yosemite eyewear

Eyeglassess lens guide

All you need to know about our lens options to help you to choose your new pair quick and easy.

PRESCRIPTION TYPES

Single-vision

These lenses designed to help people who require correction  in one filed of vision – distance, near, intermediate. Single vision lens distribute focus evenly over the entire surface of the lens.  This option is what most customers chooses.

difference between single vision and progressive lens, progressive lenses, prescription eyewear

Progressive

Progressives lens with three viewing areas – distance-intermediate-near vision. These lenses are great if you looking for both distance and reading correction as they  will have an ADD power.  Providing sharper vision and seamless transition from distance correction on top to reading correction on bottom.  This will eliminate multiple pairs of glasses. 

progressive and bifocals lenses

Bifocals

This lens have two viewing areas divided by a visible line – a larger viewing area for distance and a smaller area for reading. 

If its your first time wearing this lens, it will take some time to adjust to moving your eyes between the distance and reading portion of the lens.

Computer lens

This lens has half of your reading power and are tailored for viewing a computer screen anywhere 20-40 inches away.

 

Readers

These lenses can be either prescribed or over-the-counter. Keep in mind that all over-the-counter readers will have the same power in both eyes, where prescription readers will be designed specifically to your prescription needs.

 

Lens Types

Blue block filter

This lens provide protection against the harmful blue lights emitted from digital devices like laptops, computer screens, phones and sun. These lenses filter higher percentage of blue light than any other options.

Learn more.

Transitional or light-responsive

These lenses transition from fully clear to a darker tint when exposed to UV rays, preventing eye strain and reducing glare. They protect your eyes from 100% of UVA and UVB rays. 

You can chooses between different tint options like grey, brown or green

Lens Materials

Polycarbonate

These lightweight, impact-resistant lenses are thinner and lighter than plastic and are shatter-proof. Most popular lens options. 

1.67 high-index

Recommended for anyone with a strong prescription (+/-4 or higher total power). These lenses are up to 20% thinner than polycarbonate lenses. 

1.74 high-index

These lenses, recommended for those with especially strong prescriptions (+/- 8 or higher total power). They are 10% thinner than 1.67 lenses.  

Not sure if this is a right option for you? No problem. Just sent us a quick email and we will help you to select the right lens option for you. 

Lens coating types

Anti-Reflective coating

Anti-Reflective coating also called AR is a thin coating that eliminates reflections and glare from the front and back surfaces of your lenses. It improves light transition through lens for night driving and helps phototropic lenses reduce glare and bright light. This coating is highly recommended  for all lens types, but especially for polycarbonate and high index, which reflect more light than regular lenses. 

Scratch-Resistant Coating

Scratched lenses are distracting and can affect your ability to see clearly. Today, many eyeglass lenses have built-in scratch resistant coatings, including high-index lenses and lenses made of polycarbonate. These types of lenses are treated front and back with a clear, scratch-resistant coating and have a much harder surface. 

Anti-fog Coating

During cold months, nothing is more frustrating than having your glasses fog up when you come in from outside. Even if you don’t live in a cold climate, your lenses may fog up during sports activities or when you are hot and perspiring. 

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