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Biomedical subjects

T C Salzano

Publications and source records attributed to T C Salzano.

5 recordsLinked to original sources

Vitreous surgery for macular holes.

BACKGROUND: To surgically treat patients with macular holes, the authors previously reported both anatomic (re-attachment) and visual success (2 lines of improvement) in a series of 52 eyes. They now have operated on an additional 118 eyes using similar techniques, for a total of 170 eyes. METHODS: After ophthalmologic examination and history, the authors operated on suitable patients. The surgical objectives included relief of all tangential traction and retinal tamponade with intraocular gas. All eyes were followed for at least 6 months postoperatively. RESULTS: In the total population of 170 eyes, anatomic success was achieved in 73% and vision improved at least two lines in 55%. Twenty-nine percent (49/170) of patients had a visual acuity of 20/40 or better at last examination. Patients with symptoms of less than 6 months' duration managed better than those with symptoms of longer duration (P = 0.3001). In the former group of 66 eyes, anatomic success was achieved in 80% (n = 53), whereas visual acuity improved at least two lines in 68% (n = 45) and at least four lines in 55% (n = 36). CONCLUSIONS: The authors suggest that macular hole surgery may provide meaningful improvement in visual acuity in most patients, especially in those whose symptoms are of less than 6 months' duration.

Aged

Expanded indications for pneumatic retinopexy.

The Collaborative Pneumatic Retinopexy Study evaluated retinal detachments (RDs) secondary to one break or group of breaks no larger than 1 clock hour located within the superior 8 clock hours of the fundus. Eyes with prominent proliferative vitreoretinopathy (PVR) were excluded. Forty eyes which exceed these criteria and were treated with pneumatic retinopexy have been retrospectively evaluated to determine what preoperative conditions limit the application of pneumatic retinopexy. Multiple breaks in multiple quadrants, large tears up to 2.5 clock hours in size, and RDs associated with a moderate degree of PVR were successfully managed with pneumatic retinopexy. The greatest number of failures were due to inferior breaks. The overall success rate for pneumatic retinopexy was 75%. New breaks occurred in 12.5% of eyes, but all of these were successfully managed.

Humans

Pneumatic retinopexy. A collaborative report of the first 100 cases.

The preliminary experience of one surgeon, using pneumatic retinopexy for 20 consecutive cases of rhegmatogenous retinal detachment, was previously reported. The collaborative experience of six surgeons using pneumatic retinopexy for 100 cases is now reported. This series includes cases with pseudophakia, aphakia, macular detachment, macular breaks, vitreous hemorrhage, trauma, and old detachments. Initially, 91% were reattached, but seven recurrences yielded a 6-month follow-up cure rate of 84% with pneumatic retinopexy. With subsequent scleral buckling, 98% were reattached. Postoperative complications included proliferative vitreoretinopathy (3%), macular pucker (3%), and new/missed retinal breaks (7%). A review of the literature disclosed postoperative new/missed retinal breaks in nine series: 21, 3, 8, 4, 9, 7, 5, 4, and 13%. There were no cases of glaucoma, cataract, subretinal gas, endophthalmitis, or extension of the detachment into a previously attached macula. Pneumatic retinopexy offers the advantages of reduced tissue trauma, fewer complications, no hospitalization, and less expense. The major disadvantage is the need for postoperative positioning.

Cryosurgery

Argon endolaser.

We developed an endolaser probe that is capable of delivering argon laser light for photocoagulation of retinal breaks or vascular fronds. Energy is transmitted through a fiberoptic cord from a console outside of the surgical area to an endolaser probe inside the operating suite. The probe can be fired into fluid- or gas-filled media. With the use of this system, panretinal photocoagulation can be performed rapidly and conveniently during a vitrectomy procedure. We have also successfully managed posterior retinal tears and bleeding fibrovascular fronds with this system.

Argon

Role of the CO2 laser in chorioretino-iridocyclectomy.

Surgical extirpation of a uveal melanoma was performed by a sclerochorioretino iridocyclectomy using an externally focused CO2 laser. This was followed by a lens extraction and partial vitrectomy. The uveal melanoma proved to be of a mixed cell type. The minimal operative and postoperative hemorrhaging was attributed in part to the cauterizing cutting characteristics of the CO2 laser. Extensive coagulation necrosis produced by the CO2 laser precluded histopathologic evaluation of the resected tissue margin.

Aged