Scheiner experiment


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Schei·ner ex·per·i·ment

(shī'nĕr),
a demonstration of accommodation; through two minute holes in a card, separated from each other by less than the diameter of the pupil, the patient looks at a pin; at a short distance from the eye the pin appears double; as it is moved from the eye a point is found where it appears single, and beyond which it remains single for the emmetropic eye, but for the myopic eye it soon again becomes double.

Schei·ner ex·per·i·ment

(shī'ner eks-per'i-mĕnt)
A demonstration of accommodation; through two minute holes in a card, separated from each other by less than the diameter of the pupil, one looks at a pin; at a short distance from the eye the pin appears double; as it is moved from the eye a point is found where it appears single, and beyond which it remains single for the emmetropic eye, but for the myopic eye it soon again becomes double.

Scheiner,

Christoph, German physicist, 1575-1650.
Scheiner experiment - a demonstration of accommodation.