Appropriate distance to be maintained between eye and dropper while instilling eye drops is?

RUHS, Jaipur, M.Sc Nursing Entrance Exam-2018

Fundamental of Nursing

Easy

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2018

Explanation

The correct distance for instilling eye drops is 1-2 cm (or 1⁄4 to 1⁄2 inch) above the conjunctival sac.
This distance is a critical safety measure to prevent the dropper tip from touching the eye, which could cause injury or contamination.
It is also the optimal distance for accuracy, ensuring the drop lands in the lower conjunctival sac without causing a strong blink reflex.
Holding the hand on the patient's forehead provides stability to maintain this distance accurately.

Option B: A distance of 3-4 cm is too far. It increases the risk of the drop missing the eye completely or landing on the eyelashes or cheek.
Option C: A distance of 4-6 cm is excessively high. The falling drop could startle the patient, causing them to blink or move, and makes accurate placement nearly impossible.
Option D: A distance of 6-8 cm is far too great for this procedure. It would be very difficult to aim the drop accurately, and the potential for contamination as the drop falls through the air increases.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Medication Administration: Ophthalmic Route as background academic context rather than a clinical decision trigger.
Adhering to the 1-2 cm distance is a fundamental aspect of aseptic technique in ophthalmic medication administration, directly impacting patient safety by preventing corneal abrasions and infections.
Incorrect technique can lead to under-dosing (if the drop misses the eye) or systemic side effects (if not followed by nasolacrimal occlusion), reducing the therapeutic effectiveness of the treatment.
What if? If the patient is a child or an uncooperative adult who cannot hold still, the nurse should use a safe restraining technique. As a last resort, the nurse can have the child lie down, gently hold their head, and place the drop at the inner canthus (corner) of the closed eye. When the child opens their eye, the medication will flow in.

How to Approach the Question

First, identify the core of the question: it asks for a specific, standard measurement in a common nursing procedure (instilling eye drops).
This is a factual recall question. Access your knowledge of medication administration principles.
Consider the two main goals of the procedure: safety (don't touch the eye) and efficacy (get the drop in the right place).
Evaluate the options based on these goals. A very small distance risks touching the eye. A very large distance risks missing the eye.
Select the option that balances these two factors. 1-2 cm is close enough for accuracy but far enough for safety.
Eliminate the other options as they are impractically large and would compromise the accuracy of the procedure.

Concept Tested & Keywords

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