Figure 1

Lens fluorescence in relation to ischemic heart disease risk. Analysis of the entire study population (n = 421) demonstrated that the risk of ischemic heart disease increased with increasing lens fluorescence (p = 0.001), the association being statistically attributable to tobacco smoking and increasing levels of glycemia. Because of the strong increase in lens fluorescence with age, only subjects who were 40 years of age at time of examination is shown in the graph (n = 73). Lens fluorescence is shown in logarithmic values. Ischemic heart disease risk was estimated using the Precard ^® software. Subjects who had smoked 10 pack years or more are dipicted as filled diamonds (◆), subjects who had smoked less than 10 pack years are dipicted as open diamonds (◇), and subjects who had never smoked are shown as crosses (x).