indirect ophthalmoscope


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Related to indirect ophthalmoscope: binocular indirect ophthalmoscope

ophthalmoscope

 [of-thal´mo-skōp]
an instrument for examining the interior of the eye.
direct ophthalmoscope one that produces an upright, or unreversed, image of approximately 15 times magnification. The direct ophthalmoscope is used to inspect the fundus of the eye, which is the back portion of the interior eyeball. Examination is best carried out in a darkened room. The examiner looks for changes in the color or pigment of the fundus, changes in the caliber and shape of retinal blood vessels, and any abnormalities in the macula lutea, the portion of the retina that receives and analyzes light only from the very center of the visual field. Macular degeneration and opacities of the lens can be seen through direct ophthalmoscopy.
A, Inspection of the eye with a direct ophthalmoscope. B, Structures that are visualized. From Polaski and Tatro, 1996.
indirect ophthalmoscope one that produces an inverted, or reversed, direct image of two to five times magnification. An indirect ophthalmoscope provides a stronger light source, a specially designed objective lens, and opportunity for stereoscopic inspection of the interior of the eyeball. It is invaluable for diagnosis and treatment of retinal tears, holes, and detachments. The pupils must be fully dilated for satisfactory indirect ophthalmoscopy.
scanning laser ophthalmoscope (SLO) an instrument for retinal imaging in which light from a low-power laser beam that scans the retina is reflected back to a sensor; the light detected by the sensor is used to create a full-color composite digital image.

in·di·rect oph·thal·mo·scope

a simple convex lens used in conjunction with light directed into the eye from a headlamp or mirror to form a virtual, inverted image of the ocular fundus.

indirect ophthalmoscope

an ophthalmoscope with a biconvex lens that produces a reversed inverted and magnified stereoscopic image.

in·di·rect oph·thal·mo·scope

(in'di-rekt' of-thal'mŏ-skōp)
An instrument designed to visualize the interior of the eye, with the instrument at arm's length from the subject's eye and the observer viewing an inverted image through a convex lens located between the instrument and the subject's eye.

ophthalmoscope

an instrument for examining the interior of the eye. It sends a bright, narrow beam of light through the lens of the eye, and contains a perforated mirror and lenses through which the veterinarian can examine interior parts of the eye. It is helpful in detecting possible disorders of the eyes, as well as disorders of other organs that are reflected in the condition of the eyes.

direct ophthalmoscope
one that produces an upright, or unreversed, image of approximately 15 times magnification.
indirect ophthalmoscope
one that produces an inverted, or reversed, direct image of two to five times magnification.
References in periodicals archive ?
These systems have a small package size for easy transport and offer the clinician a broad array of delivery devices including the TruFocus(tm) Laser Indirect Ophthalmoscope, portable Slit Lamp Adapters and a complete line of EndoProbe(R) devices.
Tenders are invited for Purchase of Video Indirect Ophthalmoscope qty: 1
Contract notice: Binocular indirect ophthalmoscope.
Tenders are invited for Purchase of indirect ophthalmoscope
Tenders are invited for Wireless Indirect Ophthalmoscope With 20 D Volk Lens , Specification As Per Annexure A
Virtual reality indirect ophthalmoscopes are available with pre-programmed virtual images of various retinal conditions to train registrars in the technique of indirect ophthalmoscopy, to recognise the pathology and to make retinal sketches.
Keeler, based in the UK, manufactures products such as direct and indirect ophthalmoscopes, non-contact tonometers and slit lamps, while Volk Optical, based in the USA, is a specialist in patented double aspherical optics.
The ophthalmic diagnostic equipment market includes perimeters, automatic and manual refractors, slit lamps, contact and non-contact tonometers, fundus cameras, automatic and manual lens meters, direct and indirect ophthalmoscopes, ultrasound equipment, corneal topography systems and other imaging systems.
Keywords: Contact lenses, Optical coherence tomographers, Fundus cameras,Slit lamps, Perimeters, Tonometers, Autorefractors and keratometers, Ophthalmic ultrasound systems, Binocular indirect ophthalmoscopes, Corneal topographers, Wavefront aberrometers, Soft contact lenses, Gas permeable contact lenses
This market includes: Optical Coherence, Tomographers, Fundus Cameras, Corneal Topographers, Slit lamps, Tonometers, Perimeters, Binocular Indirect Ophthalmoscopes, Ophthalmic Ultrasounds, Autorefractors and Keratometers and Wavefront Aberrometers.

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