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Doctor insights on: How To Calculate Computer Glasses Prescription

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How to calculate the intermediate power for computer glasses from the near vision prescription?

How to calculate the intermediate power for computer glasses from the near vision prescription?

Subtract 1.00: The intermediate strength is the reading prescription minus 1 diopter typically. However, your eye doctor can adjust this strength based on the actual distance your computer sits from you. ...Read more

Dr. Tim Conrad
797 Doctors shared insights

Glasses (Definition)

Glasses is a term that describes a pair of lenses that are placed in a frame to be worn to correct faulty vision ...Read more


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Would prescription computer glasses damage my perfect eyesight? How does anti glare help

Would prescription computer glasses damage my perfect eyesight? How does anti glare help

No and see below: Glasses do not change your eyes. Anti-reflective coatings help reduce the glare from the glasses themselves. They also make the glasses more "clear". ...Read more

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I have myopia and astigmatism and now iam wearing prescription glasses can I use this glasses when reading books or in computer. Thank u?

I have myopia and astigmatism and now iam wearing prescription glasses can I use this glasses when reading books or in computer. Thank u?

Absolutely: Correction of your refractive error improves your visual clarity and generally lessens visual strain and therefore improves comfort. Enjoy. ...Read more

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Is wearing weaker prescription glasses for when I am on the computer a bad thing to do? I'm nearsighted but I still need glasses to see the computer

Is wearing weaker prescription glasses for when I am on the computer a bad thing to do? I'm nearsighted but I still need glasses to see the computer

Not bad: You don't need your full correction to see the computer. As long as you are comfortable in them and you are seeing the computer screen well, then you should be fine. Don't use someone else's glasses ad they might have astigmatism or prism correction that you don't need. Take care. ...Read more

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I am shortsighted and have a prescription of -1.00 in each eye. Can I use my glasses to read or use the computer even if I don't need it?

I am shortsighted and have a prescription of -1.00 in each eye. Can I use my glasses to read or use the computer even if I don't need it?

Myopia: Yes you can, but you may notice that you do not need to get as close to the screen. When you reach your presbyopic years this will be a blessing in disguise. ...Read more

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Should I wear my nearsighted glasses for reading and looking at computer? My prescription is -1.75 rt eye, -.75 left eye. Will it make vision worse?

Should I wear my nearsighted glasses for reading and looking at computer? My prescription is -1.75 rt eye, -.75 left eye. Will it make vision worse?

Q1: no. Q2: maybe.: If you are "nearsighted, " that means you need your glasses for distance, like for driving, but not reading. Conversely, if you are "farsighted" you need your glasses for up-close vision, like reading but not driving. Using your distance lenses for reading will stress your eyes, and may leave you with a headache and even some mild fatigue. Make sure your prescription is current. ...Read more

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Can eye strain cause dizziness and light head all the time? How long can it last? Eyesight is 20/15, dr says no problems. Prescription for computer glasses.

Can eye strain cause dizziness and light head all the time? How long can it last? Eyesight is 20/15, dr says no problems. Prescription for computer glasses.

Dizziness and: Lightheaded feeling usually not from eyestrain. Due to the vague nature of symptoms many possibilities include low blood pressure, anemia, migraine, abnormal blood sugar. You will need to be seen to get worked up. ...Read more

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How soon after lasik should I get computer glasses? I know the prescription can change. Now that the myopia is gone my right eye feels strained.

How soon after lasik should I get computer glasses? I know the prescription can change. Now that the myopia is gone my right eye feels strained.

Within 1 week: Assuming your lasik surgery went well, you can go out and get computer glasses. If you are concerned your prescription might still change, get a temporary pair of over-the-counter glasses to start you off. ...Read more

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What is the weakest glasses prescription you can get?

What is the weakest glasses prescription you can get?

No prescription: Plain glass lenses can be worn for those who like how they look in glasses. If you are blurred when you read or look at distances, even a mild prescription may help you. Usually, people can avoid wearing glasses if they have prescriptions of up to 0.5 diopters; some individuals may feel more visually comfortable with even this low of a glasses prescription. ...Read more

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What are the symptoms of a wrong glasses prescription?

Symptoms include: Continued blurry vision in one or both eyes, headaches from eye strain, dizziness due to lack of focus. Even nausea and vertigo if the prescription is way off from what your eyes need. Don't hesitate to have this rechecked if you feel the glasses are giving you trouble. ...Read more

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Should I use my glasses prescription for contact lenses?

Should I use my glasses prescription for contact lenses?

Naah: Usually a little different, especially as the prescription number gets higher. Also, you have to be fitted with a right fit, not just prescription power. ...Read more

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Can a "strong" glasses prescription cause long term dizziness?

Can a "strong" glasses prescription cause long term dizziness?

Shouldn't: If the prescription is proper, then you should adapt quickly and dizziness should not occur. If the dizziness persists then the glass might need upgrading. ...Read more

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Is it okay to convert my glasses prescription to my contact lens prescription?

Is it okay to convert my glasses prescription to my contact lens prescription?

Not really: The contact lens rx is determined from a refraction for glasses - sometimes trial fitting is necessary since the actual numbers are different due to an optical property called vertex distance. ...Read more

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What would you suggest I do to convert my glasses prescription to contact lens prescription?

Slightly tricky: Mostly straightforward if there is no astigmatism but a little involved if there is astigmatism. I assume you are ordering lenses online and will need that conversion. There is also some experience functions depending upon the type of lens. Check with your ophthalmologist to get this done for you. Optometrists are unlikely to do it as they prefer to sell you lenses. ...Read more

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Could you tell me if my contact lens prescription is -4.00/-4.50 what is my glasses prescription?

Close: Commonly it is slightly higer like -4.50 and -5.00 but this depends in part on the goal and how long since your last examination. Also at your age there is the issue of bifocals due to near vision needs. Useful to check with your ophthalmologist for the best information on this. ...Read more

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My contact lens prescription is significantly different from my glasses prescription. Is this normal?

My contact lens prescription is significantly different from my glasses prescription. Is this normal?

A small difference: Is normal. A significant difference would be unusual but it could just be the way it is written in a different format. ...Read more

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My contact lens prescription is different from my glasses prescription. Is it supposed to be like that?

My contact lens prescription is different from my glasses prescription. Is it supposed to be like that?

Yes: The optical principle is lens effectivity. As any lens is moved away from your eye it becomes inherently more powerful (positive) the inverse is also true, as a lens is moved to eye, becomes weaker (negative). So contacts and glasses are adjusted accordingly only if it will affect the final clinical outcome. ...Read more

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Hi! I have 25 years and I have an 0.50 astigmatism. I have a cylinder glasses prescription. Should I wear them or not?

Hi! I have 25 years and I have an 0.50 astigmatism. I have a cylinder glasses prescription. Should I wear them or not?

When driving: Yes, wear the glasses when driving and any other time that you would like to see better. Also, wearing the glasses may prevent eye strain if you have any. I agree that the prescription is small, but sometimes a little bit better vision prevents a car accident. ...Read more

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Why is my contact lens and glasses prescription different?

Why is my contact lens and glasses prescription different?

Numbers game: Fitting cl is an art form as much as science. When the eyeglass refraction is placed in a cl if the number is large enough the strength of the contact may be different to cause good vision. The fit can also change the numbers. These are called "fudge factors'. The numbers are not as important as the ability to see wella nd comfortably. ...Read more

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Can doctors tell me what does my glasses prescription mean?

Can doctors tell me what does my glasses prescription mean?

Lense power: The prescription for eyeglasses is the formula that the lense maker (optician) needs to provide the correct lense for your eyeglasses. On the form you will see od: right eye; os :left eye; power : strength ; cylinder: astigmatism; add: near vision correction for those over 40 and sometimes prism: for eye alignment. ...Read more

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Would anything happen if I didn't hav my glasses prescription changed if I know it is wrong?

Would anything happen if I didn't hav my glasses prescription changed if I know it is wrong?

No: If your glasses prescription changed & you don't update, or if you are wearing glasses with the wrong prescription, thea two won't adversely affect your eye health, but your vision will not be optimally in focus. Some people feel eye strain if their glasses are incorrect. A resolution would be to have yor eye md refract your eyes for the correct prescription. ...Read more

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I was diagnosed with myopia and in my new glasses prescription there is no minus in front the number, are there any mistake?

I was diagnosed with myopia and in my new glasses prescription there is no minus in front the number, are there any mistake?

Yes: This is probably a sign that was not placed there. Is there a plus sign before the numbers. Check with the eye doctor that gave you the prescription! ...Read more

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I have a plus Sphere on my glasses prescription, I've read that this is to correct long-sightedness, but my problem is that I can't see the distance..

Correct Rx: + sphere correction is given for farsightedness. + Rx's are also used for people with no distance prescription, for reading. In some cases one person' sprescription for reading may be a farsighted person's prescription for distance. ...Read more

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Can wearing an old glasses prescription for too long make you vomit?

Can wearing an old glasses prescription for too long make you vomit?

Old glasses: Yes if it does not meet your current visual requirement. ...Read more

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I wear glasses (prescription) but only whn my eyes still constantly hurts in the sun watching tv etc vwey sensitive. Would you recommend contacts?

I wear glasses (prescription) but only whn my eyes still constantly hurts in the sun watching tv etc vwey sensitive. Would you recommend contacts?

Dry eye treatment: Artificial tears, ointment at night, low dose topical steroids, restasis, punctal plugs, and others are treatments for dry eye. Your symptoms sound consistent with dry eye. ...Read more

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My glasses prescription is the following: sphere (-10.0), cylinder (-2.0), axis (176). For tax purposes, I need to know if this characterizes someone as legally blind. Not sure if this is 20/200?

My glasses prescription is the following: sphere (-10.0), cylinder (-2.0), axis (176). For tax purposes, I need to know if this characterizes someone as legally blind. Not sure if this is 20/200?

No: Legal blindness is determined and classified as vision with correction. 20/200 is one of the criteria and classification for legal blindness, but this is determined after you put you glasses on. ...Read more