Basketball glasses
Astigmatism correction:
Vary depending on the types of astigmatism. For
simple hyperopia astigmatism, should wearing appropriate degrees and
must axis to of convex cylindrical lens; for simple myopia astigmatism,
should wearing appropriate degrees and must axis to of AU cylindrical
lens; for complex sexual astigmatism, should wearing degrees and axis to
suitable of convex convex (or au au) composite of cylindrical lens; for
mixed type astigmatism, should wearing appropriate degrees and suitable
axis to of punch composite and into of cylindrical lens. But
whether is which type of astigmatism, the glasses should be strict
determination of axial cylindrical lens so astigmatism require
correction of effective correction of the meridional plane. For
irregular astigmatism due to refractive power in one Meridian wall is
not the same, you can't use the cylindrical lens correction, trial
contact lenses (contact lenses) correction.
TV glasses
Fake Oakleys
TV glasses
Mainly
using a virtual display technology, only 0.24-inch video glasses
through the physical display of the image projected onto the retina of
the eyeball, and equivalent to the human eye in the distance 2 m large
screen effects.
Glasses frame maintenance knowledge
1, place the glasses and custody. Glasses
took off when not in use, should be stored in a place away from
children to avoid glasses broken or break the danger to children of the
lens. When bathing, sauna or swimming in the sea,
glasses should be properly kept and avoid corrosion caused by moisture
or water glasses against. Just put it on the table, not to the convexity of the lens contacts with desktop to avoid mirror touch damage scratches. Don't
put it in the Sun or heat pack on, glasses frame a long-term contact
with light and heat, easy deformation or discoloration, such as
hyperopia glasses and reading glasses in direct sunlight place, due to
the concentrating effect of the lens and cause a fire hazard. If long time no use glasses, you should save them in the glasses in the box.
Life skills: spectacle frames that how to choose and maintain?
2, the right to clean lenses. Spectacle frames to clean lenses on a regular basis, to keep good definition. Less contaminated, wipe lens with a soft tissue or cloth. If
dirt stained on the lens are not easily erased should rinse with clear
water, stained with grease, use a mild soap to clean, with clean water,
then use a soft dry cloth napkins or glasses, do not scratch hard
objects with a sharp pick. When cleaning the glasses, be sure to use a clean-only clean the lens cleaner, be gentle. When you clean the mirror, preferably a hand nose eyeglass frames, other hand to gently wipe the lens.
3, maintenance of eyeglass frames is also important. Plastic frame glasses should avoid contact with organic solvents, avoid high temperature and ignition sources close. Metal frame in order to prevent corrosion and premature fading, not exposure to acids, alkalis and corrosive gases. Sweat corrosion of some of the human body, so glasses is not stained with sweat. Mixing glasses frame glasses should be taken and the maintenance of plastic and metal frame are the same. Beauty
products, pest control agents, drugs or items containing chemical
substances such as paint, frame discoloring or deformation, if
contaminated items over, it should be cleaned."sdwwwssa3xg"