By Ming Wang, Lance J. Kugler (eds.)
Atlas and medical Reference advisor for Corneal Topography is the 1st corneal topography publication that lends itself to effective snapshot seek and reference for busy clinicians at chair aspect. geared up into either map-based and disease-based sections, the e-book makes it possible for quickly reference in busy scientific situations.
Images come from the generally used topographers, the Zeiss Atlas and the Oculus Pentacam, however the rules of trend reputation might be utilized to any topographer. as a result text’s huge choice of topographic photographs and corresponding corneal stipulations, Atlas and medical Reference consultant for Corneal Topography can be utilized aspect by means of part with the topographer.
Designed as either a studying device for college kids and a reference for clinicians to exploit whilst confronted with a hard topography interpretation, Atlas and scientific Reference advisor for Corneal Topography can be preferred by means of a large spectrum of eye care pros. common ophthalmologists, cataract and refractive surgeons, corneal experts, optometrists, and ophthalmology citizens and scholars will reap the benefits of this necessary atlas for corneal topography.
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Additional info for Atlas and Clinical Reference Guide for Corneal Topography
This post-RK cornea shows central flattening. The irregularity of the flattening centrally, combined with steepening in the far periphery, is typical of post-RK eyes. Figure 3-17. The sagittal curvature map of a post-RK patient shows the typical flattening in blue with midperipheral steepening in darker green. Note the irregular pattern of flattening centrally. Eyes after laser-assisted insitu keratomileusis (LASIK) or photorefractive keratectomy (PRK) also have central flattening, but it is typically much more regular than post-RK eyes.
Measurements are displayed on a color-coded map, with red and orange colors representing thinner areas and blue or green colors representing thicker areas of the cornea. The thinnest area of a normal cornea is within the central 5 degrees and increases in thickness toward the periphery. Normal corneas are thicker in the nasal and superior areas, flattening more temporally. The cornea has a normal central thickness range between 520 and 540 μm. Findings on the pachymetric map may indicate an abnormal cornea.
2014 SLACK Incorporated. 22 Chapter 4 Figure 4-1. Normal elevation map from the Pentacam. ANTERIOR ELEVATION: KERATOCONUS Figure 4-2. Anterior elevation map of a patient with keratoconus shows the typical inferotemporal elevation (red) consistent with the diagnosis. The most anterior elevation is 35 μm, which is well above the limits of normal. Figure 4-3. Anterior elevation map shows inferior elevation, which is classic for keratoconus or ectasia. Anterior Elevation Maps 23 Figure 4-4. Anterior elevation map shows notable inferior elevation (red) of a patient diagnosed with keratoconus.