No, an eye grade of 500 is not considered normal. It indicates profound visual impairment.
A visual acuity measurement, often expressed in terms like 20/20, describes how well someone can see at a distance compared to someone with normal vision. A 20/20 measurement is considered normal. When vision is worse than 20/20, the second number increases.
Based on commonly used classifications of visual impairment, a 20/500 visual acuity falls into the category of profound low vision:
- Normal or Near-Normal Vision: 20/20 to 20/60
- Moderate Low Vision: 20/70 to 20/160
- Severe Low Vision: 20/200 to 20/400
- Profound Low Vision: 20/500 to 20/1000
This means that someone with 20/500 vision needs to be 20 feet away from an object to see it as clearly as someone with normal vision would see it from 500 feet away. It's important to consult with an eye care professional for a comprehensive eye exam and to discuss potential treatment options or visual aids.
