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Biomedical subjects

A C Bird

Publications and source records attributed to A C Bird.

At least 325 records · Page 18Linked to original sources
PubMed1975

Plasma vitamin A and beta-carotene in retinitis pigmentosa.

Plasma levels of vitamin A and beta-carotene were measured by spectrophotometry in 39 patients with genetically determined retinitis pigmentosa, No difference was found between the levels in these patients and the levels in a control group.

Adolescent↗
PubMed1975

Retinal macroaneurysms.

Twenty patients with retinal macroaneurysms were examined and observed for at least 9 months. All these patients were elderly and had evidence of hypertension or systemic vascular disease. Nineteen patients presented with loss of central vision and one patient was asymptomatic. Visual loss was due to macular haemorrhage in 13 patients and macular oedema in 6. Whereas the visual prognosis in patients with haemorrhage was good it was considerably poorer in the patients with macular oedema.

Age Factors↗
PubMed1975

Aphakic macular edema: incidence and pathogenesis.

In a prospective study, the incidence of cystoid macular edema for two groups of patients was found at six weeks following surgery. The first group who underwent cataract extraction had a 50 per cent incidence. The second group who underwent elective glaucoma surgery had no patient with cystoid macular endema. At six weeks, 16 per cent of those patients who had originally developed cystoid edema, had a visual acuity of 6/12 or less, with no other cause for the poor visual result. The two major differences between these two groups of patients were the actual cataract extraction, and the presence of postoperative vitreous inflammation. No factors were noted to cause persistence of the aphakic macular edema although the technique of cataract extraction and vascular disease were implicated.

Cataract Extraction↗