15.Which aqueous humor outflow pathway is affected in open-angle glaucoma? Trabecular meshwork 16. What is the classic sign of congenital glaucoma? Buphthalmos (enlarged eye) 17. Which systemic condition is a risk factor for glaucoma? Hypertension 18. Which angle-closure glaucoma treatment provides immediate relief? Peripheral iridotomy 19.Which beta-blocker is commonly used in glaucoma treatment? Timolol 20. Which drug is used in emergency treatment of acute angle-closure glaucoma? Acetazolamide,Dorzolamide 21. Which test differentiates open-angle from angle-closure glaucoma? Gonioscopy 22. Which optic nerve head change is characteristic of glaucoma? Vertical elongation of the cup