Corneal Topography
Corneal Topography Eef van der Worp John de Brabander Frans Jongsma ▪ INTRODUCTION Contact lens practitioners have a high interest in the shape of the cornea. When this shape is…
OPHTHALMOLOGY
Gas-Permeable Material Selection
Gas-Permeable Material Selection Edward S. Bennett Before the fitting, evaluation, and patient education procedures, it is important to select the most appropriate lens material for a given patient. An understanding…
Companion for Contact Lens Optics
Companion for Contact Lens Optics William J. Benjamin Contact lenses are prescribed for their optical effects on vision, which have been extensively discussed in Chapters 26, 27, and 28 of…
Preliminary Evaluation
Preliminary Evaluation Edward S. Bennett Ronald K. Watanabe Carolyn G. Begley ▪ PURPOSE A comprehensive preliminary evaluation is the essential first step in the contact lens fitting process. It is…
The Eye as a Target Organ for Stem Cell Therapy
Fig. 1.1 Autofluorescence imaging of the retinal pigment epithelium (RPE), demonstrating the topographic distribution of fluorescence in the posterior segment of the human eye. Many fluorophores are contained within RPE,…
New Developments in Retinal Cell Transplantation and the Impact of Stem Cells
Fig. 8.1 Shows an EM autoradiogram revealing tritiated thymidine grains (TT) present in the nuclei of transplanted human RPE in owl monkey retina several days after surgery We then sought…
Stem Cells and Glaucoma
Fig. 5.1 Summary graphic describing the stages of progenitor cell (blue) to retinal ganglion cell (green) transition, and the transcription factors and extrinsic, environmental signals known to be associated with…
Stem Cells, Mechanism-Based Therapies and Regenerative Medicine Approaches
Fig. 7.1 Macular degeneration is caused by degeneration of the retina resulting in vision loss in the macula at the center of the visual field. As this simulated photographic representation…
The Current Status of Corneal Limbal Stem Cell Transplantation in Humans
Fig. 3.1 (a) Histology of the human cornea stained with hematoxylin and eosin (H&E). (b) Corneoscleral border. (c) Limbal junction. Reprinted with permission from Takacs et al. [3] At the…
Bone Marrow Stem Cells in Retinal Disease
Fig. 6.1 Diabetes is a vascular disease that can obliterate the capillary bed in the retina. Diabetic retinopathy begins with hemorrhages in the blood vessels around the retina (pictured above…
