SEARCH · PubMed Health

Results for “Vitrectomy”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,027 records · Page 57Linked to original sources

PubMed1990

Neovascular glaucoma following pars plana vitrectomy for complications of diabetic retinopathy.

The patient charts of 81 consecutive vitrectomies performed for complications of proliferative diabetic retinopathy were reviewed. Sixty-five preoperative, intraoperative, and postoperative variables were analyzed. In eyes with completed panretinal photocoagulation, only postoperative retinal detachment had a statistically significant correlation with postvitrectomy development of neovascular glaucoma. Eighty-three percent of eyes with detached retinas, as compared with 4% of eyes with attached retinas, developed neovascular glaucoma (P less than .00001). Aphakia alone did not have a statistically significant effect on the development of neovascular glaucoma; however in the presence of retinal detachment the incidence was very high (92%). Our study shows that a completely attached retina and aggressive panretinal photocoagulation are of paramount importance in decreasing the risk of neovascular glaucoma following vitrectomy for complications of proliferative diabetic retinopathy.

Adult↗

PubMed1990

[Treatment of macular holes by vitrectomy and gas].

Five cases of retinal detachment with macular hole show the effectiveness of the treatment: Vitrectomy + exchange Fluid-gas. Red krypton laser applied around macular hole is not necessary. Treatment vitrectomy-exchange Fluid gas must be performed rather than Aspiration-gas in a first attempt.

Aged↗

PubMed1990

[Loss of corneal endothelial cells following pars plana vitrectomy and silicone oil implantation].

Endothelial cell loss contributes to severe corneal decompensation following pars plana vitrectomy and silicone oil injection into the vitreous cavity. The corneal endothelium of 35 eyes (35 patients) was evaluated prospectively before and after pars plana vitrectomy in a clinical study by means of wide field specular microscopy (Roberts and Koester). Special attention was paid to differences between patients with and without silicone oil in the anterior chamber with respect to postoperative complications and endothelial cell loss. In 12 of the 35 eyes silicone oil was present in the anterior chamber. After a 6-month follow-up we found in all 35 eyes an average decrease in endothelial cell density of 22.9% +/- 13.3% compared to the preoperative values. A correlation between pre- and postoperative cell density (r = 0.827) after six months could be demonstrated. Logistic regression was used to estimate the statistical significance of various factors influencing endothelial cell loss such as inflammatory anterior chamber reaction, elevated intraocular pressure and silicone oil in the anterior chamber. Silicone oil in the anterior chamber was proved to be the main factor causing endothelial cell loss (p less than 0.025). Age group and number of previous intraocular surgical procedures showed no significant influence on endothelial cell loss.

Adult↗

PubMed1988

Vitrectomy for nondiabetic vitreous hemorrhage. Retinal and choroidal vascular disorders.

The results and complications of pars plana vitrectomy for nondiabetic vitreous hemorrhage due to retinal and choroidal vascular disorders were studied in 68 eyes of 66 patients. Diagnoses included: retinal branch vein obstruction (34 eyes), choroidal neovascularization (15 eyes), central retinal vein occlusion (5 eyes), Eales' disease (10 eyes), pars planitis (3 eyes), and hemoglobin S-C retinopathy (1 eye). The duration of the vitreous hemorrhage was 6 months or more in 48 eyes (71%), and averaged 17.8 months. Preoperative visual acuity was less than 5/200 in 57 eyes (84%). Best postoperative visual acuity was 5/200 or better in 55 patients (81%), and vision improved two or more lines after vitrectomy in 54 eyes (80%). Patients with retinal branch vein obstruction, Eales' disease, or pars planitis had the best prognosis. Those with central retinal vein obstruction or choroidal neovascularization had the worst prognosis.

Adolescent↗

PubMed1989

[Intraocular pressure during vitrectomy in the diabetic patient].

23 eyes underwent vitrectomy for diabetic proliferative retinopathy complications: vitreous hemorrhage with or without tractional retinal detachment. After 6 months of follow-up, 64% of eyes had final visual acuities of 1/40 or better. Preoperative iris neovascularization and preoperative detachment of the macula have a worse prognosis. Decrease of peroperative complications is allowed by checking of intraocular pressure during vitrectomy.

Adolescent↗

PubMed1989

[Vitrectomy in uveitis].

Although its indications are relatively unfrequent, vitrectomy may be justified in certain types of uveitis. It allows differential diagnosis between vitreal inflammation and infection, accurate diagnosis in several metastatic conditions, Whipple disease with ocular involvement, amyloidosis and specific inflammations of various origin. If vitreous opacities become prominent or if retinal complications occur, therapeutic vitrectomy may be indicated without major risks. It will offer a marked improvement of the vision, an easier treatment for new inflammatory episodes and maybe a reduction of the activity of the inflammatory process.

Amyloidosis↗

PubMed1989

[Combined surgery of vitrectomy and intraocular foreign body extraction].

In combination with vitrectomy, plus lensectomy, optic iridectomy, or IOL implantation as indicated, 121 cases of intraocular foreign body extraction were performed, in which 75.2% of the f. b. were non-magnetic, the number of f. b. in one eye ranged from 1-7, and 93.1% of the vitrectomy were of the closed type. The extraction of f. b. was successful in 97 (80.2%) of the cases on the first attempt, and the total success rate was 96.7%, including those of secondary operations. The instrumentation and procedures involved were also reported.

Adolescent↗

PubMed1989

[Lens opacities following pars plana vitrectomy].

Lens opacities and particularly nuclear sclerosis belong to the most frequent complications after pars plana vitrectomy. Although the causative mechanism is not yet completely understood, the infusion cannula and infusion technique are likely to have important influence on the development of postoperative lens opacities. In order to reduce the flow of the infusion fluid directed to the posterior lens surface we developed a new cannula. Because of its posterior curvature and opening as well as a turbulent flow of the fluid the impairment of the posterior lens surface is diminished. To study the clinical efficacy of the new infusion cannula we examined 235 patients after pars plana vitrectomy during an observation period of 12 months. 14.7% of the total group developed progressive nuclear sclerosis. Significant cataract formation was much less frequent in eyes operated on because of macular pucker (7.3%). This is a lower incidence compared with other investigators.

Cataract↗

PubMed1989

[Intraocular pressure during vitrectomy in diabetic patients].

Adolescent↗

PubMed1989

[Preoperative electroretinogram for predicting postoperative visual function of vitrectomy].

Vitrectomy was performed on 17 patients [19 eyes] who had dense vitreal opacity and precluding inspection of the ocular fundus. The preoperative visual acuity was light perception to 0.1, the postoperative visual acuity was 0.03 to 0.9. The preoperative electroretinogram [ERG] was tested on all patients. The correlation of the amplitudes of the ERG b-wave to the postoperative visual acuities were statistically analysed. The results showed that there was positive correlation of the amplitude of the preoperative scotopic bright ERG b-wave to postoperative visual acuity [r = 0.7709, p less than 0.01], and positive correlation of the amplitude of the preoperative photopic ERG b-wave to the visual acuity [r = 0.8086, p less than 0.01]. It suggests that the bigger amplitude of the preoperative ERG b-wave was, the better postoperative visual acuity was improved. Thus, the preoperative ERG could predict the outcome of vitrectomy in various ocular diseases with vitreal opacities and very low visual acuity.

Adolescent↗

PubMed1989

Vitrectomy when asteroid hyalosis prevents laser photocoagulation.

Asteroid hyalosis is a relatively common disorder of the vitreous that rarely causes visual impairment. However, funduscopic examination and laser photocoagulation can be difficult because of reflections off the asteroid bodies. Although vitrectomy is rarely indicated for impaired visual acuity, we report three cases in which pars plana vitrectomy was necessary to permit required retinal laser photocoagulation. In two patients with proliferative diabetic retinopathy and a third patient with subretinal neovascularization marked asteroid hyalosis precluded photocoagulation by standard techniques.

Aged↗

PubMed1988

Complications of vitrectomy for non-clearing vitreous hemorrhage in diabetic patients.

One hundred consecutive patients with proliferative diabetic retinopathy underwent vitrectomy for nonclearing vitreous hemorrhage. Eighty-two had significantly improved vision; nine had no improvement in vision; and nine had complications which resulted in permanent loss of vision. Only three eyes lost vision because of neovascular glaucoma. Our results indicate that with improved surgical techniques, the incidence of vitrectomy complications is decreasing.

Diabetic Retinopathy↗

PubMed1987

A new temporary keratoprosthesis for pars plana vitrectomy.

Using a new temporary keratoprosthesis in an eye with an opaque cornea and a proliferative vitreoretinopathy, a pars plana vitrectomy combined with a silicone oil injection was successfully performed. The new keratoprosthesis is made of silicone rubber and is fixed to the threphined corneal bed with four 10-0 nylon sutures. It permits an excellent view of the intraocular structures and allows vitreoretinal surgery even in the region of the pars plana and vitreous base. It is replaced by a corneal graft at the end of the vitrectomy.

Adult↗

PubMed1988

Results of pars plana vitrectomy in Behçet's disease.

The result of pars plana vitrectomy in Behçet's syndrome has been investigated in patients with vitreous hemorrhage and condensation. Surgery was performed in seven cases. All of the patients became more hypotonic after surgery, and phthisis developed in less than two years. It is suggested that pars plana vitrectomy should not be performed in Behçet's patients.

Behcet Syndrome↗

PubMed1986

The role of vitrectomy following accidental intraocular injection of deposteroid preparations.

Four cases of accidental intraocular injection of deposteroid preparation treated by early vitrectomy are reported. Previous reports indicate that with conservative management loss of vision is due to retinal detachment or optic neuropathy. Early vitrectomy is advocated to allow identification and treatment of retinal breaks to prevent retinal detachment and the removal of potentially retino-toxic preservatives and carriers contained in the steroid preparations. Immediate paracentesis may prevent ischaemic optic neuropathy.

Adult↗

PubMed1987

The management of endophthalmitis: diagnostic and therapeutic guidelines including the use of vitrectomy.

The use of vitrectomy in the management of endophthalmitis is controversial. All cases of suspected clinical endophthalmitis should have immediate anterior chamber and vitreous aspiration combined with an intravitreal antibiotic/steroid injection. Vigorous systemic, topical and periocular therapy should accompany frequent examinations of the patient. Vitrectomy is recommended in selected clinical situations. An intraocular lens usually can be left in place and should be removed only in certain rare instances.

Endophthalmitis↗

PubMed1987

Vitrectomy and fluid infusion in the treatment of delayed suprachoroidal hemorrhage after combined cataract and glaucoma filtration surgery.

I report the successful treatment of one case of massive, delayed suprachoroidal hemorrhage that occurred after combined intracapsular cataract extraction and trabeculectomy. Significant vitreous incarceration in the filtration site and consequent vitreoretinal traction were present so that a limbal approach anterior vitrectomy was necessary before choroidal drainage could be accomplished safely. An infusion of balanced salt solution through a limbal infusion cannula was employed during vitrectomy and also during drainage of suprachoroidal blood. The simultaneous intravitreal infusion helped to create an efficient, controlled choroidal drainage procedure. In addition to relieving vitreoretinal traction, this technique helps prevent the periods of extreme hypotony experienced when choroidal drainage and anterior chamber reformation are accomplished serially in step-wise fashion. This use of this method also obviates the compromised view of the peripheral retina which occurs when air is introduced into the vitreous cavity.

Aged↗

PubMed1987

Blue field entoptoscopy in the preoperative evaluation of vitrectomy candidates.

Twenty-four patients with vitreous hemorrhage scheduled for pars plana vitrectomy were evaluated with the blue field entoptoscope. Correlation of pre- and postoperative findings in patients with and without macular pathology was highly irregular, apparently due to mechanical obstruction of light transmission by the vitreous hemorrhage. Blue field entoptoscopy is therefore not recommended as a tool in the preoperative evaluation of vitrectomy patients.

Evaluation Studies as Topic↗