About Lenses

Lens Material

	Refractive Index	% thinner than CR 39
1.74 HIGH INDEX PLASTIC	1.74	Up to 65%	UV,SRC,AR COATED (THINNEST LENS MATERIAL FOR PLASTIC)
1.67 HIGH INDEX PLASTIC	1.67	Up to 55%	UV, SRC COATED
1.60 HIGH INDEX PLASTIC	1.60	Up to 45%	UV, SRC COATED
POLYCARBONATE	1.59	Up to 40%	SRC COATED, IMPACT RESISTANCE California proposition 65 Warning !! This product contains chemicals known to the state of california to cause cancer and birth defects or other reproductive harm
CR 39 PLASTIC	1.50		REGULAR PLASTIC

Lens Type

Single Vision(Check Price)

Distance Vision Only(full-time wear) (movies, driving, TV, etc.)

Near Vision Only(reading only) (books, newspaper, menu, etc.)

Single Vision lenses have only one viewing area throughout the lens. This corrected area can be for far distance, near distance or reading.

Bi-Focal (With Line)(Check Price)

Bi-Focal Lens have two distinct viewing areas within the same lens; the distance area and the near area. The distance area in Bifocal is designed like a single vision lens, while the near area contains the distance prescription and the additional amount of ADD power needed to see at a reading distance.

Progressive (No-line Multifocal)(Check Price)

Progrssive Lenses correct vision for multiful focus from distances to near without the visible segment lines seen in bifocal or trifocal lenses. Instead they have a graduated section in which the power of the lens progresses smoothly from one prescription to the other, allowing the wearer to see clearly at all distances. Transition Zone is the area of Progessive lenses where the distance vision curve gradually changes into the near-vision curve.


Single Vision	Bi-Focal	Progressive