Is there a positive correlation between color blindness and early onset cataracts?

Unrelated. Color deficiency is usually a genetic issue with the light receptors at the back of the eye. There is no higher incidence of cataracts in the color deficient then in the color normal. Cataracts sometimes have internal coloration which can distort the viewed spectrum somewhat as a filter effect rather tha n color deficiency.

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Help! Need to know if there's a correlation between color blindness and cataracts?

Cataract color? Simple anwer is no, although cataracts can cause a yellowish-brown discoloration over the vision, making white appear dingy, or light colors appear less vibrant. Read more...