Corneal Sensitivity in Pregnancy

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Abstract
Few studies are available on changes in corneal sensitivity during pregnancy, and most earlier work was done with instruments which gave only a rough approximation of the threshold of corneal sensitivity to touch. The new ethesiometer developed by Draeger permits, for the 1st time, an exact and reproducible determination of the threshold of corneal sensitivity to touch. Corneal sensitivity was studied in 86 pregnant women between the 13th and 40th wk of gestation. The thresholds were significantly higher in the study group as compared to a control group of non-pregnant women. The decrease in corneal sensitivity was unrelated to duration of gestation, weight gain during pregnancy or mean arterial pressure at the time of examination. Possible mechanisms responsible for changes in corneal sensitivity in pregnancy are discussed.

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