Question:
A 25-year-old presents with blurred distance vision but clear near vision. Retinoscopy reveals a refractive error of −2.50 D in both eyes. Which diagnosis best fits these findings?
A. Mild Hyperopia
B. Mild Myopia
C. Moderate Myopia
D. Presbyopia
Answer:
C. is correct because a refractive error of −2.50 D in both eyes typically falls into the moderate myopia category in many clinical classifications. Myopia occurs when the optical power of the eye is too strong relative to its length, or when the eye is too long relative to its focusing power, causing light from distant objects to focus in front of the retina rather than on it. As a result, distance vision is blurred while near vision remains clearer. In the case described, the patient’s main complaint is blurred distance vision with relatively good near vision, which is characteristic of myopia. The numerical value of −2.50 D indicates more than very mild myopia, so it is reasonable to categorize it as moderate.