منابع مشابه
Entoptic phenomena and reproducibility of corneal striae following contact lens wear.
Vertical corneal striae distributed across the posterior cornea are one of the objective signs of clinically unacceptable corneal swelling (greater than 6%) resulting from contact lens wear. This study reports that corneal striae are repeatable both in configuration and location with different levels of hypoxia. In most instances entoptic phenomena result from the presence of these lines. The r...
متن کاملEntoptic evaluation of diabetic retinopathy.
PURPOSE Studies using optimized entoptic viewing of the parafoveal retinal vasculature have shown that normal subjects see their own capillaries with greater detail in the fovea than seen typically in fluorescein angiography. The authors have extended these investigations to persons with diabetes to evaluate the sensitivity, specificity, and accuracy with which they can detect and locate their ...
متن کاملThe extraordinarily rapid disappearance of entoptic images.
It has been known for more than 40 years that images fade from perception when they are kept at the same position on the retina by abrogating eye movements. Although aspects of this phenomenon were described earlier, the use of close-fitting contact lenses in the 1950s made possible a series of detailed observations on eye movements and visual continuity. In the intervening decades, many invest...
متن کاملEntoptic image quality of the retinal vasculature
Spatial details of entoptically visible retinal vessels were investigated using transcleral and Maxwellian-view stimulators. Nine normal subjects provided detailed drawings of the entoptic images which were digitized and superimposed onto digitized fundus photographs and fluorescein angiograms from the same eyes. Subjects also used a tracing method to locate visible entoptic features. The trans...
متن کاملOrigin of the foveal granular pattern in entoptic viewing.
PURPOSE To investigate the controversial origin of the foveal granular pattern at the center of the entoptic Purkinje vessel shadows. Both phenomena may be vividly elicited by oscillating a focused spot of light across the scleral surface of the eye in a circumferential direction. METHODS The site and pattern of oscillation of the light spot were varied and were correlated with the appearance...
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ژورنال
عنوان ژورنال: Proceedings of the Royal Society of Medicine
سال: 1930
ISSN: 0035-9157
DOI: 10.1177/003591573002400111