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Material that some frames are made out of. Very elastic, especially when placed in water.
Nylon
Materials used to make frames containing threads of Carbon. Frame will be sturdy, slim, and
lightweight. Frames will not be bendable at all. Usually only used for frame fronts.
Carbon Filter
Material used to make frames. nylon based, very sturdy, slender and lightweight. the material is
just 72% of the heaviness of cellulose acetate, so it is significantly lighter.
Polyamide
,Lenses that are good at reflecting: used for snow, water, concrete, and asphault surfaces.
Polarized Lenses
Lenses that are made to protect the eyes from harmful UV rays
UV protective lenses
Have the same prescription throughout the entire lens to correct astigmatism, nearsightedness,
farsightedness, or a mixture of those. If a person is less than 40 years old, it is likely that they
will need single vision glasses.
Single Vision Lenses
The prismatic effect that happens due to the type of bifocal and the distance prescription when
the eyes are at the reading level. it generally is less tolerable than image jump for many
patients.
Image displacement
Very reflective, usually used for sunglasses: Can lessen the wearers ability to see. When looking
at a person wearing them, you cannot see their eyes.
Mirror coated lenses
AR coated lenses have a metallic oxide coating applied to the surface for the purpose of
lessening reflection from the front, and reflections from the back. Helpful for people who have
trouble seeing in dim light, at night time, and with glare.
,Anti reflective lenses
(Hard Coat) on the surfaces of the lens, on both the front and back, that helps protect from
scratching. Although no lens can be 100% scratch proof. Manufactures sometimes apply this
coating to lenses.
Scratch resistant lenses
Usually screws are used to fix these lenses into position, and no eyewires or nylon cords are
used. Other methods used are cement, clamps or solder plugs.
Rimless Mounting
Usually screws are used to fix the lenses into position, along with a metal reinforcing arm, which
goes from the top back part of the lens, and connects the centerpiece with the endpiece.
Semi-rimless mounting
The only place the lenses are secured is at the edge, near the nose. The lenses are connected on
the bridge, and the temples are help in place with a metal arm. With these lenses, there is only
one spot where each lens is fixed on.
Numont mounting
The centerpiece of a mounting components
The bridge, pad arms, and pads.
, The tops of the lenses are closer to the face and the bottom of the lenses are farther away from
the face.
Glasses with retroscopic tilt
The tops of the lenses are farther away from the face and the bottom of the lenses closer to the
face, If the cheeks touch the bottom of the frames, then you will need to lessen the tilt.
Glasses with Pantoscopic tilt
Vertex Distance
Critical Measurement to help a person who is Aphakic
Name three frame mounting types that help to ensure that the lenses stay fixed in a frame
without using eyewires or nylon cords
Rimless mounting, semi-rimless mounting, and Numont mounting
This temple bends all the way around the ear and down to the earlobe. This is a good choice for
kids and safety glasses.
Riding Bow temple
This temple is curved around the head, with the ends bending around the ear all the way to the
earlobe. The ear part of the frame is made of a bendy spiral piece of metal.
Comfort cable temple