A preliminary study on quantification of spontaneous echo contrast in superficial vein.

Many occlusive diseases of blood vessels in the body are known, including the eye. Spontaneous echo contrast observed by ultrasound in physiological blood stream is known as a phenomenon reflecting the aggregation and dissociation process of red blood cells, mainly studied by mock-flow experiments. High-frequency ultrasound equipment is a useful tool to detect delicate changes of echo contrast caused by ambient forces or even temperature.

Causes of blindness and the results of cataract surgical intervention in the Micronesian islands: a retrospective study.

Since 1983, we have delivered eye care to inhabitants of the Micronesia islands a total of 18 times over an 18-year period. Approximately 14,000 islanders were examined. We diagnosed a total of 1226 blind eyes and 1231 eyes with low vision.