Quick Answer: How Do I Read My Eye Test Results?

How do I read my eye exam results?

In general, the further away from zero the number on your prescription, the worse your eyesight and the more vision correction (stronger prescription) you need.

A “plus” (+) sign in front of the number means you are farsighted, and a “minus” (-) sign means you are nearsighted..

What do eye exam numbers mean?

For each eye, the first number you’ll see after O.D., O.S., or O.U. is a spherical correction (SPH), measured in diopters. This number is used to identify how strong your lenses need to be to correct your vision. If the number has a minus (-) sign next to it, it means you’re nearsighted.

What is the meaning of 2020 vision?

20/20 vision is a term used to express normal visual acuity (the clarity or sharpness of vision) measured at a distance of 20 feet. If you have 20/20 vision, you can see clearly at 20 feet what should normally be seen at that distance.

What is bad eyesight number?

A number between +/-. 025 to +/-2.00 indicates mild nearsightedness or farsightedness. A number between +/-2.25 to +/- 5.00 indicates moderate nearsightedness or farsightedness. A number greater than +/- 5.00 indicates severe nearsightedness or farsightedness.

How many letters can you miss on a Snellen chart?

20/40 indicates that the line you correctly read at 20 feet away can be read by a person with normal vision from 40 feet away. Even if you miss one or two letters on the smallest line you can read, you are still considered to have vision equal to that line.

What’s the worst eyesight?

20/30 to 20/60, this is considered mild vision loss, or near-normal vision. 20/70 to 20/160, this is considered moderate visual impairment, or moderate low vision. 20/200 or worse, this is considered severe visual impairment, or severe low vision.

Is minus 9 legally blind?

You will be looking at the first number for your left eye (labeled as “OS”) and right eye (labeled as “OD”). That first number represents diopters, which is the unit used to measure the correction of the lens that your eyes require. If you see that number as -2.5 or below, you, in all likelihood, are legally blind.

What are normal eye test results?

Normal results from an eye exam include: 20/20 vision. Good peripheral vision. Ability to distinguish various colors.

What does 1.75 mean for glasses?

Finally, the ADD number of +1.75 represents the power that needs to be “added” to the distance prescription to give the patient a clear vision at a close range for reading and near point activities. This number is usually absent in younger people’s eyeglass prescriptions.

What is normal eye number?

20/20″Normal” vision is 20/20. This means that the test subject sees the same line of letters at 20 feet that person with normal vision sees at 20 feet.

What is normal eye axis?

The axis is the lens meridian that does not contain cylinder power, defined by a number between 1 and 180 degrees. The eye doctor will determine the axis during a refraction (vision test). … People with a normal eye axis have strong and clear vision because the light is falling at the right place on the retina.

Is minus 2.75 eyesight bad?

Sph (Sphere) If you have a minus number, like -2.75, it means you’re short-sighted and find it more difficult to focus on distant objects. A plus number indicates long-sightedness, so objects up close appear more blurred or close vision is more tiring on the eyes.

Is 1.25 eye prescription bad?

Here are two examples: If your prescription reads +1.25, you are slightly farsighted. If your prescription reads -5, you are significantly nearsighted. The next column may be a “C” or “Cylinder,” and it’s used to describe astigmatism, which just means your eye isn’t perfectly round (like most people!).

How bad is minus vision?

The Numbers Generally, the further away from zero you go (whether the number is positive or negative), the worse your eyesight and the greater the need for vision correction. So +1.00 and -1.00 are quite modest; your eyesight isn’t too bad, as you only need 1 diopter of correction.