. Refraction and muscular imbalance, as simplified through the use of the ski-optometer. rial-caselenses and the use of a cumbersome trialframe. The time-saving thus effected enablesthe refractionist to include a muscle test inevery examination and without tiring the pa-tient—a consideration of the utmost import-ance. Binocular and Monocular Test The test for muscular imbalance may bedivided in tw^o parts. First, binocular test,or combined muscle test of the two eyes; sec-ond, monocular test, or muscle test of eacheye separately. The latter does not signifythe shutting out of vision or closing
. Refraction and muscular imbalance, as simplified through the use of the ski-optometer. rial-caselenses and the use of a cumbersome trialframe. The time-saving thus effected enablesthe refractionist to include a muscle test inevery examination and without tiring the pa-tient—a consideration of the utmost import-ance. Binocular and Monocular Test The test for muscular imbalance may bedivided in tw^o parts. First, binocular test,or combined muscle test of the two eyes; sec-ond, monocular test, or muscle test of eacheye separately. The latter does not signifythe shutting out of vision or closing off ofeither eye, since muscular imbalance can onlybe determined when both eyes are two tests are fully explained in the fol-lowing chapter. [47] Chapter VI1 THE BINOCULAR MUSCLE TEST Made with the Maddox Rod and Phorometer T\ IRECTING the patients attention to theusual muscle testing spot of light, the redMaddox rod should be placed in operativeposition before the eye, with the single whiteline or indicator on red zero (Fig. IS). Therods now lie in a vertical Fig. 15—The Maddox rods placed vertically denote test for right or left hyperphoria, causing a horizontal streak to be seen by patient. The pointer of the phorometer should like-wise be set on the neutral line of the red scale,causing the handle to point upward (). A distance point of light and a redstreak laying in a horizontal position shouldnow be seen by the patient. [48] Refraction and Muscular Imbalance
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