Eye Health: Glasses and Contacts

Has your primary care provider said you need glasses, but you’re afraid they won’t look good? Do you think contacts might hurt your eyes or be hard to take care of?

It’s normal to have lots of questions and feel nervous about getting glasses or contacts. However, it’s important to wear them if your vision needs correcting. Not wearing corrective lenses can cause headaches and other problems.

How do I know if I need glasses?

If you’re having trouble reading or seeing the blackboard, it’s possible that you need glasses or contacts. If you already have glasses or contacts, your vision may have changed and you need a new prescription. Learning disabilities can also cause reading problems by making it difficult to write, read, or do math. It’s important to see a doctor to understand why you’re having trouble reading.

Why do I need glasses or contacts?

Many teens have trouble seeing objects up close or far away. This is called a refractive error and is the most common type of eye problem. Refractive errors are caused by the eyes’ shape being abnormal. This means that the eye doesn’t bend light in the right way to create a clear picture.

Wearing glasses or contacts is one way to correct your vision and help your eyes see clearly.

You may have a refractive error if:

  • Your vision is blurry or hazy
  • You have headaches
  • Your eyes hurt
  • You see a glare around bright lights
  • You have to squint to see well
  • You see double
  • You have trouble driving at night

How do glasses and contacts work?

To understand how corrective lenses work; let’s first review how your eyes see. Your eyes have lenses that focus light on the retina, or back of the eye. The retina changes the light into electrical signals that are sent to the brain. The brain uses these signals to create an image of what you see.

The cornea and lens bend the incoming light so that the image is focused on the retina, which is located at the back of the eye. (See image above)

Many people’s eyes are abnormally shaped. This means that the lens can’t focus light on the retina. Depending on the type of vision problem you have, the light can fall in front of or behind the retina. This creates a blurry image.

Glasses and contacts change the direction of light so that it hits the retina and creates a clear picture.


Glasses have been around since the ancient Egyptians and they work even better today. Glasses are easy to wear and take care of.

Choosing Frames

Frames are the part of the glasses that hold the lenses. They come in lots of different shapes, sizes, materials, and colors. You’ll be able to decide what shape/style looks best and is most comfortable on your face. However, some frames will fit better than others.

Here’s what you should look for:

Other things to think about:

  • Some frames last longer than others.
  • Spring-loaded frames are less likely to bend or warp.
  • Nose pads prevent the frames from slipping on your nose and provide added comfort.

The Right Lenses for Your Lifestyle

Eyeglass lenses come in different prescriptions, depending on what type of vision problem you have. Lenses correct your vision by refocusing light onto the retina, or back of the eye. After your doctor gives you a prescription for lenses, you still have some choices to make about the type of lenses you’d like.

Lenses are made from different materials. Choosing the right lenses depends on what activities you do and how you’re going to use your glasses. Only you can decide what lenses are right for your lifestyle. But your lenses do need a couple of things to last a long time and give you the right amount of protection.

Make sure your lenses:

  • Are shatter resistant (made of polycarbonate) – Shatter resistant lenses are designed to protect your eyes from injury and not break if you drop them.
  • Have U.V. (ultraviolet) protection – This protects your eyes from the sun’s harmful rays.

You may want your lenses to have other features. Talk to your eye specialist and parent(s) or guardian(s) about what lenses are best for you. Keep in mind that these features usually cost more money.

  • Anti-Reflective Coating cuts down on glare from bright lights. May make it easier to see when you’re driving at night.
  • Scratch Coating reduces number of scratches on your lenses.
  • Tinting – Color added to lens for style or to block out the sun. Lenses can also get darker in outdoor light to act as sunglasses.
  • Thin lenses are lightweight and very thin. They may feel lighter on your face.

Taking Care of Your Glasses

Even shatter resistant glasses can break, if you’re not careful.

Here are a few tips for taking care of your glasses:

When should I wear my glasses?

  • Wear your glasses as often as you need them to see. This may be all the time or only sometimes. Bring your glasses with you at all times, so you can be sure to have them if you need them.
  • Bring your glasses to your driving test and wear them if you need them. If your driver’s license says you wear corrective lenses, wear your glasses every time you drive.
  • Wear sports goggles during sports or other physical activities when you need your glasses. Do NOT wear your normal glasses during sports. Glasses can break and seriously injure your eyes. Sports goggles are designed to protect your eyes and can be made with the same prescription as your eyeglasses, but they’re shatterproof and safe.


Contact lenses work in much the same way as glasses. They correct your vision by focusing light on the back of the eye, or retina. The difference is that contacts sit on your eyeball, instead of in front of your eyes. For this reason, they can be dangerous if not used properly.

What are contacts?

Contacts are small, plastic discs that sit on your cornea–the clear surface of the eye. According to the Center for Disease Control (CDC), more than 30 million people in the U.S. wear contacts. Similar to glasses, contacts can correct nearsightedness, farsightedness, and astigmatism.

There are different types of contacts, but most people wear soft lenses. These lenses are thin and usually feel comfortable on your eye. Soft contacts can be worn once and thrown out or reused for weeks or months, depending on the type of contact lenses you buy.

  • Single use lenses are worn for only one day and then thrown out.
  • Daily wear lenses are worn during the day and taken out at night. You throw them out after many weeks. They are less expensive but need to be cleaned frequently.
  • Extended wear lenses are worn day and night for a certain number of weeks. They have a higher risk of infection and other eye problems.

Are contacts right for me?

Contacts are not right for everyone. People with certain eye conditions or who are prone to infections should wear glasses instead of contacts. If your doctor doesn’t think contacts are right for you, he or she will give you a prescription for glasses.

Contacts are harder to take care of than glasses. They also take more time to clean and to put in your eyes. If you’re going to wear contacts, you have to be willing to put in the extra time and energy to keep your eyes healthy.

Some people have trouble touching their eyes. If you don’t like touching your eyes, it may be hard for you to put your contacts in and take them out. You may have to practice doing this before you feel comfortable wearing contacts or you may find that glasses are a better choice for you.

Reasons contacts may not be right for you:

  • Allergies
  • Eye infections
  • Dry eyes
  • Don’t have the time to take care of lenses
  • Trouble touching your eyes

What happens when I get contacts?

Your eye specialist may prescribe contacts for you during your eye exam or you may have to come back for another visit to get your prescription.

Finding the right contacts for your eyes is called a contact lens fitting. This may take 2-3 hours in order to find a contact lens that fits your eye and feels comfortable.

Your eye specialist will show you how to put your contacts in and take them out, and how to take care of them. You will practice with the eye specialist until you feel comfortable doing it on your own.

The eye specialist may have your contacts in the office or they may have to be ordered. A follow-up appointment is usually scheduled for a week after you start wearing contacts, so the eye specialist can check how your eyes are doing.

How do contacts feel?

Wearing contacts may feel strange at first. You may feel like there is something moving on the surface of your eye. It takes 10-15 minutes for contacts to settle into place when you first put them in your eyes. Once they stop moving, you will probably feel nothing.

If you wear your contacts for too long or your eyes are dry, the contacts may feel uncomfortable.

If this happens:

  • Use wetting drops to moisten the surface of the contact lenses. Don’t use other kinds of eye drops as they can damage your contacts.
  • Take the contacts out of your eyes and give your eyes a break.

Some lenses are larger, such as the ones that correct for astigmatism. It may take longer to get used to these lenses.

How do I put contacts in my eyes?

Put in your contacts in the morning, after you shower or take a bath or wash your face.

How do I take contacts out of my eyes?

Take out your contacts at night before going to bed. Do this before you wash your face or take a shower. Don’t leave your contact in overnight or if you take a nap. This may cause eye infections.

Be very careful when removing your contacts. Pressing too hard or scratching the eyes with your nails may cause serious injury.

How long can I wear my contacts?

How can I keep my eyes healthy when I wear contacts?

Keeping your eyes healthy while you wear contacts takes time and energy. However, proper contact care prevents eye infections and other problems.

Contact Lens Solution

Wetting Drops

Replacing Lenses

Lens Case

When should I see a health care provider?

It’s important to see your PCP right away if you have any problems with your contacts.

See your PCP right away if you have:

  • Blurry vision
  • Pain
  • Swelling
  • Redness
  • Excessive tearing
  • Sensitivity to light

“Circle Lenses” Are Never Cool

Decorative lenses, also called “circle lenses” or “big eye lenses,” are worn for fashion or as part of a costume. Decorative lenses are not prescription lenses. They don’t correct vision problems and aren’t prescribed by an eye specialist.

Decorative lenses change the color or shape of your eyes. They are usually much larger than prescription contact lenses. They also have not been tested for safety. They are sold in costume shops or over the Internet. The manufacturer may say that the lenses are “one size fits all” or that you don’t need to see an eye specialist to wear these lenses.

The truth is that decorative lenses are potentially very dangerous. Because they are larger than contact lenses, they prevent oxygen from reaching the eyes. They are not disinfected and can cause serious infection or even blindness.

There’s no safe way to wear decorative lenses. Don’t wear them at all and let your friends know about their dangers too.

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