Changes in corneal thickness have been correlated with severity of dia
betic retinopathy. Measuring light scatter at the central cornea may r
eflect the changes in corneal thickness and hence the retinopathy. Thi
s study compared the peak central corneal light scatter between 22 ins
ulin-dependent diabetic patients with disease of at least 10 years' du
ration and 29 controls. No significant difference was found in the lig
ht-scattering properties of the central cornea between the two groups.
This technique does not offer an alternative method of screening for
diabetic retinopathy.