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2007-2008 Basic and Clinical Science Course Section 4: by American Academy of Ophthalmology, Debra J. Shetlar, MD

By American Academy of Ophthalmology, Debra J. Shetlar, MD

Discusses advances within the analysis and type of tumors because it courses the reader via a logical, tissue-specific series that levels from topography via affliction procedure to basic and differential prognosis. comprises many new colour pathologic and medical photos and diagrams. Covers wound fix; specimen dealing with, together with processing and marking; and diagnostic thoughts. additionally incorporates a list for soliciting for ophthalmic pathologic session.

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Extra resources for 2007-2008 Basic and Clinical Science Course Section 4: Ophthalmic Pathology and Intraocular Tumors

Sample text

Note that b) is displayed in radius (mm) while the rest of maps are displayed in diopters (see the colour scale). Map a) displays a centre overlay (small red cross) that indicates where the true centre of the cornea is, and a pupil outline overlay that reproduces pupil margin, the visually important region. Map b) shows a "verify rings" overlay, to better asses the quality of the taken image. Red and green concentric rings should alternate and not cross. The red rings should be located on the outer edge of the white rings, and the green rings should be located on the outer edge of the black rings.

Shown are trend analysis of both eyes of a patient who underwent myopic LASIK with two different excimer lasers. Shown are axial diopter pre-operative, tangential diopter immediate postoperative and K-trend graph. Note that immediately after surgery (the day after), ablation zones differ form each other: it is due to the fact that a different excimer laser was used for each eye. Schwind® Keratom™ was used on right eye, while left eye was operated using the Bausch & Lomb® -Chiron Technolas 217™.

25 Section II: Topography In this chapter we will try to introduce the novice to this interesting new world of instruments recently developed due to the advent of refractive corneal surgery. We have tried to show different maps from different systems, trying to make an interesting basic atlas of corneal topography. There is no perfect system to assess true corneal surface shape, but we still have to rely on the instruments we have, waiting for new instruments and methods being developed for better accuracy.

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