Glaucoma is a group of disorders characterized by:

Appeared in: IGNOU PB Bsc Nsg.Entrance-2026

Explanation

Glaucoma is a group of eye conditions primarily defined by an elevated intraocular pressure (IOP) that is too high for the continued health of the optic nerve.
This increased pressure results from an imbalance between the production and drainage of the eye's fluid (aqueous humor).
Sustained high IOP causes progressive and irreversible damage to the optic nerve, leading to a characteristic pattern of vision loss that starts in the periphery.
The normal range for intraocular pressure is generally considered to be between 10 and 21 mm Hg.

Option A: Increased glare is not the defining characteristic of glaucoma. It is a classic symptom of cataracts, where opacities in the lens scatter light.
Option B: Dry eye is a separate condition related to the tear film and ocular surface lubrication, not the internal pressure of the eye.
Option C: While severe, untreated glaucoma leads to reduced visual acuity and blindness, this is a consequence or a late-stage symptom, not the primary defining characteristic of the disease group. The underlying cause is the pressure.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pathophysiology and defining characteristics of glaucoma as background academic context rather than a clinical decision trigger.
Nurses are central to patient education on glaucoma, emphasizing that it is a chronic, lifelong condition requiring strict adherence to treatment (usually eye drops) to prevent irreversible blindness.
A key nursing skill is teaching patients the proper technique for instilling eye drops, including punctal occlusion, to maximize the drug's local effect and minimize systemic side effects like bradycardia from beta-blockers.
Glaucoma is a leading cause of irreversible blindness in India, making screening and patient education a public health priority for nurses.

How to Approach the Question

First, identify the core of the question. It asks for the defining characteristic of 'Glaucoma'.
This is a factual recall question based on the pathophysiology of a specific disease.
Evaluate each option based on your knowledge of eye disorders.
Recall that 'Increased glare' is a hallmark of cataracts.
Recognize that 'Dry eye' is a separate surface-level condition.
Differentiate between a cause and a symptom. 'Reduced visual acuity' is a result of glaucoma, but 'Increased intraocular pressure' is the underlying mechanism that defines the disease process.

Concept Tested & Keywords

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E6 Nursing Brunner Adult Health 3SA Vol 2 Part 1 pp. 93-95, 96-98

E6 Pathology-Textbook of PATHOLOGYHarsh Mohan Part 2 (215-514) p. 82-84

Practise the full IGNOU PB Bsc Nsg.Entrance-2026

Attempt every question from this paper in a timed mock, then review the full solution for each one.