Biomedical subjects

M D Van Brocklin

Publications and source records attributed to M D Van Brocklin.

3 recordsLinked to original sources

PubMed1995

Capsulotomy.

The development of posterior capsule opacification secondary to extracapsular cataract extraction is a common occurrence. The patient complains of decreased visual acuity, glare, and sensitivity to light. The YAG laser posterior capsulotomy has become standard treatment for this anomaly: an opening is created in the opacified posterior capsule, which immediately improves visual acuity. This review describes the indications, preparation, procedure, follow-up, and complications associated with using a yttrium-aluminum-garnet (YAG) laser to perform capsulotomy.

Cataract↗

PubMed1982

The oculocardiac reflex: a review.

The oculocardiac reflex (OCR), which may result from traction or pressure on the globe, orbital contents, or extra ocular muscles, has been associated with cardiac arrests during ocular surgery. The pathways for this reflex have been established and several preventive methods including retrobulbar block and intravenous injection of atropine have been developed. These procedures, combined with recent advances in anesthesia, may have reduced the occurrence of fatal cardiac arrests caused by the elicitation of the reflex during ocular surgery, however, for numerous reasons, the reflex remains of optometric interest.

Animals↗

PubMed1979

The visual evoked responses: reliability revisited.

To examine the reliability of VER data, responses were obtained from 9 normal subjects. For steady state and transient displays, 7 consecutive VERs were obtained using 10, 25, 50, 75 and 100 ensemble averaged 384 ms activity samples each. Data from the 7 VERs were averaged by considering the first 3, the first 5, and all 7 VERs. For each display, maximum reliability was obtained by averaging at least 5 VERs with each consisting of 50 or more ensemble averaged samples. The steady state display produced more reliable data than did the transient display, but when each display system was used in a refraction format, the transient display produced refractions with narrower uncertainty ranges.

Adult↗