The role of the ocular lens in the regulation of intraocular pressure

Reiff, Theodore R.

doi:10.1006/jtbi.1995.0140

Cited by 1 publication

(2 citation statements)

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“…As indicated before, the other report suggesting possible fluid movement during accommodation is that of Reiff (1995). Although his concern is the change in intraocular pressure during accommodation, he states: "Another factor in the lens' ability to regulate intraocular pressure during accommodation would be the effect of the change in shape of the lens during accommodation on the transport of water into and out of the lens.…”

Section: Fluid Transport By the Crystalline Lens During Accommodationmentioning

confidence: 95%

“…We merely propose the possible existence of a fluid flow between the lens and the intraocular fluids during accommodation. This possibility has not been considered (except by Reiff (1995)) in the many publications on accommodation. The fundament of this assertion is based on physical laws governing the relation between surface and volume of a body changing shape.…”

Section: Fluid Transport By the Crystalline Lens During Accommodationmentioning

confidence: 99%

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Fluid transport phenomena in ocular epithelia

Candia

Alvarez

2008

Progress in Retinal and Eye Research

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This article discusses three largely unrecognized aspects related to fluid movement in ocular tissues; namely, a) the dynamic changes in water permeability observed in corneal and conjunctival epithelia under anisotonic conditions; b) the indications that the fluid transport rate exhibited by the ciliary epithelium is insufficient to explain aqueous humor production; and c) the evidence for fluid movement into and out of the lens during accommodation. We have studied each of these subjects in recent years and present an evaluation of our data within the context of the results of others who have also worked on electrolyte and fluid transport in ocular tissues. We propose that 1) the corneal and conjunctival epithelia, with apical aspects naturally exposed to variable tonicities, are capable of regulating their water permeabilities as part of the cell-volume regulatory process, 2) fluid may directly enter the anterior chamber of the eye across the anterior surface of the iris, thereby representing an additional entry pathway for aqueous humor production, and 3) changes in lens volume occur during accommodation, and such changes are best explained by a net influx and efflux of fluid.

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Section: Fluid Transport By the Crystalline Lens During Accommodationmentioning

confidence: 95%

Section: Fluid Transport By the Crystalline Lens During Accommodationmentioning

confidence: 99%