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February 1966

Hydration and Transparency of Corneal Stroma

Author Affiliations

From the Corneal Research Unit, Institute of Biological and Medical Sciences, Retina Foundation, Boston. University of Alberta Eye Research Fellow, Boston.

Arch Ophthalmol. 1966;75(2):228-231. doi:10.1001/archopht.1966.00970050230016

When the corneal hydration increases, its transparency decreases but the quantitative relation between these two functions has not been extensively analyzed. The decreased transparency is due to the epithelial edema and the stromal edema, but their individual contribution to this decrease must be studied separately. The transparency of the cornea has been studied by various techniques. Maurice1 measured the light scattered by the corneal stroma at 60° from the incident light and showed an increase in scatter with increasing corneal hydration. Kikkawa2 determined the angular distribution of the light scatter by the cornea but did not quantitatively correlate this with hydration. Potts and Friedman3 determined the light transmission through the cornea and were unable to show any significant change in the specular density of this light for varying hydrations of corneal stroma. Coulombre and Coulombre4 measured light transmission through the developing chick cornea (including epithelium) and