It is to dilate the pupil, that the reason why mydriatic drops
are given to the patient before examination.
A slit lamp examination includes
viewing the lens and anterior chamber, in bright light the muscle of the iris
contract, reducing the size of the pupil in order to keep more light from going
inside the eye the process is called miosis.
A change in the anthropometric index across the distribution (5-95 percentile) resulted in a decrease in the E/I ratio of 0.032-0.037 and a decrease in the HRMax-Min of 1.56-2.39 beats/min.
