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Raamatud Books 1 - 10 of 12 on has been sometimes led to the discovery of regular astigmatism of the cornea, and....
" 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... "
On the Anomalies of Accommodation and Refraction of the Eye: With a ... - Page 490
by Franciscus Cornelis Donders, William Daniel Moore - 1864 - 635 lehte
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On Long, Short, and Weak Sight, and Their Treatment by the Scientific Use of ...

John Soelberg Wells - 1864 - 214 lehte
...easy if the optic disc is in the line of sight and the pupil large. The mirror is to be held at two feet distance, and its inclination rapidly varied,...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than in others."* Astigmatism...
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A Treatise on the Diseases of the Eye

John Soelberg Wells - 1869 - 741 lehte
...easy if the optic disc is in the line of sight and the pupil large. The mirror is to be held at two feet distance, and its inclination rapidly varied,...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than in others." * Astigmatism...
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A Treatise on the Diseases of the Eye

John Soelberg Wells - 1873 - 836 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,"* Mr. Couper...
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A Treatise on the Diseases of the Eye

John Soelberg Wells - 1873 - 831 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...and from opposite sides in succession, in successive meridiane. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than...
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On Long, Short, and Weak Sight

John Soelberg Wells - 1873 - 254 lehte
...easy if the optic disc is in the line of sight and the pupil large. The mirror is to be held at two feet distance, and its inclination rapidly varied,...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than hi others."* Mr. Couper...
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Determination of the refraction of the eye by means of theophthalmoscope

Edward Greely Loring - 1876 - 63 lehte
...had previously suggested for conical cornea. The mirror is to be held at about 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 area of the pupil then exhibits a somewhat linear shadow in some meridians...
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Text-book of Ophthalmoscopy, 1. köide

Edward Greely Loring - 1886 - 20 lehte
...had previously suggested for conical cornea. The mirror is to be held at about 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 area of the pupil then exhibits a somewhat linear shadow in some meridians...
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A Theoretical and Practical Treatise on Astigmatism

Swan Moses Burnett - 1887 - 245 lehte
...easy if the optic disk is in the line of sight and the pupil large. The mirror is to be held at two feet distance and its inclination rapidly varied so...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than in others.' " This description...
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The Shadow-test in the Diagnosis and Estimation of Ametropia

William Mardon Beaumont - 1890 - 38 lehte
...easy if the optic disc is in the line of sight and the pupil large. The mirror is to be held at two feet distance, and its inclination rapidly varied...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than in others*. " Again, in...
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The Collected Papers of Sir W. Bowman, 2. köide

Sir William Bowman - 1892
...; and as for the anterior membrane, I have many times extensively removed it with even some of the distance, and its inclination rapidly varied, so as...succession, in successive meridians. The area of the pupil then exhibits a somewhat linear shadow in some meridians rather than in others.' " BONDERS, '...
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