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Doctor insights on: Prism Glasses

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What are prism glasses?

What are prism glasses?

Prism: Is a type of lens feature that bends the light to adjust for misaligned eyes. Prisms are also those interesting lenses that can separate white light into the rainbow colors that make it. ...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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Could you tell me where to get prism glasses?

Could you tell me where to get prism glasses?

Any optical shop: Prism glasses can be ordered from most any optical shop with a prescription from your eye doctor. ...Read more

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Can hypertropia in a young adult be fixed with prism glasses?

Can hypertropia in a young adult be fixed with prism glasses?

Depends: On how much deviation there is, 2-3 prism diopters are well tolerated, above that it depends. ...Read more

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Are prism glasses effective for strabismus?

Are prism glasses effective for strabismus?

Sometimes: Small amounts of ocular misalignment can be successfully managed with prism in glasses. Larger amounts of misalignment require surgery to repair. ...Read more

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I am seeing an occupational therapist for my recent diagnosis. The exercises give me debilitating headaches and the prism glasses only help a moderate amount. I'm exhausted. Any thoughts or ideas?

I am seeing an occupational therapist for my recent diagnosis. The exercises give me debilitating headaches and the prism glasses only help a moderate amount. I'm exhausted. Any thoughts or ideas?

Unusual: Generally occupational therapy activity is pain free and might lead to headaches only if over done. Discuss this with the OT person taking care of you. Prism glasses are used to minimize doubling and eyestrain when the eyes do not track well together. If you have this problem, see a ophthalmologist with expertise in strabismus (eye muscle problems). ...Read more

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Could prism glasses help reduce the look of lazy eye (strabismus)?

Could prism glasses help reduce the look of lazy eye (strabismus)?

Sometimes: Prisms will shift the image and can improve the appearance of modest strabismus. But if the turning of the 'lazy eye' is too much, then the prism needed for cosmetic correction would be too thick and would itself disturb the cosmetics. ...Read more

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Who should I see about one slightly bulging eye and sudden lazy eye if I've had an eye exam and was just prescribed prism glasses?

Who should I see about one slightly bulging eye and sudden lazy eye if I've had an eye exam and was just prescribed prism glasses?

Ophthalmologist: You need to see a medical eye doctor, not an optometrist. The most common cause of a bulging eye is thyroid disease, so you may want to involve your medical doctor as well! ...Read more

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Are there any ways to reduce diplopia caused by divergence insufficiency other than using prisms in glasses? (I.e. Exercises to do?)

Are there any ways to reduce diplopia caused by divergence insufficiency other than using prisms in glasses? (I.e. Exercises to do?)

Work w/ good Dr.: Find an experienced eye doctor and discuss the possibilities. Many adults are not able to correct such problems w/out prisms. I'm one. Ask about contact lense therapy and even surgical options too. I agree - it would be great to find exercises that work. Best! ...Read more

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I see double vision 24/7. I'm 20. And I did get prism eye glasses but they give me eye strain and headaches. Will I have this forever now? I'm worried

I see double vision 24/7. I'm 20. And I did get prism eye glasses but they give me eye strain and headaches. Will I have this forever now? I'm worried

Adjustment: It may be that you haven't fully adapted to the prismatic correction in your glasses, or adjustment may be necessary. Call your eye doc to have a checkup. You may need more or less prism power. Double vision can be very frustrating and adjustments are often needed early in in the treatment. Hopefully your symptoms will resolve quickly. ...Read more

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Can you tell me if I switch from glasses (prism lens) to contacts (different prescription) will that cause unusual discomfort?

Can you tell me if I switch from glasses (prism lens) to contacts (different prescription) will that cause unusual discomfort?

Depends: If you have double vision when you don't wear your glasses with prism, then you will have it with contact lenses. If double vision is not a problem for you, then contacts will likely work. ...Read more

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Can you tell me if you switch from glasses (prism lens) to contacts (different prescription) will that cause unusual discomfort?

Can you tell me if you switch from glasses (prism lens) to contacts (different prescription) will that cause unusual discomfort?

It can: Contact lenses do not correct for ocular misalignment like prism glasses can. If you need prism to avoid discomfort, then contact lenses are not a good choice for you. ...Read more

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I was wondering what are prisms in eye glasses?

I was wondering what are prisms in eye glasses?

Prism: Is used to compensate for misalignment of the eyes. For example, if one eye turns in compared to the other, prism can be used so the eyes can work together. ...Read more

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I have been having side by side double vision mainly when driving or watching tv for 3-4 years. Have had prisms put in glasses 2 times now & sometime?

I have been having side by side double vision mainly when driving or watching tv for 3-4 years. Have had prisms put in glasses 2 times now & sometime?

Divergence palsy: When you look at a distance, the in-turning muscles relax, the out-turning muscles tighten. In your case, the out-turning muscles are week- could be medical side-effect, stroke effect, decompensated eye crossing, other neurologic disorder.
If the amount of prisms becomes excessive, have eye muscle surgery.
Contac a "pediatric" ophthalmologist who does a lot of muscle surgery. ...Read more

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Doctor says that my nine year old has convergence insufficiency and should go for vision therapy instead of Prism in her glasses. Agree?

Doctor says that my nine year old has convergence insufficiency and should go for vision therapy instead of Prism in her glasses. Agree?

Get another opinion.: I will make a guess that the doctor who said that is an optometrist and not an ophthalmologist. Many well designed research studies have proven that vision therapy is not effective (and it's usually expensive). Please take your child to an ophthalmologist -- if there is an eye muscle imbalance, they can explain what treatments WILL be effective. ...Read more

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I have prism lenses in my glasses. If I look at things, they're blurry. If I work to focus my eyes & squint, they become clear. Why is it an effort?

I have prism lenses in my glasses. If I look at things, they're blurry. If I work to focus my eyes & squint, they become clear. Why is it an effort?

Depends: Is this vision problem with near vision and distance vision or near/distance vision only? Prism in your lenses is used to help amblyopia commonly known as lazy eye, or problems with near convergence. This is when the eyes must come together to see something up close. The lens has to work harder to see things close up. Best to discuss these Issues with your eye doctor. Sorry not more helpful. Dr R ...Read more

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Why am I having diplopia must now wear prisms in my eye glasses can't get an answer as to why.

Why am I having diplopia must now wear prisms in my eye glasses can't get an answer as to why.

Double vision: Diplopia or double vision is caused by the two eyes not moving in unison. Usually the eye movements of one eye are weaker than the other. An eye exam, imaging studies and a neurologist who specializes in the eyes (neuro-ophthamologist) will provide some answers. ...Read more

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Can glasses without a prism improve he look of ambioplyia? My new glasses seem to be making it worse.

Can glasses without a prism improve he look of ambioplyia? My new glasses seem to be making it worse.

Prism glasses: Prism glasses can be very thick and heavy due to the prism in combination with you'd prescription. If cosmetically undesirable, you could consider surgery to fix or improvement the alignment of the eyes to eliminate or decrease tge prism needed. You should see an eye doctor who specializes in amblyopia and strabismus. ...Read more

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I got new glasses with bifocals. Things still aren't crisp. Old one were for farsighted&had a prism in them. New1's don't have rprism. Do I need prism?

I got new glasses with bifocals. Things still aren't crisp. Old one were for farsighted&had a prism in them. New1's don't have rprism. Do I need prism?

Most likely yes: Prisms adjust for minor muscle imbalances to alignment. If your old spectacles has a prism, your new ones will as well. ...Read more

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What is my eye issue? I have issues seeing at all in light, reflection of light, and bright colors. I have glasses and a prism in them.

What is my eye issue? I have issues seeing at all in light, reflection of light, and bright colors. I have glasses and a prism in them.

Have your prism: Checked, and make sure it's placed correctly, so that it's not causing a prismatic effect. Your optician or optometrist should be able to assist you. ...Read more

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I made new glasses in october with -1, 75 dioptria. Now I don`t see well, got checked, it`s now -2, 75.My hba1c is 3, 26%.Could be coz of the low hba1c? Thx

I made new glasses in october with -1, 75 dioptria. Now I don`t see well, got checked, it`s now -2, 75.My hba1c is 3, 26%.Could be coz of the low hba1c? Thx

No: Being skinny, or low hb a1c does not explain your refractive errors in the eye. It would be prudent for you to exercise and eat some protein rich foods like beans, lentils, legumes, nuts and lean meats. ...Read more

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At what age is it typical to need reading glasses in the u.S.?

At what age is it typical to need reading glasses in the u.S.?

Forties: On average most people need to start using readers in their forties. It is a bell curve so certainly some people will need them earlier and some later. ...Read more

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How to get me new glasses?

How to get me new glasses?

Evaluation at eyedoc: New glasses can be made for you at optical shops and in some cases on line. You will need an evaluation, preferably at the office of an ophthalmologist who can best detect if there is anything else wrong with your eyes. Then you will receive an eyeglass prescription which has the information need to make proper eyeglasses from wherever you choose to go. ...Read more

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Who takes +5 strength glasses?

Hyperopic: Glasses on the plus (+) side are used for people who are farsighted and/or need extra help at near. They are magnifying lenses and if you look through them, you can enlarge the objects viewed. This is one of the standard eyeglasses needs although a little higher than most. ...Read more

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How do glasses work on a person?

Glasses: Glasses work by focusing light onto the center of the retina (which is the part of the eye that sees). Without glasses, many individuals eyes do not focus the light in the correct location. ...Read more

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Is the need for glasses hereditary?

Yes: But we don't understand the specifics very well. Having parents that wear glasses increases the chances that you will need glasses. ...Read more