NEB Medical Standard 5 MCQs

Strabismus is misalignment of the visual axes of the eyes.

Central retinal artery occlusion is acute retinal ischaemia causing sudden painless monocular visual loss.

Conjunctivitis is inflammation of the conjunctiva causing redness and discharge.

Pterygium is a triangular fibrovascular growth of conjunctiva extending onto the cornea.

Visual field is the area visible to an eye while fixation is maintained.

Relative risk is a ratio comparing disease risk in an exposed group with risk in an unexposed group.

Cataract is opacification of the crystalline lens causing progressive visual impairment.

Primary open-angle glaucoma is a chronic optic neuropathy often associated with raised intraocular pressure and open drainage angles.

Acute angle-closure glaucoma is sudden closure of the anterior chamber angle causing painful red eye and raised intraocular pressure.

Secondary prevention is early detection and prompt intervention to limit disease progression.

Tertiary prevention is measures that reduce disability and improve function after established disease.

Herd immunity is population-level protection that arises when enough people are immune to reduce transmission.