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[Investigation of corneal autofluorescence in diabetic patients]
Y Ishino1, N Yokoi, T Yasuhara
1Department of Ophthalmology, Kyoto Prefectural University of Medicine, Japan.
Purpose:
The investigation of corneal autofluorescence in diabetic patients.
Objects And Methods:
Corneal autofluorescence was investigated with a newly-developed fluorophotometer (wave length: excitation, 290-390 nm; emission, 430-630 nm) having, fluorescence characteristics involving those of reduced pyridine nucleotides (PN) and advanced glycation endoproduct (AGE) except pentosidine and pyrraline. Twenty-eight patients with non-insulin-dependent diabetes mellitus and sixty-seven healthy volunteers were studied.
Results:
The corneal autofluorescence was 1.65 times higher than that of controls (p < 0.0001). In non-insulin-dependent diabetes mellitus, the corneal autofluorescence was not correlated significantly with various diabetic parameters in blood (r < 0.4). In controls, the corneal autofluorescence was correlated significantly with age (r = 0.438).
Conclusion:
The corneal autofluorescence has some relation with PN and AGE accumulation in the cornea.