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[Effects of contact lens wear on the corneal endothelium and sensitivity]. 1994

X M Gong, and M R Shao, and X Q Tao
Zhongshan Ophthalmic Center, Sun Yat-sen University of Medical Sciences, Guangzhou.

The corneal endothelium of 38 contact lens wearers (74 eyes) and 74 normal eyes for control was photographed and analyzed with specular microscopy and the graphic processing system. The central corneal sensitivity and thickness were also measured. The results showed that the frequency rate of hexagonal cells that reflected the changes in endothelial cell morphology and size, the coefficient of variation of cell area, and the ratio of largest to smallest cell areas differed significantly from those of the control eyes comparable in age and sex distribution. The central corneal sensitivity declined while the corneal thickness was not affected. The causes and clinical significance of endothelial changes were discussed.

UI MeSH Term Description Entries
D007091 Image Processing, Computer-Assisted A technique of inputting two-dimensional or three-dimensional images into a computer and then enhancing or analyzing the imagery into a form that is more useful to the human observer. Biomedical Image Processing,Computer-Assisted Image Processing,Digital Image Processing,Image Analysis, Computer-Assisted,Image Reconstruction,Medical Image Processing,Analysis, Computer-Assisted Image,Computer-Assisted Image Analysis,Computer Assisted Image Analysis,Computer Assisted Image Processing,Computer-Assisted Image Analyses,Image Analyses, Computer-Assisted,Image Analysis, Computer Assisted,Image Processing, Biomedical,Image Processing, Computer Assisted,Image Processing, Digital,Image Processing, Medical,Image Processings, Medical,Image Reconstructions,Medical Image Processings,Processing, Biomedical Image,Processing, Digital Image,Processing, Medical Image,Processings, Digital Image,Processings, Medical Image,Reconstruction, Image,Reconstructions, Image
D002452 Cell Count The number of CELLS of a specific kind, usually measured per unit volume or area of sample. Cell Density,Cell Number,Cell Counts,Cell Densities,Cell Numbers,Count, Cell,Counts, Cell,Densities, Cell,Density, Cell,Number, Cell,Numbers, Cell
D003261 Contact Lenses Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999) Lenses, Contact,Contact Lens,Lens, Contact
D003315 Cornea The transparent anterior portion of the fibrous coat of the eye consisting of five layers: stratified squamous CORNEAL EPITHELIUM; BOWMAN MEMBRANE; CORNEAL STROMA; DESCEMET MEMBRANE; and mesenchymal CORNEAL ENDOTHELIUM. It serves as the first refracting medium of the eye. It is structurally continuous with the SCLERA, avascular, receiving its nourishment by permeation through spaces between the lamellae, and is innervated by the ophthalmic division of the TRIGEMINAL NERVE via the ciliary nerves and those of the surrounding conjunctiva which together form plexuses. (Cline et al., Dictionary of Visual Science, 4th ed) Corneas
D004728 Endothelium, Corneal Single layer of large flattened cells covering the surface of the cornea. Anterior Chamber Epithelium,Corneal Endothelium,Endothelium, Anterior Chamber,Epithelium, Anterior Chamber,Anterior Chamber Endothelium
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults
D012677 Sensation The process in which specialized SENSORY RECEPTOR CELLS transduce peripheral stimuli (physical or chemical) into NERVE IMPULSES which are then transmitted to the various sensory centers in the CENTRAL NERVOUS SYSTEM. Sensory Function,Organoleptic,Function, Sensory,Functions, Sensory,Sensations,Sensory Functions

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