Different Types of Lenses

When you first go to purchase glasses, chances are you don’t really think about the multiple varieties of lenses that are out there nor their technical terms. There are many technical terms for glasses that correct different eye conditions, as well as the ones used for different situations.

Single Vision Lenses:

These are the most common lenses used. They are used to correct nearsightedness, farsightedness and astigmatism.

Bifocal and Trifocal:

These lenses have multiple focal points for close-up and far away vision. Lenses like these usually have a line splitting the focal points.

Progressive Lenses:

Just like the bifocal and trifocal lenses, progressive lenses have multiple focal points (intermediate, close and far away points). Unlike bifocals, however, these do not have outlines that determine the focal points, which makes the transition more natural.

Anti-Reflective (AR):

These lenses are designed to cancel out the reflection off the lens surface. This helps to eliminate eye strain when looking at screens and help with night vision.

Scratch Resistant:

These lenses are exactly that, scratch resistant. This helps decrease the amounts of scratches that may affect the eyes.

Aspheric:

These lenses can be made thinner and flatter than regular lenses in order to use a larger portion of the surface because they have various curvatures.

High-Index Plastic:

These types of lenses are usually made for those who need strong prescription. However, these are lighter and thinner than the old school lenses, which were very thick.

Trivex:

These are special lenses for those who work in industries that require eye protection. They are lightweight, thin and impact-resistant.

Polycarbonate:

For those who play sports, these are the lenses you should be using. Just like the trivex lenses, these are also impact-resistant and can also be used to protect eyes in tough work.

Photochromic:

These lenses are known as the transition lenses that transition from clear to dark. They can be made as either glass or plastic. They help reduce eyestrains while transitioning from indoor lighting to outside light.

Need help deciding which lenses would be best for you? Contact Independent Eye Care for help on choosing new glasses.

 

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