Glasses and Eyewear

Glasses or spectacles are frames which hold corrective lenses and are worn in front of the eyes on the face. Frames come in many shapes, colors and styles. Lenses help correct; nearsightedness, farsightedness and other eye disorders. Some spectacles are magnifiers and opera glasses. Ask questions here about lenses, bifocals, progressive lenses, and prescriptions here.

1,489 Questions
Glasses and Eyewear

Do blue light blocking glasses really work?

Because the product is relatively new, there isn’t a lot of definitive research on the subject. According to most advertisements, the benefits of blue light blocking glasses include improved sleep habits, less eye strain, and prevention of eye disease. But whether the product delivers on the promise is still up for debate.

The American Academy of Ophthalmology doesn’t endorse the glasses, stating that “there is no evidence that the kind or amount of light coming from computer screens is damaging to the eyes.” Other eye professionals, including The Vision Council and Samuel Pierce, former president of the American Optometric Association, will tell you that they can be helpful in reducing eye strain. Others have suggested that those who experience relief from the glasses may only be experiencing a placebo effect.

The general consensus so far seems to be that while there is no solid data backing up their effectiveness, many people who’ve tried the glasses claim to have found relief from wearing them.

Glasses and Eyewear

How do you clean stubborn film from eyeglasses?

In some warm water put a teaspoon of bicarbonate of soda, which is also known as baking powder, wash galsses with this , it might do the trick

Glasses and Eyewear

How can you convert an optometrist prescription of Right -6.00 plus 0.75 x95 Left -7.25 plus 0.75 x95 to a contact lens prescription?

Contact prescriptions are a whole different thing. You have to have a contact lens fitting or evaluation which includes K Readings. Contacts will be a different RX. The RX you have does not look as if an OD (Optometrist) wrote it, however. Usually ODs (optometrists) write in minus cylinder and D.O.s (ophthalmologists) use plus cylinder for Rx's. The Rx for glasses has some cylinder and most likely with a +.75 cylinder will require fitting of a toric lens. However, in some cases patients see better with a sherical contact lenses. There are different base curves and diameters which factor into a contact lens Rx's. Most D.O.s don't really like fitting torics because the patient goes through several sets of trial lenses and has more "in chair" time. You will be charged additional fees for a final contact lens prescription. After all the time and fitting, you still may not end up with a contact lens prescription. If you decide that you want contacts, go to an OD because they have more practice with contacts and they usually have a tech that does most of the fitting and training. D.O.s do surgery, and feel that fitting contacts is a waste of their time as well as waste of tech time.. Before going in for contact lenses, practice touching your eye without blinking. This will save you a lot of frustrating time in front of a bored tech! Remember, you are the patient. Request a review of options. One final thing, you should leave with (by law whether you have paid or not) a prescription in hand. Wait to pay for fitting until the doc has handed you the contact lens RX or you may have a hard time getting a refund for money spent for your wasted time. If you do get your final contact lens Rx, do not feel obligated to buy the contacts from the optometrist. Good Luck! Jace

Glasses and Eyewear

Is always wearing glasses bad for your vision?

Continually wearing glasses may cause the muscles in your eyes to weaken, making your vision worse.

Child Health
Glasses and Eyewear

How do you get your two-year-old to wear their glasses?

I had a friend who would not let her 2 year old out of the crib without his glasses on. The first week was hell but it worked rather well. Whenever he took them off He had to go into the crib until he would keep them on.

It can take a while for your child to get used to the glasses, though often, once they realize they're seeing better, they'll happily wear them. The trick is getting them to wear them long enough to really see the difference. It's important to keep a good attitude, and make sure that your child sees that you're happy when they're wearing their glasses. When my daughter first got glasses, she'd take them off after a couple of minutes. We'd just put them back on and tell her she needed to wear them. If she fought or took them off again, we'd set them aside for 5 minutes and try again. It's important to be consistent and keep putting them on, but it's also important not to create unpleasant associations for your child and their glasses. I've heard of parents using stickers or stars as a way to encourage their kids to wear their glasses.

Glasses and Eyewear
Laser Eye Surgery

How do you get astigmatism?

It is genetic.

English Alphabet History
APA Format
Glasses and Eyewear

Would a real narcissist tell you that you could do better than to be with them?

Narcissists continually test their companions/mates/spouses - "If she knows my true character will she abandon me"? It would be a mistake to attribute this kind of behavior to altruistic motives. From my experience with an N, they would never say that anyone is better than them. It is probably just a trick to get supply out of you, make you feel sorry for him, because believe me, they don't think anyone is better than them. Yes, to manipulate you.

Glasses and Eyewear
Contact Lenses

What is od and OS in eye prescription?

OD stands for oculus dexter and indicates the RIGHT eye

OS stands for oculus sinister and indicates the LEFT eye

OU stands for oculus Uterque and indicates BOTH eyes

I just wanted to say THANK YOU TO WHOMEVER ANSWERED THIS QUESTION!! I came here searching for the answer to this same exact question and found this discussion which answered my question perfectly! So once again, thank you thank you thank you!! :-)

Sincerely, Jenna Spier

Head, Ears, and Nose
Glasses and Eyewear

What is a very hard bump on the right side of the head about an inch from the edge of the ear that hurts when you push on it?

Hard to tell without more information, like location (Which side of the ear?), physical appearance (red, swollen, hot?), and onset of symptoms (when did it start bothering you, and what were you doing just before you stared feeling it?). It could be anything from an ingrown hair to a tumor. There are muscles under the skin as well, and they can cramp or spasm, making it feel like a bump, and would be painful. And if you have ever had your head cut by broken glass (like in a car accident), tiny pieces of glass have been known to push their way back to the surface of the skin even years later. My little sister may have what you are describing.. she has a hard bump about the size of a quarter on the anterior part of her left ear next to the lobe. She says it doesnt hurt her when you touch it. The bump is pretty noticeable but there's no redness around the area. We're confused as to what it is too. She's had it for maybe a week and she will be seeing a doctor about it soon. I'm sorry I havent been able to answer your question but maybe it will be comforting to know other people may have the same condition.

Kawasaki Motorcycles
Glasses and Eyewear

What year were portraits first placed in bellowed glass frames with wood backings?

FramesI have pondered over this question for quite some time, trying to find an exact answer. The best I can do is offer you these links to some very insightful Web sites that discuss the origins of picture frames:

The third link provided is for an art historian specializing in the history of picture frames.

Glasses and Eyewear
Contact Lenses

How do you help a poor eye sight in a pharmacy?

Glasses and contact lenses are very effective ways of correcting poor eyesight, also using natural lighting, rather than fluorescent lighting helps.

Glasses and Eyewear

Does Paula Zahn wear glasses?

Yes. Noline bifocals for reading,close work& driving. not full time

Glasses and Eyewear

Can an astigmatism get worse?

Astigmatism is only a particular version of short or long sight, so it can get worse or better throughout life.Statistically astigmatism, for the population as a whole, gets worse through the growth years up to about 22 years of age, and then slowly declines until it shows an tendency to increase after about 60 years of age.

There is plenty of room, however, for any particular eye or pair of eyes to do whatever they like.

According to Dr. Tan Quach of Adelaide, Australia:

Astigmatism can indeed get worse. the cause of this, whether it be pathological (ie post injury) or hereditary may influence whether or not it worsens.

Typically though, it does get worse with age. i believe it is unlikely that it will revert to normal, however i am unable to obtain clinical evidence of this. there is definitely the chance that it will remain unchanged throughout life.

The good news is, through technological advances, patients with astigmatism can now use the more comfortable, soft contact lens. colour lens are also available. Finally, refractive surgery may also prove benficial for some patients.

Glasses and Eyewear

Is reading in the dark bad for your eyes?


According to "":

Most experts agree that reading in low light does not damage your eyes. It can cause eye strain, however, which has a number of unpleasant temporary symptoms and possibly some long-term effects.

When the room light is low, your eye adjusts in several ways. First, the rod and cone cells on the retina begin to produce more light-sensitive chemicals. These light-sensitive chemicals are the first step in detecting the light, converting it to an electrical signal and transmitting that electrical signal to the brain. Second, the iris muscles relax, which causes the opening of your eye, the pupil, to become very large. This allows your eye to collect as much light as possible. Finally, the nerve cells in the retina adapt so that they can work in low light. These three changes take about 20 minutes to 2 hours, but they increase your sensitivity to low light by about 10,000 times.

When you read, your eye must be able to focus an image of the words onto your retina. To do this, the iris, as well as the muscles that control the shape of your lens, must contract to keep the focused image on the retina. If you read in low light, your visual muscles get mixed signals: Relax to collect the most light, but at the same time, contract to maintain the focused image. When that object is poorly lit, focusing becomes even more difficult because the contrast between the words and the page is not as great, which decreases the eye's ability to distinguish visual detail. That ability is called visual acuity. Your eyes have to work harder to separate the words from the page, which strains your eye muscles. Consider this to be strenuous exercise for your eye muscles. So your eye muscles will ache, much as your arm muscles and leg muscles become sore after strenuous exercise.

When your eyes are working this hard for a long period of time, the strain may cause a number of physical effects. Symptoms of eye strain include sore eyeballs, headaches, back and neck aches, drooping eyelids and blurred vision. Because you often don't blink enough when focusing on a single object, you may also experience uncomfortable dryness in your eyes. None of this damages your eyes, and all of it eventually goes away after you stop straining them. Many eye doctors leave it at that, but some note that eye strain may contribute to nearsightedness. Most people who are nearsighted were born that way, but there is evidence that prolonged eye strain can make it worse.

If you are comfortable reading with a flashlight (or other low light) and don't experience any of the above symptoms of eye strain, it's probably fine for you to read this way. It's certainly easier on your eyes to read in good light, however. You can also avoid eye strain when you're reading by blinking frequently and taking a moment to focus on something out the window or across the room every 15 to 30 minutes.

Glasses and Eyewear
Clocks and Watches

How can you trace Cartier serial numbers?

I want to buy a Cartier watch yes its online, I want to find out how can I find if its a fake? This person has givin me the serial NUMBERS so this makes me feel a little better BUT,you can never be to safe.. So I just wanted to know if it a fake before I put out the cash! I'm not even sure if I will get my answer from here, but it don't hurt to try :-) Thanks -N.T.S


I specialize in buying and selling Cartier watches. I've seen fakes with all the correct marks and a serial number, but that doesn't mean they are legitimate. If the watch was registered by Cartier when it was sold or if it has been sent in to Cartier for service Cartier will be able to verify it is authentic, but be aware that if the watch was not originally sold in North America or was not registered when sold (fairly common) it can still be authentic. Some sellers offer the Cartier quartz model for sale and only state that the watch has a quartz movement, but fail to mention if it has a Cartier quartz movement. If it has a replacement movement in it the watch is technically authentic, but not original and is not worth as much as one with an original or a genuine Cartier replacement movement. The biggest mistake I've seen amateur Cartier buyers make is using the Cartier micro-script signature on the Roman numeral to verify authenticity. Indeed this is a good indicator, but not the best indicator as there were many Cartier watches produced prior to the technology required to make the micro-script possible and not all Cartier watches have Roman numerals for the dial to have the micro-script signature. Furthermore, the micro-script is not always located at the same place and if the dial has been refinished it may not appear at all. Another common problem is actually caused by language differences, i.e. "all original versus "authentic". A watch can be authentic without being all original. Unless someone has owned the watch since it was new and it has never left their sight it is impossible for them to state the watch is "all original" as a part could have been replaced at some point in time -- even without their knowledge. Your best bet is to buy from a reputable seller even if you have to pay slightly more money. -- Cartier_Specialist

Glasses and Eyewear
Glue and Adhesives

How do you remove lenses from eye glasses?

Press your thumb on the lense and pop it out. I've done it before.

I like to soak the glasses in hot water for a few seconds to soften the plastic, it will come out more easily. kw

Glasses and Eyewear

How many times do the aveage person blink in one minute?

25 times

Domande in Italiano
Glasses and Eyewear
Contact Lenses

What color contact lens fit dark complexion people?

Dark complexion look nice with green/light brown/grey colors lens.

Glasses and Eyewear

Who invented eyeglasses?

Italian Salvino D'Armate of Florence is credited with inventing the first pair of wearable eyeglasses in 1284. It is said a memorial once stood, honoring him, but it no longer exists. However, Egyptian hieroglyphs dating to the first century AD show people using glass sheets as a manner of vision correction.

As early as 700 BC, the Assyrians used polished crystal to magnify objects. Ancient Egypt and Babylon used similar objects and the ancient Romans and Greeks filled glass spheres with water for the same purpose.

Seneca, the Roman philosopher, wrote about filling transparent vessels with water in order to magnify objects seen through them. Emperor Nero, who reigned during Seneca's lifetime, is said to have used the first monocle, an emerald held in front of one eye as a lens to better see at distances.

Sometime between the 11th and 13th centuries, monks used reading stones to help them see the manuscripts they were illuminating. These reading stones were made by cutting glass spheres in half and holding them over the text or artwork needing magnification.

Roger Bacon, the forerunner of modern science, wrote of the magnification properties of lenses in 1262. His observations, based on experiments, were used by later scientists in the burgeoning studies of the natural sciences.

In conjunction with the Age of Enlightenment, during which new ideas about scientific subjects like earth sciences and astronomy were developed, optics became an important topic.

Others, like Alessandro di Spina, were also given credit for the first eyeglasses, and though doubt exists as to the actual inventor, all prototypes were probably invented in Italy late in the thirteenth century. The use of eyeglasses was depicted in several artworks created in the fourteenth and fifteenth centuries, giving credence to the existence of spectacles during this period.

Hyperopia, or farsightedness, and presbyopia, the vision problem that develops with age, were the first eye conditions for which glasses were invented. These armless convex-lensed glasses, called pince-nez, were pinched together to sit on the bridge of the nose. Over the years, various contraptions were used to hold the lenses, from a ribbon attached to the lenses and wrapped around the wearer's head to lorgnettes that held the lenses atop a long handle. Others with attached handles that operated like scissors were called scissors-glasses.

Edward Scarlett of Great Britain invented the first earpieces similar to what are used today.

Lenses for nearsightedness, or myopia, weren't discovered until later, when Nicholas of Cusa is credited with using concave lenses for this condition. In his 1604 paper on optics and astronomy.

German astronomer Johannes Kepler offered a scientifically correct explanation of the effectiveness of concave and convex lenses to correct vision deficits. His treatise formed the basis of today's optical science.

In 1784, almost two centuries after Kepler's writing, Benjamin Franklin invented the first pair of bifocals. Reportedly suffering from both myopia and presbyopia, Franklin was attempting to avoid the aggravation of switching between pairs of glasses to read or to see distant objects. His invention had a frame that held two lens sections together. The idea of cementing these two lenses together was not conceived for another one hundred years.

Since then, the technology for eyeglass lenses and frames has improved, contact lenses have been developed, and lasers are used to correct some vision problems. What was a tremendous mystery centuries ago is now an ordinary part of most people's lives. the the ps3

Some say it was Benjamin Franklin who invented bifocals.
Salvino D'Armate, an Italian, created the first wearable eye glasses in 1824. Benjamin Franklin, and American scientist, invented bifocals in 1784 to avoid having to regularly switch between two pairs of glasses.
no one knows who invented the spactales...they date back as a simple mag. glass in 4 BC
Salvino D'Armate invented the first wearable eyeglasses; however, Egyptian heirogliphics depict people holding sheets of glass to correct vision. Ben Franklin only cut his two pair of eyeglasses in half and put them together to be credited with the first bi-focal.
Salvino D'Armate is credited with making the first workable pair of glasses in 1284. Benjamin Franklin devised a way to make a pair of glasses with bifocal lenses in the mid 1700s.

Gold and Precious Metals
Glasses and Eyewear

How can you tell if platinum is real?

Platinum is rarer, heavier, more durable and even more expensive than gold. It is also very dense, meaning that it is heavy. It does require less upkeep than other metals because it is naturally white. Unlike white gold, which needs to be replated with rhodium (a liquid metal that is part of the Platinum Group Metals), platinum stays white forever. The appeal of platinum is in its appearance. Its white luster is unique. It is about 60% as heavier than 14-karat gold. The metal appears silvery-white when pure, and firm. Contrary to popular misconceptions, platinum does scratch. It is actually "softer," if you would, than gold. However, when platinum scratches, it does not lose metal. The metal simply "moves over" and becomes displaced. With a little buffing, the metal will move right back into place and return back to its original brilliance. When gold scratches, you actually lose metal. If you suspect a fake, bounce the jewelry in your hand and judge how heavy it feels in comparison to a gold jewelry. If it feels a lot heavier, it probably is platinum.

Home Improvement
Glasses and Eyewear
Glue and Adhesives

Can you glue the joints of your glasses?

It is never recommended to apply glue to spectacle frames or lenses. Super glue or epoxy may hold for a few days, but will quickly fail and render your glasses irreparable nearly every time.

The best course of action is to contact an experienced optician or eyeglass repair shop for repairs. In an emergency, tape is always a better solution than glue.

Online Shopping
Glasses and Eyewear

What are polarized sunglasses?

AnswerPolarized sunglasses help reduce the glare from reflected surfaces such as water or metal. They are suitable for driving and outdoor activities such as fishing for example. With reduced glare, they can therefore see the water more clearly. Invented in 1937 by Edwin Land who founded Polaroid.

Polarized Lenses - Protective Eye-wear that reduces glare "Cut the glare. Increase vision. And look cool while you're at it", seems to be the mantra of these highly advantageous eye accessories.

Polarized sunglasses lenses are made to neutralize the effect of glare. A 'glare' is caused when the sun's shining rays reflect off a solid surface or water. A 'glare' is typically horizontally polarized. And the lenses are made of vertical polarizes so Voila! They effectively neutralize the villainous glare! Advantages of Polarized Sunglasses: Polarized sunglasses are specially made for reducing the harmful effects of glare and eye-damaging light. And they are a perfect boon, for all your outdoor activities.

Polarized eye wear For outdoor activities that involves blinding sunlight" Polarized eye wear For outdoor activities that involves blinding sunlight Sports, Golf, Skiing, Fishing, Riding, Mountain Climbing and more.. Polarized lenses are perfect for a whole variety of activities. On the golfing greens, when you're riding, or jogging, or hiking in the wild, or doing anything that involves your being in blinding sunlight. This health eye wear also recommended after eye operation. Not only will you get complete protection from the ubiquitous UV rays and harmful glares, you'll also look totally chilled-out and cool! with our replica sunglasses. So do your eyes a favor and get yourself a pair of these small wonders.

These are best sunglasses in snow that cuts reflective glare.

Glasses and Eyewear
Contact Lenses

How do eyeglasses improve vision?

A person who needs glasses is either near sighted (meaning their eyes can't see things further away) or far sighted (meaning their eyes can't see things close by), so when light enters their eye, it either reflects the light in the front the cornea if the eyeball is too short or behind the cornea if the eyeball is too long. Either way the light doesn't reflect in cornea properly, and the image is blurred. Glasses are designed specifically to change the angle that light comes in so that it is reflected correctly, and are either convex or concave (shaped inwards or outwards).

Glasses and Eyewear
Contact Lenses

Are contact lenses prescriptions different from glasses prescriptions?

AnswerA quarter number less due to distance from the eye-lens. AnswerWell it depends on your power but till -5.00 dia power remains same.
Glasses and Eyewear

Where can you get upside down goggles?

More information on this site:

this device is invertoscope = upside down goggles and invertig spectacles


Copyright © 2020 Multiply Media, LLC. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply.