. Refraction and muscular imbalance, as simplified through the use of the ski-optometer. 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. Fig. 16—The phorometer handle placed verticaUy, de-notes vertical muscles are undergoing te
. Refraction and muscular imbalance, as simplified through the use of the ski-optometer. 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. Fig. 16—The phorometer handle placed verticaUy, de-notes vertical muscles are undergoing test for right orleft hypherphoria—as indicated by R. H. or L. H. Instead of memorizing a vast number ofrules essential where trial case prisms areemployed for testing ocular muscles, thepointer of the phorometer indicates not onlythe degree on the red scale, but the presence ofright hyperphoria (R. H.) or left hyper-phoria, (L. H.). Fig. 17—The horizontal streak caused by Maddox rod bisecting muscle testing spotlight for vertical imbalance, as patient should see it. Assuming that the patient finds that thestreak cuts through the point of light, the re- [49] Refraction and Muscular Imbalance
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