. International record of medicine . The other axis,however, may also be 105°, in which case the two axeswould not be correspondent or coincident. If, under thesecircumstances, the lines of the two axes be continued in anupward and inward direction, they would be found to inter-sect, and the angle at which they would intersect would beone of 30°. It is clear from the foregoing, then, that if theastigmatism in the two eyes be 15° from the vertical, it ispossible for the axes of the two eyes to be correspondent,or, when not correspondent, to intersect at the angle of 30°.When the axis of one eye
. International record of medicine . The other axis,however, may also be 105°, in which case the two axeswould not be correspondent or coincident. If, under thesecircumstances, the lines of the two axes be continued in anupward and inward direction, they would be found to inter-sect, and the angle at which they would intersect would beone of 30°. It is clear from the foregoing, then, that if theastigmatism in the two eyes be 15° from the vertical, it ispossible for the axes of the two eyes to be correspondent,or, when not correspondent, to intersect at the angle of 30°.When the axis of one eye is 135° or 45°, that of the fellowis correspondent or at right angles. The three general con-ditions that are possible, then, for the axes in the two eyesare, first, correspondence or coincidence ; second, an angleof 30°; third, an angle of 90°. The following are the possible individual positions insimple hyperopic astigmatism in both eyes: July 2, 1892.] CLAIBORNE: THE AXIS OF ASTIGMATIC GLASSES. ; +i05\ +135. +90internationalrec56wash
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectmedicine, bookyear186
