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Cycloplegia is a medical term used to describe paralysis of the muscles that control the shape of the lens in the eye, resulting in a loss of the eye's ability to focus on objects at different distances. This can be achieved through the use of certain medications, such as cycloplegic eye drops, which can temporarily block the function of the ciliary muscle in the eye.
Cycloplegic eye drops contain agents such as atropine, scopolamine, or tropicamide, which work by blocking the action of the parasympathetic nervous system on the ciliary muscle, resulting in relaxation of the muscle and dilation of the pupil. This dilation of the pupil allows the eye doctor to more easily examine the eye and determine the need for corrective lenses or other treatment.
Cycloplegic eye drops are commonly used in eye exams, especially for children, as their eye muscles are more flexible and able to compensate for vision problems. They can also be used in the treatment of certain eye conditions, such as uveitis, where they can help reduce inflammation and pain.
It is important to follow the instructions of your healthcare provider when using cycloplegic eye drops, as they can cause temporary blurred vision and increased sensitivity to light. These effects typically wear off within a few hours, but it is important to avoid driving or operating heavy machinery until your vision returns to normal.