👨⚕️ Cycloplegic drugs paralyze the ciliary muscle, blocking accommodation (focusing) and dilating the pupil. Used in eye exams, treating uveitis, or managing amblyopia.
Common examples:
- Atropine (long-acting, 1–2 weeks)
- Use: Amblyopia, uveitis.
- Side effect: Dry mouth, blurred vision.
- Cyclopentolate (shorter, 24–48h)
- Use: Pediatric exams, refraction.
- Risk: Hallucinations in kids.
- Tropicamide (fast, 4–6h)
- Use: Routine dilation.
- Mildest side effects.
- Homatropine (moderate duration)
- Use: Uveitis, post-surgery.
Precautions:
- Avoid driving post-use.
- Monitor IOP (glaucoma risk).
- Children/elderly: Adjust doses.
- Contraindicated: Narrow-angle glaucoma.