Types of Contact Lenses

Artificial intelligence (AI) is already changing eye care. Learn about the many ways researchers and doctors are using it to protect your vision.

A contrast sensitivity test can detect vision problems that conventional eye charts may miss. Learn how it works and when an optometrist may recommend it.

A routine eye exam screens the general health and quality of your vision, whereas a contact lens exam measures the size and shape of your eyes, among other tests.

 Learn how some studies have found that certain changes in vision and the eyes may help detect early signs of Alzheimer's and related dementias.

Ultra-widefield retinal imaging provides a detailed retinal assessment without dilation. But it has some limitations.

The Snellen eye chart is used by eye doctors to measure visual acuity. The more rows a person can read on the chart, the better their visual acuity.

September is Healthy Aging Month! Learn about the eye exam tests used to preserve aging vision.

Ophthalmoscopy is a detailed examination of your retina and other structures in the back of your eye. It’s also called fundoscopy or a fundoscopic exam.

Pupillary distance (PD) is a measurement that ensures your glasses provide the best vision correction. Learn the types of PD, how to measure it and more.

Visual acuity is the ability to see distinct figures and fine detail clearly. Visual acuity tests measure how well a person sees from a specific distance.

Learn how wavefront technology improves eye exams and vision correction. Discover its role in LASIK, custom lenses and advanced diagnostic precision.

The dilated portion of the eye exam lets your eye doctor get a better look at the retinas and optic nerves using magnifying lenses and special light sources.

Check out these frequently asked questions about eye dilation, and find out what this important eye exam can reveal about your eye and overall health.

Get details on what a contact lens fitting is and why it's important for clear vision.

The dreaded air puff test: it won’t hurt, but you still don’t like it. Learn what it measures and why it’s important if you have a family history of glaucoma.

Refractive errors cause blurry vision by affecting how your eyes focus light. Learn about the four main types and how eye doctors can correct them.

Iridology is a holistic practice that claims health problems can be detected by looking at the external structures of the eyes.

What is a digital eye exam? It’s similar to a traditional exam, but many manual measurements and adjustments are now computed automatically.

In 2026, sunglass trends for women range from reinvented cat-eyes to music-enhanced frames. Some may also embrace the fad of pink-tinted sunglass frames.

Daily vs monthly contacts? Our guide looks at the differences in contacts when it comes to how long they last, safe for overnight use, cost and care.

Fit-over sunglasses are worn over prescription glasses, block more sunlight than traditional sunglasses and offer an affordable alternative to prescription sunglasses.

It can be hard to see clearly while you’re driving at night. Find out if night driving glasses with yellow lenses can really help you see better.

Round sunglasses have always been a staple in stylish eyewear, but this year’s trends bring new styles and sizes that are glamorous, classic and chic.

What are GP or rigid gas permeable contact lenses, and when are they a better choice than soft contacts?

Silicone hydrogel contact lenses are advanced contacts that may be healthier than regular soft lenses. Are they right for you?

Sport contact lenses can give you a competitive advantage; learn which designs are right for your sport.

The best blue light filtering glasses can protect you against eye strain and damage, as well as sleep problems caused by blue light from screens.

A prescription is not necessary for reading glasses and buying over the counter glasses, which in most cases, a great option.

Learn about custom contact lenses and how they may help you see better than regular soft or gas permeable contacts.

Pinhole glasses, known as stenopeic glasses, are plastic with hundreds of pinhole-sized holes. They help improve refractive errors by shielding indirect rays of light.

Computer glasses with anti-glare treatment and blue light filtering can help reduce symptoms of digital eye strain, such as headaches, blurred vision and eye fatigue.

Get details on the benefits of environmentally responsible contact lenses.

While new technology is being developed for glaucoma glasses, there are many features of eyeglasses (including lens tints and UV protection) that glaucoma patients can currently benefit from.

30-day contact lenses and LASIK both provide continuous vision. Find out if one is right for you.

Discover the ideal sunglasses for water sports. Stay protected and stylish with top picks for kayaking, windsurfing and more.

How much blue light do your glasses filter? Finding out may be more difficult than you think.

Get the history behind the classic aviator style, why they’re a celebrity favorite and how to choose a pair that works for you.

Is there an easy way to select the correct reading glasses power? [Explanation includes reading glasses power chart by age.]

Top quality prescription sunglasses may be cheaper than you think; this guide tells you what features to look for and how to find great buys.

Do you need computer glasses? Learn how glasses for computer use increase visual comfort when using your digital devices.

Find out if monovision glasses could be an alternative to bifocals or expensive progressive lenses.

Some of the best cosplays call for contact lenses to stay true to character. But are they safe, and where can you find contacts for cosplayers?

Get safety tips for wearing spooky contacts and take your Halloween costume to the next level.

PMMA (better known as Plexiglass or acrylic) was once considered the best material for contact lenses. Here’s why that’s no longer true.

Colored contact lenses enhance or completely change your eye color. Info about types of colored contacts and cost.

The vampire contacts used in Twilight, New Moon, etc., are special-effect contact lenses; you can buy replicas for Halloween or theater use.

Learn the pros and cons of over-the-counter reading glasses vs. prescription multifocal eyeglasses (progressives, bifocals or trifocals) here.

Learn about extended wear contact lenses that you may be able to wear day and night for several days.

Rx sunglasses are simply sunglasses that have a lens prescription. Rx sunglasses can be affordable and protect eyes from harmful UV rays.

Reading glasses help with up-close vision and have various styles and prices. Includes an easy way to check which store readers help you to see clearly.

Explore how smart contact lenses can monitor eye health and enhance vision, and learn what future smart lenses may offer consumers and patients.

Consider clip-on sunglasses if you want to wear your glasses and shield from the sun. We’ll explore the best brands, available UV protection and best fit.

Learn all about the different types of contacts, from standard lenses to purely cosmetic, plus custom contacts for unique or complex eye and vision issues.

Learn how motion sickness glasses may relieve symptoms by matching the motion signals from your eyes with other motion signals, like those from the inner ear.

Contact prescription vs. eyeglass prescription: they're not the same. Learn the differences — and why you need both.

A diabetic eye exam is a detailed evaluation of the health of your retina and other parts of the eye that can be affected by diabetes. Learn more.

Guide to daily disposable contact lenses, frequent replacement contacts, wearing and replacement schedules, planned replacement, more.

Discover the 5 ways that children’s eye exams differ from adult eye exams and what various optical tools and tests are used for both.