Spherical aberration

Spherical aberration

A common higher-order aberration of lenses or the eye that causes glare and halos around lights at night.

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Part of Speech: noun
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Industry/Domain: Health care
Category: Optometry
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Related terms

spherical aberration

Physics; General physics

The mirror or lens, causing image distortion in shape.

spherical aberration

Earth science; Mapping science

The focusing of rays from a point source on the optical axis into points whose distance from the focal plane varies as the angle at which the rays entered the optical system, with ...

spherical aberration

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A common higher-order aberration of lenses or the eye that causes glare and halos around lights at night.

spherical aberration

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Variation in focal length of a lens from center to edge due to its spherical shape.

spherical aberration

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lens fault which causes loss of image definition at the image plane. Its affects are reduced by stopping down.

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a defect seen in images that is caused by the objective not being exactly shaped (e.g., an objective mirror not being exactly parabolic) so that not all of the light is focussed ...

ophthalmoscope

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An optical instrument used to examine the external and internal parts of the eye, particularly the media and the fundus.

pantoscopic angle

Eyewear; Optometry

1. Angle in the vertical plane between the optical axis of a spectacle lens and the visual axis of the eye in the primary position, usually taken to be the horizontal. 2. Angle ...