Is 1.5 eye sight bad?

If your number is between -0.25 and -2.00, you have mild nearsightedness. If your number is between -2.25 and -5.00, you have moderate nearsightedness. If your number is lower than -5.00, you have high nearsightedness.

What does +0.50 eye prescription mean?

The next number in the sample eyeglass prescription is -0.50. This number represents the “cylinder” part of the prescription which measures the degree of astigmatism, representing the difference in curvature and power between two points on the eye, separated by 90 degrees.

Is minus .50 eyesight bad?

Generally, the further away from zero (+ or -), the worse the eyesight. A number between +/-. 025 to +/-2.00 is considered mild, a number between +/-2.25 to +/- 5.00 is considered moderate, and a number greater than +/- 5.00 is considered severe. Eye prescriptions can change over time.

What do the numbers mean on my eye prescription?

On your prescription, you’ll see some letters followed by a series of numbers. The letters “OD” indicate that the prescription is for your right eye; “OS” represents your left eye. Your prescription, including both eyes, will generally look something like this: OD -4.00 -1.50 x 180 . OS +.50

What does a 1 75 add mean on an eyewear prescription?

Ultimately, a 1.75 add can be negative or positive. Let’s start with -1.75. A -1.75 eyewear prescription essentially signifies that you need some additional power to see some objects that are further away. Specifically, we are talking about things like watching television or objects or people at a distance when you are driving.

Do you need a different prescription for each eye?

A person may require a different eye prescription for each eye. Identify a + sign: Positive numbers, such as +1.00, explain how strong a lens needs to be to correct for farsightedness. Farsightedness means a person can see distant things but nearby objects appear blurry.

How are vision correction prescription numbers determined?

As a general rule of thumb, the further the number is from zero, the more vision correction is required. During the exam, the eye doctor determines the visual acuity of your eyes. Then these prescription numbers are listed in the prescription based on the vision correction needed to bring your eyes back into a normal range.