Which statement best describes the typical role of cycloplegia in managing equine ocular inflammation?

• A. Cycloplegia reduces intraocular pressure.
• B. Cycloplegia relieves conjunctival redness.
• C. Cycloplegia causes miosis.
• D. Cycloplegia reduces ciliary spasm, relieves pain, and helps prevent posterior synechiae.

Answer: (D)

Cycloplegia in equine ocular inflammation mainly serves to stop the ciliary muscle from spasming, which is a major source of pain in uveitis. By paralyzing the ciliary body, these drugs reduce ciliary spasm and thus relieve pain and photophobia. Keeping the iris free to move relative to the lens also helps prevent posterior synechiae, adhesions that can complicate inflammation if the iris sticks to the lens. Additionally, cycloplegics cause pupil dilation, which supports this protective effect by reducing iris-lens contact, though dilation is a side effect rather than the primary goal.

They don’t primarily lower intraocular pressure, and they don’t directly decrease conjunctival redness. They also don’t cause miosis; their effect is to produce mydriasis. So the description emphasizing reducing ciliary spasm, alleviating pain, and helping prevent posterior synechiae best reflects the typical role of cycloplegia in this setting.