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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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

Health care; Optometry

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

spherical aberration

Photography; Lenses

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

spherical aberration

Photography; Professional photography

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

spherical aberration

Astronomy; General astronomy

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

Eyewear; Optometry

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 ...

optical material

Eyewear; Optometry

Transparent material capable of being manufactured into optical components.

optical radiation hazard

Eyewear; Optometry

Possibility of damage to the retina by optical radiation.

optical centre

Eyewear; Optometry

For practical purposes, the intersection of the optical axis with the front surface a lens.

ophthalmoscope

Optometry; Optometry

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

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