What does 6 12 mean in an eye test?

Simply put, 20/20 means ‘normal’ distance vision. In contrast, 20/40 (or 6/12) vision means that a patient who is 20 feet (6 metres) away from a standard eye chart can only read the same-sized letters that someone with 20/20 vision can read from further away (i.e. 40 feet or 12 metres away from the eye chart).

What is the meaning of 6 18 eyesight?

If vision is 20/60 (6/18), the person can read at 20 ft (6 m) what people with normal vision can read at 60 ft (18 m).

What does 20/20 vision without glasses mean?

To have 20/20 uncorrected vision, or vision achieved without glasses or contact lenses, you must have low “sphere” and “cyl” numbers on your prescription. On an eyeglass or contact lens prescription a “sphere” with a “plus” value describes hyperopia or farsightedness and a “minus” indicates myopia or nearsightedness.

What is the criteria for eligibility for LASIK surgery?

One will be eligible only if the eyes having power more than +-4D , is due to non -pathological conditions. If it is pathological one then the Medical Board has right to take decision. Pathological :— (NOT CONTROLLED, unable to control part of their behaviour; unreasonable)

What does 15/15 vision mean?

No. 15/15 vision means normal sharpness of vision at 15 feet, just as 20/20 indicates normal sharpness of vision at 20 feet. For onsistency, doctors of optometry in the United Sates use 20 feet as the standard for measuring sharpness of vision.

What are the normal results of an eye exam?

Question: What are “normal” results of an eye exam? Other than 20/20, what are normal axis and sphere numbers? Answer: In the United States we think of “normal” vision as being 20/20, although maximum human acuity is even finer at 20/16 to 20/12. Therefore, interestingly, “normal” acuity is not “perfect” vision.