Did You Know...
...that to encourage use of his new invention, the shopping cart, market owner Sylvan Goldman hired fake shoppers to push the carts around his store in Oklahoma City? Seems his customers were reluctant to give up their hand-carried baskets.
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| Number | Title | Issue Date |
| 7407290 | Method of inspecting monocular diplopia and eye mark pattern for use in the same In order to examine a degree of monocular diplopia is easily examined in a quantitative manner, a plurality of circular eye marks are seen from a predetermined examination distance with a single eye of a patient to find a particular eye mark whose double vision imag... | 08/05/2008 |
| 7322699 | System and method for the non-contacting measurements of the eye Combined equipment for non-contacting determination of axial length (AL), anterior chamber depth (VKT) and corneal curvature (HHK) of the eye, are also important for the selection of the intraocular lens IOL to be implanted, particularly the selection of an intraocu... | 01/29/2008 |
| 5627612 | Ophthalmic apparatus having program storing means An ophthalmic apparatus for inspecting visual functions of eyes to be examined, providing an optical unit having ophthalmic windows, for respectively placing optical elements in the ophthalmic windows by switching, an object indicating unit for presenting... | 05/06/1997 |
| 5223865 | Method and apparatus for measuring visual function The inventive method and apparatus are based on the display of a striped target with constantly accurate contrast to the patient for finding a visual function disturbance associated with such eye diseases as glaucoma or diabetic repinopathy at their earli... | 06/29/1993 |
| 4679921 | Apparatus for eye examination An eye-examining apparatus comprises a first positive lens unit, a negative lens unit, a second positive lens unit, a third positive lens unit and a target mark arranged in the named order from the side of the examined eye. The third positive lens unit is... | 07/14/1987 |
| 4217048 | Viewfinder capable of adjusting diopter An improved eyepiece for a viewfinder of a single lens reflex camera is provided. This improved eyepiece is capable of adjusting both the diopter and astigmatism correction to the demands of the individual user. The eyepiece includes a negative meniscus l... | 08/12/1980 |
| 4179196 | Compact subjective refractive instrument A compact ophthalmic instrument for refraction of patient's eyes is obtained by substantial folding of the optical system. The optical system is folded in one location using a reflection means that moves to vary the location of a target image being viewed... | 12/18/1979 |
| 4113363 | Process and apparatus for astigmatic and spherical subjective testing of the eye An apparatus and process for determining subjective astigmatic and spherical prescription for the eye is disclosed. A target, consisting of a line of small angular divergence, is focused for maximum clarity by the adjustment of spherical optics, causing t... | 09/12/1978 |
| 4094592 | Ophthalmic examination chart projector Ophthalmic examination chart projector including a rotatable chart carrying disc and a mask plate which are co-axial with each other. A light source and a projecting lens assembly are provided for projecting one of the charts on the disc and one of the ma... | 06/13/1978 |
| 3947186 | Eye-test lens and method The invention is a test lens made to fit a standard optometrist's trial-lens frame. The lens is a crossed-cylinder astigmator of about &#b1; 5 diopter strength, preferably formed by cementing together a first planoconvex cylinder lens of about 5 diopter s... | 03/30/1976 |
| 3947097 | Process and apparatus for astigmatic and spherical subjective testing of the eye An apparatus and process for determining subjective astigmatic and spherical prescription for the eye is disclosed. A target, consisting of a straight line, is focused for maximum clarity by the adjustment of spherical optics, causing the line to become p... | 03/30/1976 |
