Do you want to purchase eyewear, but are intimidated by all the optical industry jargon?

There are many vision and optician terms that are worth your while to know as they can help you with everything – from decoding your eyeglasses prescription to understanding lens coatings. Or, you can just show off your extensive glasses vocabulary! Whatever the reason, Winkk is here to help you choose the perfect pair of glasses.

Here is the ultimate optical glossary to get you started.

20/20 Vision: This is one of the most widely used optical terms but do you know what it really means? It is used to describe sharpness or clarity of vision at a 20-foot distance. So, if you have 20/20 vision, you can clearly see the sign that is 20 feet away.

Lens Materials: This refers to what your eyeglass lenses are made of and it’s very important to choose the right lens material to meet your needs. Lens materials include glass, plastic, polycarbonate lenses and various other materials.

Myopia: Nearsightedness, or myopia, is the most common error of the eye. It means you can see objects clearly up close, but they appear blurry at a distance.

Anti-Reflective Coating: This coating is applied to eyeglass lenses to reduce reflections or glare and allow more light to pass through them. The easiest way to differentiate between regular lenses and those with anti-reflective coating is that the latter will look transparent.

Bifocal: This is another one of the more common optical terms. It means that an eyeglass lens has two parts – one for seeing things from a distance and the other for seeing things up close. 

Cylinder: This is the ‘C’ on your eyeglasses prescription and it measures the degree of astigmatism (when your vision is blurry and distorted at all distances) you have. 

Axis: If you have astigmatism, you’ll see this term on your eyeglasses prescription. It shows where to place the lens correction to remedy astigmatism.

O.D. and O.S.: These are abbreviations found on glasses and contact lens prescriptions. They stand for Latin terms oculus dexter (O.D.), which means right eye, and oculus sinister (O.S.), which means left eye. 

Temple Length: This is measured in millimeters, and is the length of the stems or arms on either side of the frame. The measurement is taken from the hinge to the tip that sits over your ears. 

UV Filter: As the name suggests, this lens coating filters harmful UV radiation to protect your eyes.

What are the other terms you would like to know about? Let us know!