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4732148 |
Method for performing ophthalmic laser surgery
The invention contemplates controlled ablation of the cornea, using ultraviolet laser radiation, wherein irradiated flux density and exposure time are so controlled as to achieve desired depth of...
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4732466 |
Fundus camera
An optical system for forming an image of the retina of the human eye. The system includes a rotating drum having transmission/receiving slit pairs formed thereon. The rotation of the drum scans an...
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4707090 |
Objective refractor for the eye
An objective refractor for the eye is disclosed in which knife-edge optics are utilized. The knife-edge optics cause characteristic illumination of the retina so that components of sphere and...
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4702576 |
Ocular scattering analyzer
A method and apparatus for non-invasive in vivo inspection of ocular tissue wherein a laser provides a low power, coherent and uniform output beam of light which is guided through the optical...
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4684227 |
Binocular indirect ophthalmoscope
A binocular indirect ophthalmoscope is disclosed in which the optical observation axes from the examiner's pupils to the patient's pupil and the optical illumination axis from an illumination...
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4679917 |
Device for measuring intraocular light scatter
A novel optical device and method for measuring intraocular light scatter in a human vision system of a subject is described which comprises first and second light sources of respective...
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4669837 |
Ophthalmoscope with laser photocoagulator
An ophthalmic microscope combined with a laser photocoagulator and a binocular comprising a first telescopic tubular section connected to the binocular and a second tubular section slideably...
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4669839 |
Optical system for therapeutic use of laser light
A combined observation and laser therapy instrument having an optical system which is fully compensated for the difference in focus of the laser radiation and the observation light.
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4662731 |
Apparatus for examination of the innermost part of an eye
A microscope, whose ocular tubes receive light that is reflected by the blind spot or another selected portion in the innermost part of a human eye in response to illumination by a flash unit or a...
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4650300 |
Luminous source for measuring device of the ocular parameters of a subject
Luminous source of device for measuring, by means of corneal reflections, the ocular parameters of a subject. The source comprises a first extended emitting zone globally annular adapted to produce...
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4620318 |
Fovea-centered eye fundus scanner
An apparatus and method for identifying individuals through the ocular reflectance pattern from the fundus of the eye. A fixation target is provided for positioning and focusing the eye of an...
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4618230 |
Visual stimulator
A visual stimulator for light stimulation of a subject's eyes to obtain electroretinogram, electro-oculogram or visually evoked potential responses. The stimulator comprises a light directing means...
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4614411 |
Microscope with correlatable fixation target
The invention contemplates a binocular ophthalmological operation microscope with an optical fixation mark defined as effectively a point source of light, at the output end of an optical-fiber...
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4597392 |
Arrangement for measuring diffusing particles
An arrangement for measuring diffusing particles has at least one monochromatic radiation source and a light measuring device, as well as at least one material limited particle-permeable indicator...
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4597648 |
Keratometer
An improved keratometer instrument capable of measuring keratometric values of an eye is provided. An optical reference of a predetermined dimensional value is directed at the cornea of the eye and...
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4583830 |
Method and apparatus for measuring the shape of the eye
Two plane-parallel prisms are placed in the optical axis of the examined eye, fitting close to each other in a horizontal plane lying in the optical axis. The prisms are rotated relative to one...
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4582405 |
Ophthalmological combination instrument for diagnosis and treatment
An Nd:YAG laser of small size with a passive quality switch is combined with a slit-lamp instrument, to form an ophthalmological combination instrument for diagnosis and treatment. By a plurality...
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4577943 |
Method and apparatus for self-examination of the ocular globe
A method of self-examining the interior of the ocular globe by applying a light source to the outer surface of the lower eyelid, with the eye closed in order to permit the entrance of the light...
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4573778 |
Aqueous fluorophotometer
Fluorescence of the anterior chamber of an eye is determined by projecting a ribbon of light from the side of the eye through the anterior chamber in a direction generally perpendicular to the...
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4572628 |
Method of and apparatus for measuring radius
A method of measuring the radius of curvature of an object to be examined has a first procedure of projecting two pairs of light spots onto the object from different directions, a second procedure...
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4506962 |
Contact lens for observation or irradiation of the eye
The invention concerns contact lenses for observation or irradiation of the eye. The contact lens contains, for useful radiation, an entry face (1), a surface (2) reflecting by total reflection and...
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4504129 |
Photography adaptor assembly for a slit lamp examination unit
An assembly for adapting any of several different models of commercially-available slit lamps (10) into an optic examination unit capable of being used for routine eye examinations and also capable...
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4478499 |
Operation microscope with fixation device
The invention contemplates an operation microscope which incorporates an eye-fixation feature to enable a patient's eye (under microscope observation) to precisely maintain infinity focus and...
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4477159 |
Photocoagulator
A photocoagulator of the type having a light source device and an ophthalmoscope device. The light source device and the ophthalmoscope device are optically connected to each other by optical fiber...
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4461551 |
Portable ophthalmological instrument for selective examination of anterior or posterior regions of the eye
The invention contemplates structure for such combinable use of a portable ophthalmoscopy light and a portable stereomicroscope that components are readily convertible to selectively provide...
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4444476 |
Objective refractometers
An objective refractometer which enables a doctor to visually conduct optical pointings by projecting onto the retina of a patient an image coming from at least one point light source. The image is...
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4443075 |
Stabilized visual system
A stabilized visual system for directing a beam of energy, such as a laser beam, to a specific selected location in an eye and maintaining the beam in the selected location regardless of eye...
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4431279 |
Eye periphery portion illuminating device in an ophthalmologic instrument
In an eye periphery portion illuminating device in an ophthalmologic instrument having a chin supporting member and a forehead applying member for fixing a patient's face to the apparatus body, a...
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4423932 |
Eye fundus observing and photographing optical system
An eye fundus observing and photographing optical system has an objective lens including a main positive lens component and at least one positive lens component provided at that side of the main...
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4413890 |
Instrument for object detection of ocular diseases
An apparatus for objectively detecting ocular disorders adapted to the expedient examination of uncooperative patients generally comprises structures for collimating light into two predetermined...
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4411502 |
Ophthalmological instrument for examination of anterior and posterior portions of the eye
The invention contemplates an improved ophthalmological instrument wherein photo slit-lamp function (for anterior-chamber examination of an eye) are combined with fundus-camera functions (for...
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4407572 |
Keratometer
A keratometer is disclosed for remotely measuring corneal curvature in at least sphere, cylinder, and axis. Assuming the eye is precisely positioned from measurement, light sources are overlapped...
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4403841 |
Apparatus for examining anterior portions of the eye
The invention provides an ophthalmological technique and instrumentation for making better and more facile examinations of the anterior portion of an eye, by employing a known interference-contrast...
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4402601 |
Fundus camera-based retinal laser doppler velocimeter
A bidirectional laser Doppler velocimeter provides absolute measurement of the speed of red blood cells flowing in individual retinal vessels. A standard retinal camera is used, and the need for a...
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4397531 |
Eye closure discrimination system
A system for determining whether an eye within a field of view is closed for a predetermined period of time and for distinguishing between reflections from an open eye and any specular reflections...
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4394074 |
Fiberoptic-lighted optical apparatus
A fiberoptic-lighted optical apparatus for use in combination with a camera to photograph the convex surface of the iris of the eye for optimum depth of field and resolution, wherein the apparatus...
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4393366 |
Rotating beam ocular identification apparatus and method
In a method and apparatus for acquiring and recording an identification pattern from the reflectance of the fundus of an eye, a single light source is operable to produce a substantially columnar...
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4386831 |
Device for the measurement of electrical potentials of the eye
A corneal lens (1) is provided with a measurement electrode (4), a portion of which being flush with the concave surface of the lens or protruding from said surface, in such a manner to be in...
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4375320 |
Dual image corneal radius measurement
An instrument with a microscope brings into focus the cornea of a patient's eye for measurement of the radius of curvature of the cornea. Included is a pair of parallel spaced apart linear objects...
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4370033 |
Eyeball examining device
An eye examining device having a television pickup camera, an optical system for magnifying the eye ground or retina and focussing the image on said camera, a television monitor connected to the...
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4357088 |
Macula-disc camera with improved resolution
A macula-disc camera records the first aerial image of the patient's fundus to provide an actual increase in resolution of retinal detail not obtainable by merely magnifying this image with the...
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4346991 |
Method and apparatus for measuring retinal blood flow
Blood flow in a retinal blood vessel is measured by detecting the doppler shift imparted to two laser beams intersecting on a portion of the retinal vessel. Twin beams of laser radiation are...
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4327973 |
Ophthalmoscopic instrument for measuring eye defects
An ophthalmoscopic instrument for measuring eye defects, particularly cataract and flare, is described including a beam-splitter for splitting a light-beam into a first portion travelling through a...
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4323299 |
Wide field specular scanning device
The present invention relates to a wide field specular scanning device, especially intended for the examination under magnification of a selected area within the cornea of the eye. The device...
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4307944 |
Microscope
A microscope which is suitable for slit-lamp microscopy of the fundus without contact lens, stereo-chronoscopy, and laser photo-coagulation in the fundus and the anterior segment of the eye, is...
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4306778 |
Eye refractmeters using infrared rays
Eye refractmeter using infrared rays in which the target projecting optical system includes an aperture disc having a semicircular apertures disposed within a circle corresponding to the pupil of...
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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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