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4304468 |
Eye refractometer having a viewing target projecting system
An eye refractometer including a measuring target projecting optical system for projecting a measuring target to a patient's eye using an infrared ray. A viewing target is provided in the...
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4283124 |
Eye fundus camera
An eye fundus camera illuminates the eye to be inspected with a light that does not cause dilation or contraction of the eye pupil. In the camera, a photographic system forms an image of the eye...
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4279478 |
Eye examining instrument
A fixation object for maintaining the direction of the line of vision of an eye to be examined and a bright test object movable in a plane conjugate with the fundus of the eye with respect to an...
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4270842 |
Optical system for forming an image of the retina
An optical system for forming an image of the retina of an eye which is to be examined. The optical system has two groups of lenses which cooperate to form the image. The first lens group is in...
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4266861 |
Eye fundus camera
An improved eye fundus camera for photographing the fundus of a patient's eye is disclosed. Three separate energy sources are provided which include a first source of a visible light wave length...
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4265519 |
Wide-angle ophthalmoscope
A wide-angle indirect ophthalmoscope that enables an operator to view the retina from the posterior pole to the equator as a single image. The ophthalmoscope has an observable field that can...
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4265518 |
Variable magnification apparatus having illumination compensating ability
Apparatus herein disclosed comprises a photographing system having an optical system of variable magnification and an illumination system having a light source for photographing and a light source...
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4257687 |
Eye examining instrument with photo-detecting system
An ophthalmoscopic instrument having an infrared image converter tube for observation and/or examination of an ocular fundus prior to recording an image thereof provided with a range finding device...
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4256385 |
Cornea-examining instrument
A cornea-examining instrument includes a plate-shaped examining element of a transparent material, which has at least one light-reflective formation on one end face thereof. The examining element...
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4253744 |
Optical system for light measurement of an eye fund
In a light measuring optical system for use in measurement of pulse waves in the artery at the eye fundus or oxygen saturation in the artery blood at the eye fundus, light for illuminating the eye...
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4249802 |
Ophthalmological instrument
An ophthalmological instrument having optical elements providing an examination light beam path and an illumination light beam path. The optical elements include an objective for producing an...
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4238142 |
Method and apparatus for examining and photographing the ocular fundus
An instrument for photographing the ocular fundus is aligned by using a physical aperture designed to permit illumination of only a small area of the optic disc for minimal patient awareness of...
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4235529 |
Apparatus for recording images of crystalline lens sections
Apparatus for taking photographs of crystalline lens sections including a slit illumination system and a photographing optical system which includes an optical axis inclined with respect to the...
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4219258 |
Illuminating device for use in a funduscopic apparatus
An illuminating device for use in an ophthalmoscopic photographing apparatus comprising an objective lens system arranged near an eye to be inspected in a main optical viewing path, a photographing...
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4213678 |
Scanning ophthalmoscope for examining the fundus of the eye
A scanning ophthalmoscope for repeatedly scanning a selected portion of an eye fundus has a laser source which produces a directed narrow-beam output and means for scanning the fundus with at least...
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4208107 |
Drugless eye examination system
A drugless eye examination system is disclosed that incorporates: an opti system for illuminating the retina of an eye, which has preferably been previously dilated by standard dark room or other...
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4200362 |
Ophthalmoscope with uniform illumination
Apparatus for viewing an eye fundus through a contact lens has an illuminating element that illuminates the fundus through the sclera. The illuminating element includes at least one fiber optic...
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4184752 |
Instrument illuminator
An illuminator including an incandescent lamp and strobe tube in a pivotable carrier adapted to selectively alternately position the lamp and tube in an identical single position of use, each being...
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4181407 |
Apparatus for automatically testing vision by phase measurements
Apparatus for automatically testing a patient's vision includes a target, at least one lens, and an eyepiece serially aligned along one optical path. A motorized drive circuit moves the target or...
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4166677 |
Illumination system for indirect ophthalmoscope
The invention relates to a lighting appliance for generating a light beam for indirect ophthalmoscopy which appliance comprises a housing with a beam outlet aperture through which the beam leaves...
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4135791 |
Reduced glare scanner
Method and apparatus for reduced glare observation of the eye fundus through optical lenses is accomplished by synchronized scanning illumination and observation of successive portions of the...
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4102565 |
Slit lamp microscope
A slit lamp microscope includes an illumination light source from which light is passed through two separate optical paths to the patient's eye. The first of the optical paths includes a slit mask...
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4067646 |
Eyeground inspecting contact lens
An eyeground inspecting contact lens adapted to be disposed in contact with the cornea of an eye to be inspected, in order that an illuminating light may be directed to the fundus of the eye so as...
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4065208 |
Ophthalmoscope
An ophthalmoscope for allowing an observer to clearly and easily view the retina of a patient's eye. The ophthalmoscope has a hollow body member with an objective portion attached to one end...
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4061423 |
Illumination system for ophthalmoscope
Disclosed are improvements in an illuminating system for an ophthalmoscope of the type employing transillumination through the sclera of the eye. One or more fiber optic bundles convey light from a...
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4056310 |
Method and device for ophthalmoscopy
A method and device for ophthalmoscopy for observing fundus oculi by a binocular ophthalmoscope through a contact lens arranged in contact with an eyeball to be observed, said method and device for...
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4033679 |
Gonioscope
A gonioscope for viewing the angle of the trabeculum and the drainage angle and related structures comprising a lens having a cylindrical surface and formed at its front end with four inclined...
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4015898 |
Upright wide angle stereo ophthalmoscope
An ophthalmoscope-microscope having an object lens at one end of a housing and an inverting, reversing and separating prism provided in the housing in the optical axis of the object lens, a...
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4007980 |
Device for the measurement of the size of an eye pupil
A device for measuring the size of an eye pupil, particularly with non-cooperating patients, has a body which contacts the eye and carries on it an illuminating light source, a series of light...
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3982827 |
Opthalmic instrument
An opthalmic biomicroscope for observing a narrow zone of a patient's eye has an optical axis traversing one of several sections of a flat semitransparent mirror serving to illuminate that zone...
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3966310 |
Pupillometer and method of use thereof
Apparatus for observing reaction of the pupil of an eye includes a first light source for generally illuminating the eye, and a second light source which may be selectively actuated to direct light...
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3963329 |
Small pupil binocular indirect ophthalmoscope
A binocular indirect ophthalmoscope of the type having a central reflecting prism and a pair of adjustable oculars. The instrument may be used in the examination of eyes having either normally...
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3954329 |
Wide-angle opthalmoscope employing transillumination
Apparatus for viewing an eye fundus through a contact lens has a lamp element that illuminates the fundus through the sclera. The lamp element preferably includes at least one fiber optic bundle...
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3944343 |
Light inclining accessory for slit lamp
A light inclining accessory for a slit lamp includes a multi-faceted mirror having a top segment for receiving an illumination beam from the slit lamp and directing the illumination beam...
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3944341 |
Wide-angle ophthalmoscope and fundus camera
A wide-angle indirect ophthalmoscope contains a contact lens that fits over a cornea and is surrounded by two rings of optical fibers for illumination of the eye fundus. The two rings of fibers are...
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3936161 |
Ophthalmoscope illumination arrangement
This application discloses an ophthalmoscope illumination arrangement including a bulb mounted in a special bulb carrier which is adapted to cooperate with the ophthalmoscope chassis so as to...
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3879113 |
PHOTO-REFRACTOMETER AND METHODS FOR OPHTHALMIC TESTING OF YOUNG CHILDREN
Because the retina of the normal eye is an imperfect absorber of light, a portion of the light that reaches the retina is reflected back through the lens. If one's eye is focussed at a point source...
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3830562 |
SLIT LAMP HAVING COMBINATION SLIT AND LAMP INTENSITY CONTROL DEVICE
A slit lamp including a combination control device for simultaneously varying the width of a slit in an illumination column of the slit lamp and the intensity of a light beam from a lamp in the...
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3797921 |
PHOTOGRAPHING APPARATUS FOR DETERMINING CORNEAL RADIUS
A camera by means of which a doctor can obtain a picture of the eye of a patient, having superimposed thereon one or more concentric circles, permitting determination by the doctor of the radius of...
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3791720 |
OPHTHALMOMETER HAVING ALTERNATIVE VIEWING AND MEASURING SYSTEMS AND INCLUDING AN IMPROVED ILLUMINATION SYSTEM
Ophthalmometer including a measuring circuit for measurement of the curvature of the cornea and contact lens curvatures with a built-in viewing circuit which is activated by the movement of a lever...
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3783874 |
METHOD AND APPARATUS FOR EFFECTING PHOTO-COAGULATION
1. Photo-coagulation apparatus comprising laser means having a pair of plane, parallel, reflective, opposite end surfaces, said laser means being actuable to emit a collimated beam of relatively...
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3780979 |
ADJUSTABLE FUNDUS ILLUMINATION
Method and apparatus are provided for wide angle illumination of the fundus of the eye. Even illumination of the fundus is obtained by adjustment of the input light to the optical fibers which...
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3776620 |
OPTHALMOMETER HAVING ALTERNATIVE VIEWING AND MEASURING SYSTEMS
Ophthalmometer including a measuring circuit for measurement of the curvature of the cornea and contact lens curvatures with a built-in viewing circuit which is activated by the movement of a lever...
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3770342 |
DEVICE FOR LIGHTING AND EXAMINING A CAVITY
A device for examining the inside of a cavity and, more particularly, for viewing or photographing the retina comprising a plurality of optical fibres cooperating with a light source, and an...
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3724932 |
EYE TRACKER AND METHOD
A technique and apparatus for two dimensional tracking of eye position. An infrared pattern is projected into the eye and measurements taken of the spatial separation of the first and fourth...
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3703176 |
SLIT LAMP PHOTOCOAGULATOR
A combination slit lamp and laser photocoagulator for treating eye disorders in which the laser is coupled to the slit lamp through an articulated arm. The slit lamp optics are arranged such that...
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3698099 |
OPHTHALMOSCOPES
An instrument for selectively performing direct and photographic ophthalmoscopy including a variable focus image-forming objective at one end of an elongated flexible illuminating and...
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3685887 |
INDIRECT OPHTHALMOSCOPE
A compact indirect ophthalmoscope, adapted to hand-held or mounting support, with a prefocused direct line illumination system, has an observing system including a right dihedral angle,...
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3684355 |
GLARE SUSCEPTIBILITY TESTER
A method and apparatus for testing the glare susceptibility of a subject. The technique includes presentation of a glare source and a target to the subject's view and then varying the relative...
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3663098 |
AUTOMATIC FOCUSING FOR OCULOMETERS
An automatic focusing apparatus for oculometers wherein a reflected corneal image is projected by a lens through an aperture of non-circular outline onto a detector. The detector circularly scans...
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