Certified Ophthalmic Assistant Practice Exam

What is the term used for drugs that cause dilation of the pupils?

1. Mydriatics

2. Miotics

3. Antihistamines

4. Cycloplegics

The correct answer is: Mydriatics

The term used for drugs that cause dilation of the pupils is mydriatics. These medications work by relaxing the circular muscles of the iris, resulting in an enlarged pupil, or mydriasis. Mydriatics are often used in ophthalmology to facilitate a more comprehensive examination of the retina and other internal structures of the eye. Mydriatics can also be used during procedures that require a clear view of the ocular fundus or during certain surgical interventions. They are key tools in the practice of ophthalmology for diagnostics and treatment. The other terms relate to different effects on the eye. Miotics refer to drugs that constrict the pupil, antihistamines are primarily used to treat allergic reactions and may not specifically affect pupil size, and cycloplegics can result in dilation as well, but their primary function is to cause paralysis of the ciliary muscle, affecting the eye’s ability to accommodate.