 | Daniel Bennett St. John Roosa - 1894 - 728 lehte
...had previously suggested its use in conical cornea. The mirror was to be held two feet from the eye, and its inclination rapidly varied, so as to throw...to the perpendicular, and from opposite sides, in successive meridians. The pupil then shows a somewhat linear shadow in some meridians rather than others.... | |
 | Edwin Harding Lendon - 1902 - 82 lehte
...the ophthalmoscope much in the same way as for slight degrees of conical cornea. The observation is more easy if the optic disc is in the line of sight...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than in others.' Here we have... | |
 | 1913 - 374 lehte
...in line of sight, and the pupil large. The mirror is to be held two feet distant from the patient, and its inclination rapidly varied, so as to throw...perpendicular, and from opposite sides, in succession, the area of the pupil then exhibits a linear shadow in some meridian rather than others." Couper, in... | |
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has been sometimes led to the discovery of regular astigmatism of the cornea, and the direction of the chief meridians by using the mirror of the ophthalmoscope much in the same way as for slight degrees of conical cornea. The observation is more easy... 
