1. Lens Thickness
The prescription is always the primary consideration in choosing glasses. Before you start looking for the frames, consult with the optician. If the prescription calls for strong lenses that are likely to be thick, it is important to keep the frames as small as possible to reduce the final lens thickness. Also, the larger the lens is, the more likely you are to see distortion and blur toward the edges. So smaller lenses cut away peripheral blur.
2. Fashion Forward
Whether they are full- or part-time eyeglass wearers, most kids get at least a little teasing about their specs, especially the first time they wear them. Children can feel more comfortable about wearing glasses when they are allowed to choose their own frames. Your child will want to avoid any frames deemed "uncool," but you as a parent still may need to offer subtle guidance if you think certain frames clearly are objectionable, too expensive or inappropriate.
Just keep in mind that the real object is to get your child to wear the glasses. Extra enticement may be found in ultra cool features like photochromic lenses with tints that darken outdoors, which may help inspire any child to want to wear glasses.
3. Plastic Vs. Metal
Children's frames are made of either plastic or metal (also called "wire"). Double bridges are found on boys' frames, while frames with single bridges are either unisex or strictly for girls. Many manufacturers copy adult styles for children's frames. Kids may be attracted to these styles because they are more grown-up. It's not unusual for kids to ask for glasses that look just like Mom's or Dad's.
In the past, plastic eyeglasses were a better choice for children because they were considered more durable, less likely to be bent or broken, lighter in weight and less expensive. But now manufacturers are making metal frames that incorporate these features as well. Metal composition varies, so ask the optician which one is best for your child, based on experience with different alloys. Ask for hypoallergenic materials if your child has shown sensitivity to certain substances. For example, some people are allergic to frame alloys that contain nickel.
4. Proper Bridge Fit
One of the toughest parts about choosing suitable frames for kids is that their noses are not fully developed, so they don't have a bridge to prevent plastic frames from sliding down. Metal frames, however, are usually made with adjustable nose pads, so they fit everyone's bridge.
Most manufacturers recognize this difficulty with plastic frames and make their bridges to fit small noses.
Each frame must be evaluated individually to make sure it fits the bridge. If any gaps exist between the bridge of the frame and the bridge of the nose, the weight of the lenses will cause the glasses to slide, no matter how well the frame seems to fit before the lenses are made.
It is important that the glasses stay in place, because kids tend to look right over the tops of the lenses instead of pushing slipping glasses back up where they belong. Your optician is usually the best judge of whether a frame fits properly.
5. The Right Temple Style
Temples that wrap all the way around the back of the ear help keep glasses from sliding down or dropping off a child's face completely.
These wraparound temples, called "cable temples," generally are available on metal frames and are especially helpful to keep glasses in place on toddlers.
Another option is a strap that goes around the head.
Cable temples and straps are not a good choice for part-time eyeglass wearers, however, because they are a bit more awkward to put on and take off. For glasses that go on and off frequently, it is better to have regular, or "skull," temples that go straight back and then curve gently around the back of the ear.
6. Spring Hinges
A nice feature to look for is temples with spring hinges. These special hinges allow the temples to flex outward, away from the frames, without causing any damage. Although they sometimes cost a bit more, spring hinges can be a worthwhile investment on children's eyewear.
Kids are not always careful when they put on and take off glasses, and the spring hinges can help prevent the need for frequent adjustments and costly repairs. They also come in handy if the child falls asleep with the glasses on or just has a rough day at play. Spring hinges are strongly recommended for toddlers, who sometimes get carried away playing with their new glasses.
7. Lens Material
Once you and your child agree on frames that you both like, the next consideration is the lenses.
Children's lenses should be made of polycarbonate or a new material called Trivex, because they are the most impact-resistant material around. (Bulletproof glass also is made of polycarbonate.)
In addition to being the safest materials, they also are lighter in weight than regular plastic lenses, a nice advantage for strong prescriptions.
Polycarbonate and Trivex have built-in protection against potentially damaging ult
raviolet (UV) rays, and the lenses are scratch-resistant coated by the manufacturer or fabrication lab.
The price for polycarbonate lenses generally is comparable to the cost for regular plastic lenses with UV and scratch-resistant coatings. And with polycarbonate, kids get that extra margin of safety to protect their eyes. Keep in mind that Trivex lenses may cost a little more than polycarbonate.
The least desirable material for your child's lenses is glass. Although it must be treated for impact resistance, glass still shatters when it breaks, and broken glass — even safety glass — is a hazard to the eye. Glass lenses are also a little heavier, which makes them less comfortable to wear.
Most optical stores in the United States will not sell children's glasses with glass lenses in them.
8. Sports Eyewear
Polycarbonate is such a safe lens material that you may be tempted to let your child play sports in his regular glasses.
Here's the drawback: although polycarbonate is the lens material used for sports eyewear, regular eyeglass frames do not provide enough protection from large objects such as balls and flying elbows. So if your kid is involved in sports, a proper sports goggle with polycarbonate lenses will provide the most protection against eye injury.
Sports goggles must be fitted properly in order to provide the most protection, so consult with an eye care professional before making a purchase. Although it sounds counter-intuitive, a sports goggle should have a larger vertical eye opening, rather than a smaller one. If an impact should occur and the goggles are pushed toward the face, a large eye opening keeps the impact points far above and far below the eyes. With a small opening, however, the goggle hits right at the edge of the eye socket, which can damage the globe of the eye.
9. Warranties
Many optical retailers offer a warranty plan that will replace eyewear at no charge or for a small fee in case of damage to the frames or lenses. Consider opting for the warranty, especially if your child is a toddler or a first-time wearer.
Be aware, however, that not all warranty plans are the same. It is to your advantage to investigate thoroughly replacement costs with and without the warranty plan. Generally, if the warranty costs you less or about the same amount as the fee to replace one single lens, it is worth the price.
It is easier to scratch a lens than to do almost any other kind of damage to the glasses. If a lens is scratched, you must replace it, because it can compromise your child's vision development.
10. Backup Pair
If your child's poor vision causes difficulty functioning without glasses, you may w
ant to purchase a backup pair of glasses, in case something happens to the primary pair and they are out of commission for a week or so while being repaired.
A sports goggle can double nicely as a spare pair of glasses. In addition, prescription sunglasses make a good backup pair.
If your child wears glasses, prescription sunglasses are needed as well. You may choose simply to use an old pair of glasses for the
sunglasses if the prescription is essentially the same, and have the doctor's office add UV protection and tint them dark. Sometimes, in an emergency, most of the dye can be removed so that the glasses can be used indoors again.