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Biomedical subjects

B M Wright

Publications and source records attributed to B M Wright.

At least 55 records · Page 3Linked to original sources
PubMed1978

Variable focus spectacles.

The history of prostheses for presbyopia is reviewed with an account of the development of variable focus spectacles. They have fluid-filled cells, with one flexible wall on the back of the base lens. The curvature of the flexible wall can be varied by operating a bellows in one side-arm. Their use for presbyopia, aphakia, and glaucoma is considered. The spectacles are believed to have reached a stage where they are ready for commercial production.

Eyeglasses↗
PubMed1976

Measurement and reduction of occupational exposure to inhaled anaesthetics.

The occupational exposure of hospital staff to inhaled anaesthetics was investigated using a personal sampling device that provides a measure of the average concentrations breathed by a person over a period of time, as distinct from the spot sampling in the general environment. The anaesthetist's average exposure to nitrous oxide and halothane during complete operating sessions was twice that expected from simple dilution of the escaping gases by the operating room ventilation. The sampling technique was also used to evaluate the effect of (1) redirection of the waste gas outflow; (2) active scavenging connected to the piped vacuum system. Short-period studies under controlled conditions in the operating theatres and anaesthesia induction rooms showed that the anaesthetist's exposure could be reduced two- or fourfold by redirecting the outflow and another four- to sixfold by active scavenging. Exposures during complete operating sessions were reduced two- to seven-fold by scavenging.

Air Pollutants↗
PubMed1976

Cryosurgery for prostatic obstruction using liquid nitrous oxide.

The history of the use of liquid N2O for prostatic cryosurgery is briefly reviewed and an account given of a new simple instrument. Details are given of the first 3 operations and of the results of another 82 performed at a number of different centres. Relief of acute or chronic obstruction was obtained in about two-thirds of the patients, all of whom were elderly and unfit for conventional operations. There were no serious complications attributable to the operation and it was suggested that it would be justifiable to offer it as an alternative, to patients who are fit for conventional surgery.

Aged↗
PubMed1975

Unilateral clubbing in hemiplegia.

A study of clubbing, assessed by spherometer measurements of fingernail-skinfold angle, was made in recent and long-established hemiplegic elderly patients. This showed that clubbing developed in all digits studied and that it increased with the duration of the stroke. Clubbing did not correlate with the grip strength of the weakened hand.

Adult↗