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Article
October 1941

THE CARDINAL ANGLOMETER

Arch Ophthalmol. 1941;26(4):670-674. doi:10.1001/archopht.1941.00870160146013
Abstract

The cardinal anglometer is, as its name implies, an instrument for the measurement of the status of the ocular muscles not only in the primary position but in any selective direction of gaze at a distance of 13 inches (33 cm.) from the eyes. In addition, this instrument is intended to measure the visual or binocular status for the respective positions of gaze.

The instrument permits one to carry out tests in accordance with established principles and also by careful control and observation of the movements of the eyes. Due provision has been made for :

  1. Fixation of the head both in the erect position and in tilted positions.

  2. Controlled study of positions and movements of the eyes and of image responses, so that true and anomalous projections can be measured.

  3. Studies of the binocular status in definite and selective positions of gaze.

  4. Adjustment of the prism or filter holder to

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