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Glossary
ACETATE
Acetate or cellulose acetate it’s durable, Hypoallergenic, and capable of holding exceptionally colors, it’s our signature material.
ANTI-GLARE COATING
Anti-Glare coating are a High-quality super-Hydrophobic treatment. This step is important for those who work with computers, tablet, phone and order device. These coatings improve a lens’ ability to transmit light to the eye. Improved cosmetics and visual acuity result as 8% to 12% more light can be used by the patient’s eyes.
ARM
Also known as the temple, this is the part of your glasses that runs alongside your head and holds them in place.
ASTIGMATISM
Astigmatism is a common optical condition which results in blurry vision. It results when the curve of your cornea is slightly irregular in shape. The visual condition resulting from two unequal, opposite meridians of the eye that produce two separate focal lengths and blurred image.
AXIS
The meridian in a cylinder lens where none of the marked cylinder is present.
ABSORPTION
The ability of a lens to intercept or block general or specific wavelengths of radiant energy.
ACUITY
Clarity of vision.
ADDITION OR ADD
Bifocal strength. The amount of pus power that must be added to the distance prescription to assist the eye’s accommodation at a given distance, usually intermediate or near.
ACCOMMODATION
The ability of the eye to adjust its dioptric power as the crystalline lens is contracted or relaxed to focus at variety of distances.
BINOCULAR PD
The single measured distance from pupil center to pupil center.
BEVEL
The ground inverted V shaped edge around the periphery of a lens necessary to hold the lens within the groove of a full-rimmed frame.
BICONCAVE
A lens style where both front and back surfaces are minus (concave).
BICONVEX
A lens style where both front and back surfaces are pus (convex).
BLUE BLUR
The condition of unclear vision due to the scatted blue light in the visible spectrum.
BLUE LIGHT FILTER
Blue light is a subset of light within the visible light spectrum; it’s emitted by the sun as well as screens on computers, phones, and other electronic devices. Our blue-light filtering lenses they filter out a higher percentage of blue light than any other optical lenses.
CYLINDER LENS
A compound lenses. It has a toric surface with two separate dioptric meridians that are 90 degrees apart.
DIAMETER
You may find a diameter measurement included on a contact lens prescription which is just the width of a contact lenses in millimeters. Most contact lenses are between 13 and 15 mm wide.
DIOPTER
A unit of measurement for refractive lens power. The focal length of a one diopter lens in one meter. In other words, it measures optical power.