Ophthalmoscopic prism

An ophthalmoscopic prism (20,50) for example a gonioscope, has an optically transparent body (22,52), the distal end carries a viewing surface (28,58) preferably oriented perpendicularly to the optical axis (24,54) of the body, the proximal end of the prism carries a concave surface (26,56) having a...

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Bibliographische Detailangaben
Hauptverfasser:	WHALEN, PAUL C, GRAHAM, RAYMOND D, ERICKSON, PHILLIP J, HARRINGTON, PETER G
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	DIAGNOSIS HUMAN NECESSITIES HYGIENE IDENTIFICATION MEDICAL OR VETERINARY SCIENCE OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PHYSICS SURGERY
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	An ophthalmoscopic prism (20,50) for example a gonioscope, has an optically transparent body (22,52), the distal end carries a viewing surface (28,58) preferably oriented perpendicularly to the optical axis (24,54) of the body, the proximal end of the prism carries a concave surface (26,56) having a curvature similar to the curvature of the cornea of a patient. The proximal end has at least one planar surface extending outwardly and distally from a location adjacent the periphery of the concave surface. The body (22,52) has an index of refraction that provides total internal reflection to a viewer looking through the viewing surface even when the planar surface is at least partially wetted with a fluid.