Short sightedness is also called as :

ESIC Nursing Officer 2016 (shift-1)

Medical Surgical Nursing

Easy

Appeared in: ESIC Nursing Officer 2016 (shift-1)

Explanation

Myopia is the medical term for short-sightedness or nearsightedness.
In myopia, parallel light rays from distant objects come to a focus in front of the retina, causing distant objects to appear blurry.
This condition is typically caused by an eyeball that is too long or a cornea/lens system that has too much refractive power.
As seen in the provided image, myopia is corrected using a concave (diverging) lens, which spreads the light rays so they focus correctly on the retina.

Option B: Hypermetropia is the medical term for long-sightedness (or farsightedness), not short-sightedness. In this condition, light focuses behind the retina.
Option C: Ametropia is a general, umbrella term that refers to any type of refractive error in the eye, including myopia, hypermetropia, and astigmatism. It is not the specific term for short-sightedness.
Option D: Presbyopia is an age-related condition where the eye's lens loses its elasticity, making it difficult to focus on near objects. It is a problem with accommodation, not a simple refractive error like myopia.

Visual 1: Diagram - A comparative diagram showing the focal points for a normal eye (emmetropia), a myopic eye (in front of the retina), and a hypermetropic eye (behind the retina). This helps visualize the core difference between the conditions.
Visual 2: Infographic - An infographic illustrating how concave and convex lenses work to correct myopia and hypermetropia, respectively. This clarifies the mechanism of correction.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Refractive Errors of the Eye as background academic context rather than a clinical decision trigger.
Nurses play a key role in vision screening, especially in school health programs, to detect refractive errors like myopia early. Early detection and correction are crucial to prevent learning difficulties and amblyopia (lazy eye).
Patient education is vital. Nurses should be able to explain the nature of myopia, the importance of wearing corrective lenses as prescribed, and signs of worsening vision that require a follow-up with an ophthalmologist.
What if? If a school-aged child complains of frequent headaches and squints to see the blackboard, the nurse should suspect uncorrected myopia and recommend a comprehensive eye examination, rather than dismissing it as simple eyestrain.

How to Approach the Question

Step 1: Identify the core term in the question, which is 'short-sightedness'.
Step 2: Recognize that the question is asking for the medical synonym for this common term. This is a factual recall question.
Step 3: Evaluate the options based on your knowledge of ophthalmology terminology.
Step 4: Recall or deduce that 'myopia' means nearsightedness. 'Hyper-' prefixes often relate to 'over' or 'far', linking hypermetropia to farsightedness. 'Presby-' relates to age, linking presbyopia to age-related vision changes.
Step 5: Eliminate the other options. Hypermetropia is the opposite condition. Ametropia is a general term, not specific. Presbyopia is an age-related focusing issue.
Step 6: Confirm that Myopia is the correct specific term for short-sightedness.

Concept Tested & Keywords

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