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Biomedical subjects

G R Hampton

Publications and source records attributed to G R Hampton.

12 recordsLinked to original sources
PubMed1989

Photocoagulation using the Eisner cone.

Thirteen patients with clinical or subclinical retinal detachments were treated with photocoagulation with the aid of a device for scleral depression and the three mirror contact lens. The Eisner cone has proven helpful in achieving clinically white retinal burns at the margins of retinal breaks by displacing subretinal fluid at the time of treatment. Patients selected for treatment had adequate pigmentation for a good photocoagulation response, nearly clear ocular media, and minimal vitreo retinal traction. Extent of retinal detachment was not a determinant, but minimal retinal elevation at break locations proved beneficial. No immediate flattening or adhesion of the retina was seen on release of scleral depression at the time of photocoagulation. White clinical burns remained visible. In 12 of 13 patients the retina was in apposition to the retinal pigment epithelium around the breaks at the first post-treatment examination. The remaining subretinal fluid absorbed in even the most extensive detachment in 2 weeks. One patient with multiple breaks at the equator failed to respond to this technique and required a scleral buckle.

Aged↗
PubMed1988

Hemorrhagic peripheral pigment epithelial disease.

Hemorrhage under the retinal pigment epithelium and neurosensory retina occurred in the temporal periphery of ten patients with aging macular degeneration and one patient with histoplasmosis syndrome. The macula was not the source of bleeding. Peripheral subretinal neovascularization, commonly seen histopathologically, may be the cause. The visual recovery was poor, and most patients failed to regain lost vision once peripheral hemorrhage occurred. The differential diagnosis includes retinal detachment, uveal effusion, hemorrhagic retinoschisis, choroidal melanoma, and metastatic tumor.

Aged↗
PubMed1987

Argon endophotocoagulation with indirect ophthalmoscopy.

Argon endophotocoagulation may not be possible in some eyes due to the poor view afforded by the operating microscope. This limitation is avoided by viewing through argon filter goggles with the indirect ophthalmoscope while applying treatment with the endophotocoagulation argon laser probe through a pars plana entry site. This method has proved particularly helpful in the gas-filled eye, for treatment over a preexisting scleral buckle, or for a more complete peripheral panretinal photocoagulation.

Eye Protective Devices↗
PubMed1986

Analysis of monochromatic green argon-laser treatment for age-related macular degeneration.

A retrospective evaluation of 61 consecutive age-related disciform macular degeneration patients who received green argon-laser photocoagulation was done to evaluate the visual results and to search for characteristics of the presenting lesion that correlated with prognosis. For subretinal new vessels within 200 micron of the foveal avascular center, average pretreatment visual acuity was 20/80 and post-treatment 20/200. Twenty-eight percent improved, 36% stabilized, and 36% had worse acuity at last follow-up. Where new vessels were more than 200 micron from the foveal center, 36% improved, 20% stabilized, and 44% had worse acuity. The average pre- and post-treatment visual acuity for this group was 20/80. Overall, 36% required more than one treatment, and associated retinal vascular obliteration was noted in 31%. Hemorrhage over part of the neovascularization, turbid pigment epithelial detachment, and pigment epithelial detachment in the foveal avascular zone were signs that yielded the worst visual prognosis.

Aged↗
PubMed1979

A simple blue filter for the pocket flashlight.

I devised an easily constructed blue filter for use with a disposable pocket flashlight for detecting fluorescein staining in external disease that can be kept in the pocket and placed on and off the light with ease.

Fluoresceins↗