Diurnal and long-term variations in corneal thickness in the normal and alloxan-induced diabetic rabbit

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Abstract
The variation of central corneal thickness with age was measured weekly at 10am by ultrasound pachometry in 10 normal (5 to 19 weeks of age) and 10 alloxan-induced diabetic (9 to 19 weeks of age) rabbits. The diurnal variation of corneal thickness was also measured at 2 hour intervals for a period of 24 hours on both groups of rabbits at 19 weeks of age. A nonlinear increase in corneal thickness with age was noted in both groups, with the diabetic cornea becoming significantly thicker (pin vivo corneal thickness studies using normal rabbits of under 12 weeks of age (2kg body weight).