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Lenses Introduction

Lens Usage
1. Single-Vision Lenses
Single Vision lenses are the standard eyeglass prescription. These glasses have only one viewing area throughout the entire lens and the correctional area can be for distance, reading or intermediate.

Distance - If you wear glasses all day, but don't have bi/varifocals or mostly need these glasses to see things in the distance.

Reading - If you need to read things close to you.

Intermediate - If you mostly need these glasses for working on the computer or something else at arms length.
2. Bifocal Lenses With A Line
A bifocal lens means a lens with two credits of focus. A small portion of the eyeglasses lens is reserved for the near-vision correction. The rest of the lens is usually a distance correction.
3. Progressive Lenses - No Line
Progressive lenses are the closest to how natural vision is that you can get in a pair of prescription eyeglasses.

They are more than just a defined near and distance correction in one lens. Rather, progressives provide a smooth transition from distance through intermediate to near, with all the in-between corrections included as well.

This constant graduation of the prescription means that you can look up to see in the distance, look ahead to view your computer in the intermediate zone, and drop your gaze downward to read and do fine work comfortably close up.
4. Prism Lens
Prism glasses feature lenses designed to correct double vision caused by underlying medical issues. If you need them, your prescription will feature numbers telling us how to shape your lenses to correct your vision.
Lens Type
Eyeglasses
Sunglasses
Digital screen protection
Lenses are ideal for all spectacle wearers, especially office workers and individuals who spend prolonged hours using digital devices. With or without a prescription, protect your eyes with a pair of blue-blocking glasses. Help shield your eyes from harmful blue light and reduce eyestrain.

(1) Blue Block Lenses help reduce exposure to Harmful Blue Light emitted from digital devices.
Learn more about blue block lenses.

(2) With our blue light blocking glasses, you can enjoy your screen time and preserve your eyesight.
Learn more about Blue Block Pro.
Photochromic
Lenses that automatically darken from the UV rays of the sun when you go outside! Same quality as your doctor's office.
Learn more.
Transitions ®
Transitions ® VII Lenses are brand photochromic lenses, which contain patented photochromic dyes. They are the smartest choice for your everyday lenses offering everything you need in a corrective lens:

• Visual acuity
• Visual comfort
• Convenient protection from the harmful effects of UV radiation and glare.

Learn more.
Eyeglasses
Blue block
Blue Block Lenses help reduce exposure to Harmful Blue Light emitted from digital devices. Learn more.
Blue block pro
Blue Light Blocking Pro, with anti-glare coating and super hydrophobic coating. It could prevent damage of harmful blue light and glare to increase eye comfort. Learn more.
Photochromic
Lenses that automatically darken from the UV rays of the sun when you go outside! Same quality as your doctor's office. Learn more.
Transitions
Transitions ® VII Lenses are brand photochromic lenses, which contain patented photochromic dyes. Learn more.
Sunglasses
Tint
If our selection of sunglasses isn't enough for you, our color-tint coatings let you create your own. We offer 6 colors for you to choose from. Learn more.
Mirrored Lens
Mirrored sunglasses are sunglasses with a reflective optical coating on the outside of the lenses to make them appear like small mirrors. Learn more.
Polarized
Polarized lenses are used in sunglasses to reduce glare from reflective surfaces such as the surface of a lake or the hood of a car. Learn more.
Lens Index
Index
What is index?
Lens index is a number that describes how thick or thin your
lenses are. The higher a lens' index is, the thinner it becomes.
Higher prescriptions require higher index lenses, while lower
prescriptions require lower index lenses.
Lens Index
Lens Thickness Comparison.
Prescription Strength
The higher a lens' index is, the thinner it becomes.
Lens thickness comparison
1.50
1.57
1.59
1.61
1.67
1.74
Prescription Strength
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The higher a lens' index is, the thinner it becomes.
Features
These lenses are available starting from $0.
Recommend Rx Range
SPH (0 to +/-2.0), CYL (0 to +/-1.5).
Features
Thinner and lighter than standard lenses.
Recommend Rx Range
SPH (0 to +/-2.0), CYL (0 to +/-1.5).
Features
These lenses are made of special Polycarbonate material.
Recommend Rx Range
SPH (+/-2.0 to +/-4.0), CYL (+/-1.5 to +/-2.0)
Features
Thin & Light lenses offer the best value for people who have moderate prescriptions and want a light lens.
Recommend Rx Range
SPH (+/-4.0 to +/-6.0), CYL (+/-2.25 to +/-3.0).
Features
These lenses are great for people with moderate-to-high prescriptions.
Recommend Rx Range
SPH (+/-6.0 to +/-9.0), CYL (+/-3.25 to +/-4.0).
Features
The thinnest and lightest lenses available on the optical market.
Recommend Rx Range
SPH (above +/-9.0), CYL (above +/-4.25).
Lens Coatings
Anti-Scratch Coating
It helps to prevent minor scratches that can easily happen to a regular lens. An anti-scratch coating acts as a protective layer thus making the lenses more durable.
Anti-Reflective Coating
Some of the light passes through the lens, this is called refraction, some is absorbed and converted into heat energy (very small amounts) and the rest bounces off. When light bounces off the lens this creates glare. Glare or reflections can be annoying and in some severe cases can decrease visual acuity. To improve both the vision through the lenses and the appearance of the glasses, an anti-reflective coating (also called AR coating) is applied.
UV Protective Coating
UV Coating is a beneficial lens treatment. It is an invisible dye that blocks ultraviolet (UV) light. Just as sunscreen keeps the sun's UV rays from harming your skin, UV-protective treatments for eyeglasses lenses block those same rays from damaging your eyes.
Super Hydrophobic Coating
Super Hydrophobic (water resistant) coating keeps water drop, dirt, and smudges off your lenses while making them easier to clean. Lenses with this premium coating stay sparkling twice as long.
UV Protective Coating
UV Coating is a beneficial lens treatment. It is an invisible dye that blocks ultraviolet (UV) light.
Super Hydrophobic Coating
Super Hydrophobic (water resistant) coating keeps water drop, dirt, and smudges off your lenses while making them easier to clean.
Anti-Scratch Coating
It helps to prevent minor scratches that can easily happen to a regular lens. An anti-scratch coating acts as a protective layer thus making the lenses more durable.
Anti-Reflective Coating
When light bounces off the lens this creates glare. To improve both the vision through the lenses and the appearance of the glasses, an anti-reflective coating is applied.
UV Protective Coating
UV Coating is a beneficial lens treatment. It is an invisible dye that blocks ultraviolet (UV) light.
Super Hydrophobic Coating
Super Hydrophobic (water resistant) coating keeps water drop, dirt, and smudges off your lenses while making them easier to clean.
Anti-Scratch Coating
It helps to prevent minor scratches that can easily happen to a regular lens. An anti-scratch coating acts as a protective layer thus making the lenses more durable.
Anti-Reflective Coating
When light bounces off the lens this creates glare. To improve both the vision through the lenses and the appearance of the glasses, an anti-reflective coating is applied.

Buy Custom Prescription Lenses for Glasses Online

Explore our diverse range of lenses including single vision, progressive, bifocal options and sunglasses lenses, all available in various materials and coatings to suit your lifestyle and preferences. Whether you're looking for lenses that reduce glare, resist scratches, or offer UV protection, GlassesShop.com has covered the best solutions on the market. Upgrade your eyewear today and experience the difference with our top-grade lenses tailored just for you.
 

How do you replace lenses in existing frames?

Replacing lenses in existing frames involves a few careful steps: removing the old lenses, cleaning the frame, getting the new lenses, inserting the new lenses and adjustment and fit. If you are the first time to replace lenses, our lenses replacement video guide could do you a favor.

If you're not comfortable doing this yourself, or the frames are expensive or delicate, it's a good idea to have the lenses replaced professionally. Opticians have the tools and expertise to replace lenses without damaging the frames or the lenses
 

What are the 3 types of eye lenses?

In the context of eyeglasses and corrective lenses, there are three primary types of lenses commonly used to correct or enhance vision:

1. Single Vision Lenses: These are the most straightforward type of lenses and are designed to correct a single field of vision. They include the the lenses to see far and near, reading glasses and can be used to correct nearsightedness (myopia), farsightedness (hyperopia), or astigmatism. Single vision lenses that include both eyeglasses and sunglasses have the same power across the entire lens and are suited for all age groups.

2. Bifocal Lenses: Bifocal lenses, also called flat top lenses, contain two different optical powers in one lens, typically divided by a visible line. The upper part is generally used for distance vision, while the lower part is used for near vision tasks like reading and screen work. Bifocals are particularly useful for individuals over the age of 40 who develop presbyopia, which affects the eye's ability to focus on close objects.

3. Progressive Lenses: Also known as multifocal lenses, progressive lenses offer a gradient of varying lens powers, providing a smooth transition from distance correction on the top to near correction on the bottom. There is no visible line on the lens, making them more aesthetically pleasing than bifocals. Progressives are ideal for providing clear vision at all distances, catering especially to those with presbyopia.

Each type of lens serves different purposes and caters to different visual correction needs, making it important to choose the right type based on individual eye conditions and lifestyle requirements.
 

Do glasses lenses fit all frames?

Actually, glasses lenses do not fit all frames universally. The fit of lenses in frames depends on several factors:

Size and Shape: Each frame has specific dimensions and a unique shape, requiring lenses to be precisely cut to fit. Lenses must match the frame's size and curvature to ensure a proper fit without stress or gaps that could cause the lenses to pop out or crack.

Type of Frame: Different types of frames may require different kinds of lens cuts. For example, full-rim frames can accommodate a wide range of lens thicknesses and sizes, whereas rimless frames need lenses to be drilled precisely to fit the mounting credits.

Material Compatibility: Some materials used for lenses and frames may not be compatible. For instance, heavier glass lenses may not be suitable for lightweight or flexible plastic frames.

Prescription StrengthHigh prescription lenses typically have more curvature and thickness, which may not fit well in all frame styles. For instance, very thin or delicate frames may not support thick lenses well but frames, such as oversized ones will suit better.

To ensure lenses fit correctly in frames, it is advisable to have them professionally fitted and tailored by an optician to clearly find the glasses frames you want. When ordering new lenses for existing frames, precise measurements and proper handling are crucial to match the lenses to the frames accurately.

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