Doctor insights on:
What Do Prescription Numbers Mean In Eye Glasses
Please explain why is it that all i see in distances are blurry patches despite wearing farsighted single vision glasses?
The term for: This is antimetropia, and it is fairly common. ...Read more
Doubtful both eyes: Amblyopia is a condition in which an eye which is otherwise normal, sees less well. It is almost always caused by some eye malposition or refractive differencies between the two eyes in infancy and early childhood. The pattern of amblyopia becomes fixed if not treated by age 8 years. After that, exercises, etc. Cannot correct the condition. You probably have one normal eye and one seeing less well. ...Read more
It's a math formula: The prescription tells the lens maker how to shape the lens (glasses, contacts) that will best correct your vision. The first number is the amount of nearsightedness (-) or farsightedness (+) to be corrected. The next number is the amount of astigmatism to treat and the number after the "x" is the angle of the astigmatism to be treated. ...Read moreSee 1 more doctor answer
It means: There are many numbers that make up a eye glass prescription. They may include the amount of nearsighted or farsightedness, the amount of astigmatism, the location of the astigmatism, whether the glasses or single-vision or multi-vision, the amount of prism in the glasses, the amount of additional power for close work. There are other specifications as well. ...Read more
Would reading glasses make any different to your eye sight if you had eye tumours and is it bad to were reading glasses that you buy from asda ?
Why is it that all i see in distances are blurry patches despite wearing farsighted single vision glasses? I need some advice.
Lens power: These numbers describe the refractive power (strength) of the lens. Negative numbers represent a diverging lens which helps near-sighted people. Positive numbers represent a converging lens which helps far-sighted people. ...Read more
Nothing bad: The eye cannot be damaged if you wear a prescription that is not correct. It will certainly cause strain and possible headaches, but as long as you are an adult, the worst case will be discomfort. The one exception is that children (especially those under age 7) who are not using the correct prescription may develop permanent vision loss. ...Read moreSee 1 more doctor answer
Antimetropia: The term is antimetropia.Get a more detailed answer ›
Can you tell me about what it means by visual acuity not exceeding 6/60 or 20/200 (snellen) in the better eye with correcting lenses?
Lowered vision: The 20/200 line (6/60 in metric units) is usually the letters below the big "e" on the standard vision charts. This is also the level for legal blindness in most states. It is quite a lowering of vision and means that with the best eyeglass correction, only that level can be obtained. ...Read more
Average vision: The eye chart compares your ability to see a specific size object at a determined distance (usually 20 feet) to the average person. If you can read the small letters at the 20/20 line, it means that you can see an object at 20 feet as well as the average person. If you have 20/30, it means that you have to be 20 feet from an object to see it when the average person can see it from 30 feet away. ...Read moreSee 1 more doctor answer
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