Which of the following is a common effect of Cyclopentolate?

Cyclopentolate is a medication often used in ophthalmology, primarily as a cycloplegic agent for dilating the pupils during eye examinations. One of its primary effects is to cause mydriasis, or increased pupil size, which allows for a better view of the interior structures of the eye. This dilation occurs because cyclopentolate inhibits the sphincter muscle of the iris and paralyzes the ciliary muscle, thus preventing the eye from focusing on near objects and facilitating a more comprehensive examination by the eye care professional.

When looking at the other options, they do not represent typical effects associated with cyclopentolate. Improved near vision would be counterintuitive, as the drug temporarily paralyzes the ciliary muscle, making it harder to focus on close objects. A reduction in eye pressure is not a recognized outcome of cyclopentolate use; this medication does not address intraocular pressure. Moreover, enhanced color vision is unrelated to cyclopentolate's mechanism of action; it does not enhance or modify the perception of color. Therefore, the common and expected effect of cyclopentolate is indeed the increased pupil size.