CORNEAL SENSITIVITY AND VIBRATORY PERCEPTION IN DIABETES MELLITUS

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Abstract
Patients (36) with diabetes mellitus and 45 controls were tested by blind studies for corneal sensitivity using Cochet and Bonnet''s aesthesiometer and for vibratory perception of the left index finger and great toe by a biothesiometer. Of the diabetics, 83% had a corneal sensitivity below 60 mm against 38% per cent of the controls. Likewise a significantly reduced vibratory perception was noticed among the diabetics. The reductions of corneal sensitivity and vibratory perception were correlated in the diabetics. In both groups falling corneal sensitivity and vibratory perception were found with increasing age over and above 50 yr. There was evidence to suggest that a reduced corneal sensitivity in relation to diabetes mellitus forms part of a polyneuropathy.

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