. The refraction of the eye; including a complete treatise on ophthalmometry; . ^ can the patient do this,but, if his accommodative power is strong, he sometimes doesit with comfort. Hence the relief for a time from asthenopia 178 THE REFRACTION OF THE EYE sometimes in mixed astigmatism, even with simple minuscylindrical glasses. Incidentally, I might say, a case similar in effect to this iswhere a patient with simple hypermetropic astigmatism acceptsa simple myopic cylindrical glass. For example, say a patientshould wear a + 1 D. cyl., 90°, to correct a simple hyperme-tropic astigmatism of th
. The refraction of the eye; including a complete treatise on ophthalmometry; . ^ can the patient do this,but, if his accommodative power is strong, he sometimes doesit with comfort. Hence the relief for a time from asthenopia 178 THE REFRACTION OF THE EYE sometimes in mixed astigmatism, even with simple minuscylindrical glasses. Incidentally, I might say, a case similar in effect to this iswhere a patient with simple hypermetropic astigmatism acceptsa simple myopic cylindrical glass. For example, say a patientshould wear a + 1 D. cyl., 90°, to correct a simple hyperme-tropic astigmatism of that amount. Now instead of this hewill sometimes accept — ID. cyl., 180°, especially so if minus.
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