Different refractive power between two eyes is known as?
**Core Concept**
The question is testing the concept of refractive errors and their effects on vision, specifically the condition where there is a difference in refractive power between the two eyes. This condition can lead to **anisometropia**, which affects binocular vision.
**Why the Correct Answer is Right**
Since the correct answer is not explicitly provided, let's discuss the concept: Anisometropia occurs when there is a significant difference in the refractive powers of the two eyes, making it difficult for the brain to merge the images from each eye into a single, coherent visual perception. This can lead to **amblyopia** (lazy eye) or **diplopia** (double vision) if not corrected properly.
**Why Each Wrong Option is Incorrect**
**Option A:** Not provided, but typically, options might include conditions like hyperopia (farsightedness) or myopia (nearsightedness), which are refractive errors but do not specifically describe a difference in refractive power between the two eyes.
**Option B:** Similar to Option A, without the specific text, we can infer that any option not defining a difference in refractive power between eyes would be incorrect.
**Option C:** and **Option D:** would be incorrect for the same reason as Options A and B, assuming they describe other types of refractive errors or conditions not related to the difference in refractive power between the eyes.
**Clinical Pearl / High-Yield Fact**
A key point to remember is that **anisometropia** can significantly affect a person's quality of life, and correcting this condition often requires careful consideration of the difference in refractive power between the two eyes.
**Correct Answer:** Correct Answer: D. Anisometropia.