Which is better for your eyes?: Is there a link between having more or less sensitive eyes and your vision?

In one of the world's leading medical journals, researchers have found that when a patient has less sensitive pupils, it may be the difference between life and death.In a study, researchers at the University of Sheffield and the University College London found that the number of pupils that a patient's eyes have narrowed significantly depends on the amount of phenothazine in the eye drug, with les...