Lack of association between iris color and primary iris cysts.

A case-control study of 78 white patients with primary cysts of the iris was undertaken. Two control groups were established for comparison with the subjects. Contingency tables were used to evaluate the distribution of iris color among subjects and controls. Statistical testing (chi 2) indicated no significant association of iris color with the presence of a primary iris cyst (P greater than .05). These results indicated that primary iris cysts do not exhibit the association with light iris color previously documented for iris melanocytic lesions.