Biomedical subjects

W T Humphrey

Publications and source records attributed to W T Humphrey.

3 recordsLinked to original sources

PubMed1979

Choroidal hemangioma: Response to cryotherapy.

Choroidal hemangioma, a benign vascular tumor of the choroid, can frequently develop an effusive secondary retinal detachment. When such retinal detachment involves the macula, reduction in central vision occurs. Fluorescein angiography and radioactive prosphorus tests are helpful in accurately diagnosing choroidal hemangioma. Transscleral cryopexy, freeze-thaw-refreeze method, results in complete destruction and scarring of the choroidal hemangioma. Following treatment, subretinal fluid disappears, the macula becomes reattached, and central vision is restored.

Adult↗

PubMed1979

Central retinal artery spasm.

Central retinal artery spasm, a seldom witnessed ocular sign, has been recognized in one eye of a patient complaining of transient monocular blindness. Removal of an ulcerative atheromatous plaque of the carotid artery on the same side as the eye with central retinal artery spasm resulted in complete disappearance of symptoms. No other signs of ocular pathology were noted in addition to the central retinal artery spasm. Central retinal artery spasm occurring in both eyes simultaneously may be the mechanism explaining the visual loss of amaurosis fugax. Physiologic mechanisms associating brief episodes of monocular blindness and carotid artery obstructive disease with atherosclerosis are discussed. The possibility of central retinal artery spasm initiating occlusion of the same vessel is mentioned.

Arteriosclerosis↗

PubMed1978

Rhegmatogenous retinal detachment complicating diabetic retinopathy.

Retinal detachment complicating proliferative diabetic retinopathy is being recognized with increasing frequency. Although one type of detachment is tractional and requires vitrectomy for hopeful repair, the other variety of detachment is rhegmatogenous. The rhegmatogenous form of retinal detachment does not generally require the radical surgical approach of vitrectomy. However, because of the unusual nature of the retinal detachment , a standard encircling scleral buckling procedure does not suffice to correct the problem. The unusual characteristics of this form of retinal detachment are discussed, and the criteria for types of surgical repair are considered. A modification of scleral buckling procedure which has been successful in anatomically reattaching most rhegmatogenous retinal detachments is described. The complications resulting from surgery are reviewed along with methods to avoid complications.

Diabetic Retinopathy↗