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Doctor insights on: What Are Varifocal Glasses

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What are multifocal glasses lenses?

What are multifocal glasses lenses?

Bifocal substitute: These are eyeglass lenses with a continuous grind so no line is visible. They offer a large distance and near area for correction and a narrower central band of intermediate clarity. They cost a little more but offer a cosmetic and sometimes optical advantage for those in the presbyopic age. ...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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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

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Glasses- polycarbonate lenses, what are these and what are the benefits?

Glasses- polycarbonate lenses, what are these and what are the benefits?

Polycarbonate: Polycarbonate is a shatter-resistant plastic that is used in all children's glasses and in safety glasses. It is also used for certain types of glasses frames because of its toughness. ...Read more

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What are the best contacts lenses for nearsighted?

What are the best contacts lenses for nearsighted?

Depends: There are many different types of contact lenses. The best depends on your particular eyes and how you plan to wear them. Your eye doctor can give you the best recommendation. ...Read more

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What are the pros of eye glasses over contact lenses?

What are the pros of eye glasses over contact lenses?

Glasses vs contacts: First of all, glasses are cheaper and there are no side effects to glasses. They're very easy to use and can offer protection to your eyes. Contact lenses, only offer cosmetic advantages, except in very rare eye conditions, which are solely treated with contacts, but those are rare. Contact lenses need to be cared for & fit properly, are more expensive, & can have side effects or even intolerance. ...Read more

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What are contacts for astigmatism versus regular contacts?

What are contacts for astigmatism versus regular contacts?

Toric contacts: Toric contact lens correct astigmatism and either hyperopia or myopia. Regular lens do not correct astigmatism and are either for hyperopia or myopia. The lenses are otherwise the same. ...Read more

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What are refractive errors?

What are refractive errors?

Focusing: Refractive errors are intrinsic poor focus of the eyes. It may mean your eyeball is too long or short or the lens or cornea are of inappropriate power. In most cases, glasses or contact lenses can correct the refractive error fully. ...Read more

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What are the best lenses for strabismus? (exo) are toric or multifocals better? Doctor said there can't be surgery at this stage. Also, are progressive/bifocal glasses better than single vision?

What are the best lenses for strabismus? (exo) are toric or multifocals better? Doctor said there can't be surgery at this stage. Also, are progressive/bifocal glasses better than single vision?

Lenses may not help: If you have a lazy eye, no lens will "fix" it. However, any lens that gets you to your best corrected vision will help but i usually recommend staying away from multifocals in lazy eyes. If you still have a muscle problem--this should be addressed by a strabismus surgeon. ...Read more

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What are the risks of lasik for farsighted eyes?

What are the risks of lasik for farsighted eyes?

Fair: Results not as predictable as with near-sighted. Otherwise, the same- halos, dry eye, blurred vision etc. ...Read more

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What are these new cataract lenses?

What are these new cataract lenses?

Multifocal vision: The new iol (intraocular lenses) are of 2 kinds, one allow you to see far and near (like a bifocal contact lens) and the other corrects for astigmatism. There is i believe one on the way that might do both but not yet on the market. Since cataract patients are senior the multifocal lens is a great advantage (but somewhat costly). ...Read more

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Are glasses and corrective lenses the same thing?

Yes, but: Glasses are corrective lenses, but not all corrective lenses are glasses. Contact lenses would also fall into this description. You could even add intraocular lenses to the list if you were being comprehensive. ...Read more

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What are the different types of eye refraction corrections?

What are the different types of  eye refraction corrections?

Several: Nearsighted (myopia), farsighted (hyperopia), older age near vision (presbyopia) along with astigmatism (eye is oval) and distortions caused by disease or surgery. ...Read more

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What are cataract implant lenses?

What are cataract implant lenses?

Intraocular lenses: Current practice of cataract treatment involves removing the cataractous lens and replacing it with an intraocular lens (which can be called an implant lens). Almost all cases of this surgery end with the implantation of such lenses. ...Read more

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What are myopias?

What are myopias?

Nearsightedness: Myopes have eyes that are too long for their natural focusing power. They need eyeglasses or contacts that minify the light which causes the focal point to go more towards the back of the eye where the retina receives the image. (hyperopes need magnifying lenses). Your ophthalmologist can provide the best correction for this condition. ...Read more

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What are the disadvantages of intraocular lenses?

What are the disadvantages of intraocular lenses?

Disadvantages: Disadvantages: may still need glasses, may need a Yag laser after implant; risk of high pressure after surgery usually unrelated to a well placed implant; other general risks of surgery are rare/very rare: risk of infection, loss of vision, loss of eye, death. lFull answer: Cataract Surgery Options at eyedoc2020.blogspot.com ...Read more

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Are there any glasses that correct my accommodative esotropia?

Are there any glasses that correct my accommodative esotropia?

Yes: Glasses that fully correct your hyperopia with or without a bifocal is the normal treatment. Contact lenses work as well. See an ophthalmologist for this. ...Read more

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Glasses for computer use? What are those? Different from reading glasses?

Age dependent: Young people have sufficiently flexible eyes that special glasses for computer work are not necessary. Over age 40 is the presbyopic era when readers are required. For sustained computer work it can be helpful to have a bifocal with an intermediate distance segment on top and a near segment below. This has provided great relief for this task in many of my patients. ...Read more

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What are polarized lenses good for?

Seeing more: They will allow you to see more and more clearly. Much glare is reduced. Especially good for seeing fish in a stream. ...Read more

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Can you please describe the downsides of mixing refractive indices for eye glasses lenses?

Can you please describe the downsides of mixing refractive indices for eye glasses lenses?

Don't do it: Here are the issues: glasses will look funny; this may induce a difference in the way things look between eyes making the glasses intolerable. If you go ahead and do this and you get used to it, all of your future glasses will have to be made in the same, unusual way. ...Read more

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What are corneal opacities?

What are corneal opacities?

Corneal opacities: Corneal opacities can be cause by anything that injuries the cornea or causes scarring of the cornea. Foreign bodies in the eye are common causes, late effects of severe trauma, various infections, certain congenital or genetic conditions. The image below shows you what one kind of opacity looks like. Do a google search under 'images' for corneal opacity and you will see lots. ...Read more

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I need new glasses.Whats best, reading, bi-focal or varifocal?

I need new glasses.Whats best, reading, bi-focal or varifocal?

Depends: That is not an easy question to answer. Your age, eye measurements, an visual needs are important in making a decision. See an eye doctor for advice. ...Read more

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Glasses for exotrophic?

Glasses for exotrophic?

Sometimes: Glasses with prisms or with minus correction are sometimes used to decrease the amount of exotropia or minimize symptoms. ...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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Will sunlight spoil my glasses?

No: Most glasses are designed to block ultraviolet light and will protect your eyes. Sunlight won't damage the lenses with ordinary exposure. Some very old plastic lenses may oxidize and turn yellowish but in general, glasses lenses are designed to resist photodegradation. ...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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Why do little kids need glasses?

Why do little kids need glasses?

To see better: Kids can have visual defects that require eyeglass correction. If they are hyperopic they might have eyes out of alignment due to this. If very myopic, they might need them simply to see the world. In both cases the glasses improve vision and eye position and function. This can be sorted out by a pediatric ophthalmologist. ...Read more

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Can glasses get worse over time?

No : Your eyes cam became more nearsighted or farsighted with time. Your glasses will have to change according to the prescription needed to see better. ...Read more

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How do glasses assist with vision?

How do glasses assist with vision?

Improve focus: The eyes sometimes are imperfect and the focus cannot be naturally put in the proper place for best vision. Glasses bend the light according to an amount measured by your ophthalmologist so that the focus is on the best place on the retina for the light to be received at its sharpest. ...Read more

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Who can build some special glasses?

Optical shop: Most specialty opticians, usually in smaller offices, can provide special needs glasses. You need a prescription from your ophthalmologist and a good analysis of your needs so they can construct them. ...Read more

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What can I do to fix a glasses tan?

Meaning?: Either there is a misinterpretation or a misspelling here. What is a "glasses tan". Re-reply with the correct version please. ...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

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If I use glasses can I use contact?

If I use glasses can I use contact?

Most likely: Most people who have glasses could also use contacts but your eye doctor can tell you whether you are a good candidate or not. ...Read more

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Could glasses improve your eyesight?

Depends: Glasses made properly will allow clear vision - which is an improvement. Glasses will not alter the underlying power of the eyes so wearing them will make no change in the eyes needs for glasses. ...Read more

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How can you tell if you need glasses?

Easy: If you cannot see to perform your daily activities and/or if the effort of focusing is causing you issues like fatigue or headaches, then you need glasses. ...Read more

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How do I fill in scratches in glasses?

You can't: Anything you put on to attempt to cover a scratch will degrade the optics of your lenses. ...Read more

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Can glasses and contacts worsen vision?

Glasses and contacts: Significantly help your vision if they are fit properly. In addition, your eyes will not get weaker by wearing them on a regular basis. ...Read more

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How do I improve sight besides glasses?

Contacts, LASIK: I am guessing that you are seeking a non-mechanical, non-surgical means. "natural" remedies and exercises do not alter the basic structure of the eye and so do not work to change vision. You will have to seek the usual remedies, generally highly effective, from your ophthalmologist. ...Read more