2016年10月19日 · A third technique, known as Scheimpflug imaging, uses a rotating camera to photograph corneal cross-sections illuminated by slit beams at different angles (e.g., Pentacam). This method corrects for the non-planar shape of the cornea and, thus, allows greater accuracy and resolution in creating a 3-D map of the cornea (2-3).

Figure 2: The Pentacam Scheimpflug cross-sectional images from the patient in Figures 1 show the contour changes associated with the inferior stromal thinning Enlarge Download Figure 3: The axial curvature and anterior float Pentacam topography maps from the patient in Figure 1 reveal the characteristic high against-the-rule astigmatism pattern ...

2023年8月8日 · Figure 3: Scheimpflug tomography of the right eye on presentation (Oculus Pentacam), 4 Maps Refractive view. Imaging demonstrated (A) irregular contour; (B) increased corneal thickness, displacement of the thinnest point, and loss of isopach concentricity; and (C) focal areas of posterior depression, representing corneal edema.

Figure 4. Pentacam 4 Map Report of a patient with advanced keratoconus. The axial curvature map depicts a steep anterior corneal curvature centrally with a large difference in refractive power at the apex compared to the periphery. The anterior float and posterior float maps also depict the elevated central cornea compared to the depressed ...

Address. University of Iowa Roy J. and Lucille A. Carver College of Medicine Department of Ophthalmology and Visual Sciences

2018年10月15日 · DISCUSSION. Introduction. Terrien marginal degeneration is a rare disorder characterized by slowly progressive thinning of the peripheral cornea.

2010年2月22日 · Successful treatment of EBMD is predicated upon optimizing conditions necessary for the formation of stable epithelial basement membrane adhesion complexes throughout the entire cornea, preferably before the development of vision-compromising morphological abnormalities in the visual axis.

Contributor: Jesse Vislisel, MD Photographer: Carol Chan, CRA (2a, 2b) and Brice Critser, CRA (2c, 2d). This patient with Terrien marginal degeneration has characteristic findings in the right eye.

2018年6月12日 · DI AGNOSIS: Terrien Marginal Degeneration. DISCUSSION. Introduction. Terrien marginal degeneration is a rare disorder characterized by slowly progressive thinning of the peripheral cornea.

2014年3月31日 · Salzmann's Nodular Corneal Degeneration 62-year-old woman presents with 3 years of progressive decrease in vision