Chronic exposure to poor lighting causes?

VSSC Nursing Officer - 2021

Community Health Nursing

Easy

Appeared in: VSSC Nursing Officer - 2021

Explanation

Miner's nystagmus is a specific occupational disease affecting the eyes.
It is caused by prolonged work in conditions of poor or inadequate lighting, historically common among coal miners.
The condition is characterized by involuntary, oscillating movements of the eyeballs.
Other symptoms can include headache, dizziness, and photophobia (light sensitivity).

Option A: Blurring of vision is a common symptom of temporary eye strain from poor lighting, but it is not a specific, chronic disease entity like Miner's nystagmus. It usually resolves with rest and improved lighting.
Option B: Cataract, the clouding of the lens, is primarily associated with aging, exposure to ultraviolet (UV) radiation, diabetes, and long-term steroid use. It is not caused by a lack of light.
Option C: White finger, also known as hand-arm vibration syndrome (HAVS) or Raynaud's phenomenon of occupational origin, is a vascular disorder caused by prolonged use of vibrating hand-held machinery. It has no relation to lighting conditions.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Occupational health hazards related to poor illumination as background academic context rather than a clinical decision trigger.
Occupational health nurses play a vital role in assessing workplace environments for physical hazards like poor illumination.
Interventions include recommending lighting surveys (using a lux meter), advocating for better-engineered lighting solutions, and ensuring regular maintenance of light fixtures.
Nurses should educate workers on the importance of visual rest breaks, proper posture to avoid eye strain, and the need for regular vision screening to detect early signs of conditions like nystagmus.

How to Approach the Question

First, identify the key elements of the question: the cause is 'chronic exposure to poor lighting'.
Next, analyze each option to see which one is a known long-term consequence of this specific occupational hazard.
Evaluate 'Blurring of vision'. This is a symptom, often temporary, of eye strain, not a specific chronic disease.
Evaluate 'Cataract'. Recall or determine that cataracts are caused by factors like aging and UV light, not the absence of light.
Evaluate 'White finger'. Recognize this as a condition related to vibration, not lighting.
Evaluate 'Miner's nystagmus'. Identify this as a historically recognized occupational disease directly linked to miners working in prolonged darkness or poor light. This makes it the most specific and correct answer.

Concept Tested & Keywords

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