Cycloplegia
[1] Because of the paralysis of the ciliary muscle, the curvature of the lens can no longer be adjusted to focus on nearby objects.This results in similar problems as those caused by presbyopia, in which the lens has lost elasticity and can also no longer focus on close-by objects.Cycloplegia with accompanying mydriasis (dilation of pupil) is usually due to topical application of muscarinic antagonists such as atropine and cyclopentolate.Cycloplegic drugs are generally muscarinic receptor antagonists such as atropine, cyclopentolate, homatropine, scopolamine and tropicamide.The ones specifically used by ophthalmologists or optometrists wear off in hours, but when the patient leaves the office strong sunglasses are provided for comfort.