**Core Concept**
The classification of visual acuity is based on the **Snellen chart**, which measures the sharpness of an individual's vision. Visual acuity of 6/60 indicates that an individual can read at 6 meters what a person with normal vision can read at 60 meters. This is a key principle in **ophthalmology**.

**Why the Correct Answer is Right**
A visual acuity of 6/60 is considered **low vision**, as it falls below the threshold for normal vision. According to the **World Health Organization (WHO)**, low vision is defined as a best-corrected visual acuity of less than 6/18 but equal to or better than 3/60.

**Why Each Wrong Option is Incorrect**
**Option A:** Incorrect because a visual acuity of 6/60 does not meet the criteria for normal vision.
**Option B:** Incorrect because a visual acuity of 6/60 is not considered blind.
**Option C:** Incorrect because a visual acuity of 6/60 is actually an indication of low vision.

**Clinical Pearl / High-Yield Fact**
It's essential to remember that visual acuity is just one aspect of vision assessment. Other critical factors include **visual field** and **contrast sensitivity**.

**Correct Answer:** D. Low vision