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At least 523 records · Page 29Linked to original sources

Surgical treatment of giant retinal tears with inverted posterior retinal flaps.

We treated 23 consecutive cases of giant retinal tears with inverted retinal flaps. We used pars plana vitrectomy together with an intravitreal bubble to unfold the posterior retinal flap, combined with cryotherapy to cause a chorioretinal adhesion and a broad scleral buckle. The vitrectomy was done after applying cryotherapy so viable retinal pigment epithelial cells in the vitreous cavity could also be removed. Thirteen eyes had giant tears measuring 90 to 180 degrees (Group 1), eight eyes had giant tears measuring 180 to 270 degrees (Group 2), and two eyes had giant tears larger than 270 degrees (Group 3). The retina was successfully reattached in 11 of the 13 eyes in Group 1, each of the eight eyes in Group 2, and one of the two eyes in Group 3. We believe that vitrectomy and lavage of the vitreous cavity after applying cryotherapy was important in reducing the incidence of proliferative vitreoretinopathy and improving our success rate.

Adolescent↗

Complications of acute symptomatic posterior vitreous detachment.

During a ten-year period, 172 eyes of 155 patients developed acute symptomatic posterior vitreous detachments. The study included only patients examined within three months of the onset of symptoms. The patients ranged in age from 22 to 82 years, with an average age of 60 years. Of the 172 eyes, 118 (69%) developed no retinal or vitreous complications. Retinal tears occurred in 14 eyes (8%) and vitreous or retinal hemorrhages occurred in 36 eyes (21%). Seventeen patients (11%) who had acute symptomatic posterior vitreous detachment in one eye later developed acute symptomatic posterior vitreous detachment in the fellow eye. The second posterior vitreous detachment developed within two years of the first one in 15 eyes (88%). In 13 patients (76%), the second eye responded in the same manner to the posterior vitreous detachment as had the first, that is, ten pairs of eyes had no further complications, two pairs had retinal or vitreous hemorrhages, and one pair had retinal breaks.

Acute Disease↗

Idiopathic macular holes.

We monitored 132 patients (148 eyes) with idiopathic, full-thickness macular holes for a mean of 52 months. Ninety-six of the patients were women and 61 were in their 60s. The initial sizes of the macular holes correlated highly with initial visual acuity (P less than .0001). Although most macular holes enlarged during the study, long-term visual acuity was stable. Although these patients had a significantly (P less than .05) higher prevalence of cardiovascular disease, the incidences of hysterectomies and estrogen supplements were not unusually high. Seventy-one patients had some type of pigment epithelial disease (P less than .05).

Adult↗

Degenerative retinoschisis with giant outer layer breaks and retinal detachment.

Five unusual cases of retinal detachment were caused by giant (more than 90 degrees) posterior breaks in the outer layer of degenerative retinoschisis. All retinas were successfully reattached by a variety of surgical techniques. The two cases managed with scleral buckling required subsequent buckle removal because of macular distortion. Treatment with cryotherapy or laser, together with intraocular air and postoperative positioning, gave better anatomic results.

Female↗

Retinal tacks.

An improved retinal tack and applicator can be used to fix the retina to the wall of the eye mechanically. The system consists of a small (1 X 2.7 mm) stainless steel tack with a blade-like tip and a forked applicator that can grasp the tack securely from any position. Two eyes with complex detachments with fixed rolled retinas could not have been repaired without the help of retinal tacks. The advantages of the retinal tack system over other methods include ease of handling, insertion, and removal.

Adult↗

Vitrectomy without scleral buckling for primary rhegmatogenous retinal detachment.

Trans pars plana vitrectomy with air-fluid exchange was performed on 29 selected cases of primary rhegmatogenous retinal detachment in which scleral buckling would be the usual surgical approach. The group contained 20 phakic eyes, two aphakic eyes, and seven pseudophakic eyes; the macula was detached preoperatively in 17 eyes (66%). The reattachment rate after one operation was 79% (23 of 29 eyes); after two operations this increased to 93% (27 of 29 eyes). Visual acuities of 20/50 or better were achieved in 22 of 27 successfully treated cases (81%). Vitrectomy without scleral buckling may allow retinal reattachment with excellent visual results in selected cases of primary rhegmatogenous retinal detachment.

Adolescent↗

Effect of scleral buckling on vector forces caused by epiretinal membranes.

Epiretinal membranes exert a perpendicular force on the retina that is directed toward the center of the vitreous cavity and tends to elevate the retina from the retinal pigment epithelium. A scleral buckle changes the eye wall from concave to convex and reverses the direction of the vector force oriented perpendicular to the eye wall. Therefore, when a scleral buckle is used, the force from an epiretinal membrane pulls the retina toward the retinal pigment epithelium instead of causing retinal detachment.

Eye↗

Experimental transvitreal cyanoacrylate retinopexy.

We used an experimental rabbit model of rhegmatogenous retinal detachment to compare the onset, quality, and duration of chorioretinal adhesions obtained by transvitreal application of N-butyl-2-cyanoacrylate mixed with iophendylate with those obtained by transscleral retinal cryopexy. The chorioretinal adhesions produced by the cyanoacrylate tissue adhesive were immediate in onset, stronger, and long lasting.

Animals↗

Rhegmatogenous retinal detachment after neodymium-YAG laser capsulotomy in phakic and pseudophakic eyes.

A retrospective study of 18 eyes in 17 patients with rhegmatogenous retinal detachments after neodymium-YAG laser posterior capsulotomy was performed to determine operative settings and to describe anatomic changes after the procedure in an effort to assess their relationship to subsequent retinal detachment. The laser energy required to create a capsulotomy did not appear to be excessive and the capsulotomy openings were not unusually large. The time between YAG capsulotomy and diagnosis of retinal detachment ranged from four to 82 weeks (mean, 28 weeks). The characteristics of the retinal detachments were similar to those after routine cataract extraction. Retinal reattachment surgery was ultimately successful in all 18 eyes. Both YAG laser and knife-needle posterior capsulotomies may increase the risk of subsequent rhegmatogenous retinal detachment as a result of opening the capsule.

Adult↗

The Lincoff temporary balloon buckle.

The Lincoff temporary balloon buckle is an equally effective alternative to more conventional techniques in the management of selected retinal detachments. We used this technique in the management of 45 selected primary retinal detachments operated on since Nov. 22, 1980. Initial complete retinal flattening was achieved in 42 eyes (93%). Two of the three eyes that initially did not show complete flattening ultimately went on to do well without further surgery. Redetachment occurred in three of the five aphakic eyes (60%) and in four of the 36 phakic eyes (11%). None of the retinas in the four eyes with intraocular lenses redetached. Conventional scleral buckling techniques were used in the one case of initial failure and in the seven cases of redetachment for a final success rate of 98% after an average follow-up of 13 months.

Adult↗