binocular (redirected from opera glass)

binocular /bin·oc·u·lar/ (bĭ-nok´u-ler)

1. pertaining to both eyes.

2. having two eyepieces, as in a microscope.

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bin·oc·u·lar (b-nky-lr, b-)

adj.

Adapted to the use of both eyes. Used of an optical instrument.

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Binocular

Both eyes accurately pointing to the same object.

Mentioned in: Vision Training

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binocular

[bīnok′yələr, bin-]

Etymology: L, bini + oculus, eye

1 pertaining to both eyes, especially regarding vision.

2 a microscope, telescope, or field glass that can accommodate viewing by both eyes.

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binocular

1. pertaining to both eyes.

2. having two eyepieces, as in a microscope.

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binocular field

the field of vision, simultaneously received by both eyes. Varies between animal species, depending on the placement of the eyes in the skull. Widest in the cat (90°), 60-70° in the horse and 15° in poultry.

Field of vision of predatory animals. By permission from Aspinall V, O'Reilly M, Introduction to Veterinary Anatomy and Physiology, Butterworth Heinemann, 2004

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binocular 

Pertaining to both eyes.

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binocular 

Pertaining to the use of the two eyes but without fusion or stereopsis. The term is primarily used in clinical testing and vision therapy in which different prisms are placed in front of each eye.