Matches 101 - 150 out of 435 < 1 2 3 4 5 6 7 8 9 >
Match Document Document Title
6540356 Instrument and a method for measuring aberration of human eyes  
The present invention discloses an apparatus and a method for measuring aberrations in the human eye by utilizing the tracking of rays of light to measure the aberration in the human eye. The...
6523955 Method for improving optic perceptive faculty by modifying the retinal image  
In an electronic image enhancement system, a reflex image is scanned in the interior of the eye. After modification by a processor, the image is projected back into the eye along the same path, and...
6511180 Determination of ocular refraction from wavefront aberration data and design of optimum customized correction  
Ocular refraction is determined from wavefront aberration data, and an optimum customized correction is designed. The eye's wave aberration is measured by using a detector such as a Shack-Hartmann...
6487368 Fundus photographing device  
A fundus photographing device for conducting infrared fluorescence photography on a fundus of an examinee's eye after intravenously injecting a fluorescent agent which emits fluorescence of an...
6460997 Apparatus and method for objective measurements of optical systems using wavefront analysis  
An apparatus for determining aberrations of an eye includes a patient head rest allowing for positioning adjustment. The patient head rest is operable with an optical table having a base. The base...
6456787 Eye fundus camera  
An eye fundus camera includes mainly an illumination optical system, a photography optical system, a photography switch, a controller, and a display. The photography optical system includes a first...
6454411 Method and apparatus for direct projection of an image onto a human retina  
An apparatus for directly projecting an image onto a retina includes an optical source for generating a light beam to be focused on a retina. A projection device sweeps the light beam along the...
6439720 Method and apparatus for measuring optical aberrations of the human eye  
An apparatus for measuring optical aberrations of the human eye wherein the person positions his or her eye on an optical axis of the apparatus and looks at an illuminated target on the optical...
6411839 Fundus blood vessel examination apparatus  
A blood vessel examination apparatus includes a presentation device for presenting a fixation reference mark to the eye to be examined, an irradiation device for irradiating a blood vessel on the...
6327375 Ophthalmologic phototaking apparatus  
The present invention relates to an ophthalmologic phototaking apparatus having an illuminating system for illuminating an eye to be examined, a phototaking system for phototaking the image of the...
6276800 System for modeling a wavefront using sheared phase shifts  
A device for imaging a wavefront to determine the optical properties of an eye includes a light source for directing an input light beam into the eye. Corrective optics focus this input beam onto a...
6250761 Retinoscope  
A spot retinoscope is used to assess a refractive error of an eye, and has viewing means (11, 12) for viewing the eye under examination, and projection means (6, 9) for directing a beam of light...
6139150 Compact visual field tester  
A visual field tester which measures the visual field of a patient's eye, which visual field tester includes: (a) an optical radiation source having an entrance pupil plane, which optical radiation...
6141092 Method and apparatus for measuring a flicker level  
Disclosed is a method for measuring a flicker level. The method includes the steps of applying a first voltage to a liquid crystal display panel, the LCD panel including liquid crystal material and...
6120444 Noncontact tonometer capable of measuring intraocular tension by optically detecting deformation of cornea caused by air current  
A noncontact tonometer comprises an air current blowing means for blowing an air current against an eye, a cornea deformation measuring means for optically measuring a change in the shape of the...
6099125 Coaxial spatially resolved refractometer  
A refractometer provides a reference path coaxial with a measurement path and thereby simplifies construction by reducing the number of parts and simplifies maintenance by halving the number of...
6079830 Eye measuring apparatus having signal processing means for calculating eye information  
An eye measuring apparatus which, even if it is of the portable type in which it is difficult to maintain alignment, can effect accurate measurement without requiring a high skill of operation...
6076929 Microscope, including automatic ocular adaptation  
The invention concerns a microscope, in particular an operating microscope with a remote controlled adjustment system (32) for an ocular (8); the adjustment system preferably facilitates automatic...
6056404 Ophthalmic apparatus  
An ophthalmic apparatus for examining or measuring an eye to be examined, having an alignment optical system for aligning a position of the eye and that of a measuring system so as to be the...
6053614 Ophthalmic measuring apparatus with improved alignment  
An ophthalmic measuring apparatus in one aspect of the invention for examining the crystalline lens of an eye having a measuring unit which projects a measuring light beam on the crystalline lens...
6033073 Visual training system and apparatus for vision correction, especially for various forms of strabismus ("crossed" eyes)  
A vision correction apparatus and system for correcting various forms of strabismus. The apparatus has a viewing mechanism for viewing images, a dynamic stimulus device to be engaged or disengaged...
6022108 Opthalmic apparatus for judging alignment conditions based on target images  
An ophthalmic apparatus having measurement device for inspection or measurement, and bringing the measurement device into the predetermined positional relationships relative to an eye to be...
6007203 Process of assessment of ocular dysfunctions and implementation devices of this process  
Process of assessment of ocular dysfunctions, characterized in that the patient's eye (1) is placed to a previously defined distance from a lightening glare source (3), so that he can visualize a...
5993000 Display device  
A display device provides a virtual image for eyes of an observer. The display has a light source which emits light based on an image signal, scanner which scans the light, an eyepiece optical...
5975699 Method and apparatus for simultaneously measuring the length and refractive error of an eye  
Embodiments of the present invention are method and apparatus for simultaneously measuring the length and refractive error of an eye, preferably in a non-contact mode. In particular, an embodiment...
5953101 Vision collimator  
A vision collimator for self-monitoring peripheral vision loss or central visual field limitation. The collimator includes a hand-held collimator housing having a viewing aperture for placement...
5912723 Method and apparatus for early detection of glaucoma  
A diagnostic test for glaucoma which preferably uses four types of frequency doubled illusion patterns to determine the existence of glaucomatous damage in different regions of the eye. The four...
5907388 Ophthalmic measurement apparatus having plural pairs of photoreceiving elements  
An ophthalmic measurement apparatus for measuring a refractive power of an eye to be examined, the apparatus comprises slit projecting optical system for scanning a fundus of the eye by a slit...
5900923 Patient simulator eye dilation device  
A human eye dilation simulator is provided for use in a medical patient simulation mannequin. The eye simulator's pupils dilate and constrict in response to light stimuli, and physiological...
5892567 Optometric apparatus capable of simultaneously displaying a plurality of readings taken from different measurements of an eye  
The invention relates to an optometric apparatus the operation of which is not troublesome, and which is capable of effecting examination with high efficiency. An optometric apparatus for obtaining...
5889577 Optical apparatus or apparatus for detecting direction of line of sight, and various kinds of same apparatus using the same  
An optical apparatus includes a pupil illuminator for illuminating the pupil of an eye of an individual, an imager for obtaining an image of the pupil and an image of the cornea of the eye, a...
5886767 Keratometry system and method for measuring physical parameters of the cornea  
This invention relates to certain improvements in the art of keratometry and, more particularly, to the use of television techniques to determine the shape of the corneal surface of an eye in...
5875019 System for the determination, the evaluation and the control of the refractive and accommodative status of the eye  
The system for the determination, the evaluation and the control of the refractive and accommodative status of the eye according to the present invention includes: a scanner (AN) to be placed...
5872614 Eye refractive power measurement apparatus  
A type of eye refractive power measurement apparatus is capable of measuring the refractive power of left and right eyes through a common measurement optical system and without movement of the...
5871455 Ophthalmic apparatus  
An ophthalmic apparatus having a smaller size while guaranteeing a required optical performance from each optical system component is provided. The ophthalmic apparatus includes a fogging optical...
5870168 Vision-testing device  
A vision-testing device for examining the crepuscular vision, which has several visual signs which can be placed at random into the beam path, and a glare light source, all in a closed housing. The...
5867249 Ophthalmological analyzer  
The present invention relates to an ophthalmological analyzer, and an object of the present invention is to provide an ophthalmological analyzer capable of making information on the shape of an...
5867250 Apparatus and method for optically mapping front and back surface topographies of an object  
Apparatus for determining the topography of a surface of an ophthalmic object comprising a projection branch for projecting along a first optical axis a projected structured light pattern onto the...
5861940 Eye detection system for providing eye gaze tracking  
An eye detection system comprises a source, such as an infrared laser diodes for emitting a divergent beam of infrared radiation. A spatial light modulator is controlled so as to act as a deflector...
5844660 Objectives refraction measuring apparatus  
An objective refraction measurement apparatus includes a separate chart having a pair of charts arranged separately, an optical system for projecting the separate chart to an eye to be examined...
5844659 Opthalmic apparatus for measuring a refractive power of an eye to be examined  
An ophthalmic apparatus for measuring a refractive power of an eye to be examined, the ophthalmic apparatus providing an alignment detecting device for detecting an alignment condition of the...
5828439 Ophthalmologic device for measuring eye refractive power  
Ophthalmologic apparatus and methods are disclosed that permit reliable measurement of the refractive power of an eye both after and during invasive eye surgery. The refractive-power measurement is...
5793469 Variable distance, variable test object sight testing apparatus  
Sight testing apparatus, in particular sight testing apparatus with a free through-view, for examining near-sightedness and far-sightedness and color and stereoscopic vision, can operate with test...
5790233 Device for keratometric measurements  
A the device for carrying out keratometric measurements has a beam splitter (9) which can be pivoted about a pivot axis (37) in a defined way. The beam splitter (9) serves for dividing and...
5786765 Apparatus for estimating the drowsiness level of a vehicle driver  
An apparatus for estimating a drowsiness level of a vehicle driver first prepares a frequency distribution of blink durations of the driver for a first predetermined period after the start of a...
5781275 Eye refractometer and eye refractive power measuring apparatus for electro-optically measuring the refractive power of the eye  
An eye refractometer includes a beam splitter arranged in front of an eye to be examined for splitting an optical path from the eye to be examined into an optical path for eye observing and an...
5777718 Eye refractometer  
An eye refractometer has two to three visual target systems provided for right and left eyes. Each of the visual target systems has a visual target and diopter varying device for making the visual...
5757462 Ophthalmic apparatus for photographing a section of an anterior part of an eye  
An ophthalmic apparatus for photographing a section of an anterior part of an eye having slit light projection optical system for projecting a slit light onto an anterior part of an eye to be...
5757461 Method for displaying a photographing point of a cornea in an apparatus for obtaining video images of corneal cells  
A method for displaying a photographing point of a cornea which is used in an apparatus for obtaining video images of corneal cells. The apparatus includes (a) first optical assembly having a video...
5740803 Locating the center of the entrance pupil of an eye after pupil dilation  
A method and system are provided for locating the center of the entrance pupil of an eye after the pupil thereof has been dilated. A first image of an eye is formed prior to pupil dilation. The...
Matches 101 - 150 out of 435 < 1 2 3 4 5 6 7 8 9 >