direct ophthalmoscope

ophthalmoscope /oph·thal·mo·scope/ (of-thal´mo-skōp) an instrument containing a perforated mirror and lenses used to examine the interior of the eye.

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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.

scanning laser ophthalmoscope  an instrument for retinal imaging in which the retina is scanned by a low-power laser and the reflected light is used to create a digital image.

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direct ophthalmoscope

n.

An instrument designed to visualize the interior of the eye, with the instrument relatively close to the subject's eye and the observer viewing an upright magnified image.

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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.

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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.