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 ...

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 ...

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.

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

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.

2005年2月21日 · Discussion. The diagnosis is Fuchs endothelial dystrophy due to endothelial cell loss. Patients have worse vision in the morning because of the eyes being closed during the night causing a buildup of corneal edema (because the endothelium helps …

2017年11月28日 · For example, the Pentacam® will provide a cross-sectional image of the anterior chamber and can be used to visualize a floating membrane attached to the anterior capsule [10]. Anterior segment optical coherence tomography (OCT) has also been used to identify true exfoliation, and numerous sources have reported clear display of the split in the ...

Microcornea Microcornea Contributor: William Charles Caccamise, Sr, MD, Retired Clinical Assistant Professor of Ophthalmology, University of Rochester School of Medicine and Dentistry