منابع مشابه
Posterior conical cornea.
SINCE this condition was first described (Butler, 1930), only a handful ofcases has been added to the literature. In view of its infrequency, some cases are presented and compared with previous descriptions. Perhaps the name, although anatomically descriptive, is unfortunate, for it would imply that the condition has some relationship with the better-known conical cornea. In fact, there is no e...
متن کاملHyaline ridges on the posterior cornea.
HYALINE or glassy ridge formation on the posterior corneal surface appears to be a not uncommon phenomenon, the recognition of which may be missed without careful examination with the slit-lamp microscope. Normally, Descemet's membrane is secreted as a hyaline tissue by the endothelial corneal cells during intra-uterine life; the exact point of development at which it appears is not definitely ...
متن کاملThe posterior cornea: hiding in plain sight.
For more than 100 years, eye scientists and clinicians have recognized that there is a difference between the refractive and anterior corneal astigmatism of the human eye. Javal postulated an approximately linear relationship between corneal astigmatism and refractive astigmatism, which became known as Javal’s rule: refractive astigmatism 1⁄4 1.25 (keratometric astigmatism) 0.50 90. For most ey...
متن کاملA new donor cornea harvesting technique for posterior lamellar keratoplasty.
AIMS To describe a technique for posterior lamellar keratoplasty donor preparation. METHODS In an experimental study eight human donor research corneas were mounted onto an artificial anterior chamber and deep stromal pockets dissected. Four corneas were mounted in the standard endothelial side down orientation and dissected using standard instruments (group 1). Another four corneas were moun...
متن کاملPathology of posterior polymorphous degeneration of the cornea.
POSTERIOR polymorphous degeneration of the cornea is an uncommon, non-progressive, hereditary condition which is usually bilateral; in the majority of cases there is only minimal visual impairment (Duke-Elder and Leigh, 1965). The condition was first described by Koeppe (1916) as "keratitis bullosa interna", on account of the congenital pits on the posterior corneal surface. Koeppe (1920) repor...
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ژورنال
عنوان ژورنال: British Journal of Ophthalmology
سال: 1957
ISSN: 0007-1161
DOI: 10.1136/bjo.41.1.31