. Improvement in choroidal status and in visual acuity (from hand motions to 6/12 with aphakic correction of 12 diopters) was observed during three weeks of medication. The retina and the choroid remained attached during two years of observation.

Aged↗

PubMed2002

[Refraction changes after cataract extraction with IOL implantation in the eyes with previous performed vitrectomy].

PURPOSE: To determine differences between the predicted and postoperative refraction after cataract extraction with intraocular lens implantation in the eyes, which previous underwent vitrectomy. MATERIAL AND METHODS: Fifty three eyes of 52 patients underwent the analysis: twenty five in group I, nineteen in group II and nine eyes with previous scleral buckling in group III. All the eyes had ECCE and IOL with PMMA implantation after vitrectomy. In groups II and. III silicone oil tamponade was used and removed before cataract extraction. Thirty eyes of the control group K underwent cataract surgery and IOL implantation alone. The IOL power calculation was performed with SRK II formula. The predicted and postoperative refractions were compared. The follow-up was minimum 4 months (on average 15 +/- 12.71 months). RESULTS: The postoperative refractions were significantly shifted toward myopia than it was predicted--1.41 +/- 1.21 D in group I, -0.81 +/- 2.11 D in group II and -3.03 +/- 1.49 D in group III. In the control group K the difference was--0.07 +/- 0.91. CONCLUSIONS: Myopic shift of postoperative refraction after cataract surgery should be considered, when calculating the IOL power in the eye after vitreoretinal procedures.

Adult↗

PubMed2002

[A study of human lens epithelial cells by light and electron microscopy and by immunohistochemistry in different types of cataracts].

PURPOSE: To evaluate the characteristics of cataract changes in lens epithelial cells (LECs), in different types of human cataract. MATERIAL AND METHODS: Anterior capsules for the study were obtained from patients with different types of cataracts during extracapsular cataract extraction, or phacoemulsification using continuous curvilinear capsulorhexis. LECs attached to the anterior capsules were analyzed for morphological changes by light and electron microscopy, and for cellular characteristics by immunohistochemistry. The reactivity to cytokeratins 5,6,8,17 and 19 (arker for epithelial cells) and to vimentin (arker for mesenchymal cells) was determined. RESULTS: The consecutive degenerative changes were observed in most of the cells: multilayered cells, nuclei of abnormal diameters and shapes, vacuolation of nuclei and cytoplasm. LECs were immunohistochemically positive for cytokeratin and vimentin, or only for vimentin in all types of cataract. Some of LECs showed morphological and immunohistochemical characteristics of mesenchymal cells. CONCLUSIONS: Lens epithelial cells show similar degenerative changes in different types of cataract and may have the ability to transdifferentiate into mesenchymal cells.

Adult↗

PubMed2002

[Removal of luxated crystalline lenses by intravitreal phaco-emulsification].

PURPOSE: To present the complex surgical technique used for the management of luxated crystalline lenses and to evaluate results of this treatment. MATERIAL AND METHODS: Between May 2001 and February 2002, ten patients (ten eyes) were treated for crystalline lens luxation. There were 4 females and 6 males in this group, their age ranged between 46 and 78 years (average 63 years). In all cases, the surgical technique comprised pars plana vitrectomy, perfluorocarbon liquid injection and crystalline lens phacoemulsification in the vitreous cavity. Simultaneously, anterior chamber IOLs were implanted in 8 eyes, and scleral-fixation, posterior chamber IOLs in 2 eyes. The follow-up ranged between 1 and 9 months (mean 2.7 months). RESULTS: All dislocated lenses were successfully removed. No complications occurred during phacofragmentation. We achieved improvement in visual acuity in 5 cases, while good pre-operative visual acuity (with aphakic correction) did not change postoperatively in remaining 5 eyes. The mean preoperative visual acuity was 0.52 (0.1-1.0), and it was 0.75 (0.2-1.0) postoperatively. In 9 cases very good visual acuity (6/6-6/12) was achieved. There were no serious complications. In the first postoperative days transient hypotonia and Descemet's membrane folds were observed in 8 eyes, fibrinous reaction in the anterior chamber in one eye, and dispersed blood in the vitreous cavity in 2 eyes. CONCLUSION: The management of luxated lenses using the described method is safe. Very good functional results and lack of severe complications are very encouraging. Additional cases with a longer follow-up study are necessary to support our opinion.

Aged↗

PubMedDate not supplied

Pars plana vitrectomy and transscleral fixation of black diaphragm intraocular lens for the management of traumatic aniridia.

BACKGROUND AND OBJECTIVES: Partial or complete aniridia occurring after severe ocular trauma is a difficult therapeutic problem. Diaphragm intraocular lenses were developed for the correction of aniridia, but the safety and efficacy of implanting such lenses are not well established in traumatic cases because of very few reports, and the small number of cases studied. PATIENTS AND METHODS: Six patients, 4 men and 2 women with a mean age of 44 years, were treated for traumatic aniridia using pars plana vitrectomy and transscleral fixation of a black diaphragm intraocular lens. Total aniridia was observed in 3 eyes and partial aniridia in 3 eyes. Four eyes were aphakic and severe lens subluxation was seen in 2 eyes. Vitreous hemorrhage coexisted in 2 patients and bacterial endophthalmitis was present in 1 patient. Follow-up time ranged between 4 and 39 months (mean, 23 months). RESULTS: Best-corrected visual acuity improved in 5 patients and 1 remained unchanged. Good visual acuity (20/20 - 20/40) was achieved in all cases and all lenses were well-centered. No severe complications were noted. Three of 6 patients required glaucoma topical medications pre- and postoperatively achieving good intraocular pressure control. CONCLUSION: The management of traumatic aniridia using pars plana vitrectomy and implantation of scleral fixation black diaphragm intraocular lenses seem to be safe. Very good functional results and lack of severe complications are encouraging. Additional cases with a longer follow-up study are necessary to support our opinion.

Adult↗

PubMedDate not supplied

Management of bilateral ectopia lentis et pupillae syndrome.

A 52-year-old patient presented with signs clinically consistent with ectopia lentis et pupillae syndrome. The patient was treated successfully with vitrectomy, dislocated lens removal using perfluorocarbon liquid and phacofragmentation in the vitreous cavity, pupil reconstruction, and scleral-fixated intraocular lens implantation in both eyes. Despite the fact that the surgery was successful in technical terms, the final visual outcome was not as good as expected. This was caused by the optic nerve atrophy resulting from long-lasting glaucoma. Nevertheless, the described surgical techniques may be considered an effective method of treatment in cases of ectopia lentis et pupillae syndrome.

Ectopia Lentis↗