. Refraction and muscular imbalance, as simplified through the use of the ski-optometer. y distance will then register in milli-meters on the scale of measurements for eacheye separately. If the Ski-optometer is cor-rectly adjusted, the patient is securely held inposition, the cumbersome trial-frame beingentirely eliminated. Rigidity of Construction Illustration on following page (Fig. 11a)shows the reinforced double bearing armswhich hold the Ski-optometer lens batteries attwo points. This eliminates possibility of theinstrument getting out of alignment, and pre-vents wabbling or loose workin
. Refraction and muscular imbalance, as simplified through the use of the ski-optometer. y distance will then register in milli-meters on the scale of measurements for eacheye separately. If the Ski-optometer is cor-rectly adjusted, the patient is securely held inposition, the cumbersome trial-frame beingentirely eliminated. Rigidity of Construction Illustration on following page (Fig. 11a)shows the reinforced double bearing armswhich hold the Ski-optometer lens batteries attwo points. This eliminates possibility of theinstrument getting out of alignment, and pre-vents wabbling or loose working parts. The broad horizontal slides shown in thecut, move in and out independently so thatthe pupillary distance is obtained for each eyeseparately by turning the pinioned handle oneither side of the instrument. The scale de-notes in millimeters the from the median [31] Refraction and Muscular Imbalance line of the nose outward, the total of bothscales being the patients pupillary 11 a also serves to show the staunch con-struction of the base of the Handles Controlling Pupillary Distance for Each Eye Separately Fig. 11A—Showing staunch construction of How TO Place the Ski-optometer in Position The patient should be placed in a comfort-able position with chin up, as though look-ing at a distant object. The instrument shouldthen be raised or lowered by the adjustableratchet wheel of the bracket. The wallbracket gives best results when suspendedfrom the wall, back of the patient, as shownon page 135. This bracket should be placedabout ten inches above the head of the aver- [32] Refraction and Muscular Imbalance age patient. When the Ski-optometer isplaced in position for use, its lower edge willbarely touch the patients cheeks. It is some-times advisable to request the patient to light-ly press toward the face the horizontal barsupporting the instrument. Particularlygood results are secured where a chair witha head-rest is
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