How to Choose Lens Index?

Pupillary Distance (PD) is the distance, in millimeters, between the center of one pupil to the center of the other. The PD is needed to manufacture your eyeglasses because it determines the exact optical center of the lens, which is the point where you look through the lens.

What are high index lenses and what's the difference?

High index lenses are thinner, more powerful lenses. They're lightweight and stylish, but are mostly reserved for those with higher vision correction needs. While most prescriptions are compatible with more than one specific index, it's up to you to decide which one fits your personal needs!

The difference between your glasses' lens index can make a huge impact which is why learning about high index lenses’ meaning is important. Deciding which you should get depends on your prescription and your lifestyle. Thicker lenses are more affordable, but can only accommodate lower vision correction needs. Thinner lenses are lightweight (and more stylish!) and can accommodate MANY kinds of vision needs, including higher prescriptions. In terms of balancing price and quality, 1.59 index polycarbonate lenses accommodate most prescriptions and are extra durable.

How lens coatings affect my vision?

Lens coatings will affect your vision, but the effects are generally positive.
For example, an anti-reflective coating enhances visual clarity while cutting down on eye strain.
Blue light blocking coatings, commonly used for computer glasses, reduces harmful blue light that’s emitted from computer monitors, smartphones, laptops, TVs, and other modern displays. This makes it more comfortable to look at the bright screens of electronic devices.
Blue light blocking glasses are quite popular as a result and will have a positive effect on your vision.

How lens coatings affect my vision?