eye cup


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cup

 [kup]
a depression or hollow.
glaucomatous cup a depression of the optic disk due to persistently increased intraocular pressure, broader and deeper than a physiologic cup, and occurring first at the temporal side of the disk.
physiologic cup excavation of optic disk.

eye cup

a small oval receptacle used to apply a liquid to the external eye.

eye cup

(ī kŭp)
A small oval receptacle used to apply a liquid to the external eye.
References in periodicals archive ?
us), a 10x42mm binocular featuring fully multi-coated optics and three-stage twist eye cups.
The standard 1% inch filter size can often be pushed in to the rubber eye cups on binoculars, although care will be needed to ensure that you don't scratch or otherwise damage the filter surface by holding it too close to your eyes (it is also only too easy for the filter to pop out and land in a patch of wet grass or on a hard concrete floor, so great care is essential).
Nikon also got the eye cups right--of all the models tested, these were our favorites, a turn-and-slide style with several indents for exact fit.
Designed for the way children play, the binocs feature rubberized grips, safety lanyard with break-away buckle, and flexible eye cups, and are waterproof--just in case.
Other features include phase-corrected roof prisms, M * multilayer lens coating and twist-up eye cups.
The binoculars are water resistant and have super soft rubber eye cups for compfort viewing - 12 months guarantee.
Bottles have flexible, easy-to-open, form-fitting eye cups with built-in drain holes that lead fluid away from the eye during rinsing.