How to enter option box --Understanding Your Prescription |
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Name : QUEENCONTACTS
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How to enter option box --Understanding
Your Prescription
A
glasses or lenses prescription is usually shown as a series of numbers in
boxes. For Example:
SPH CYL AXIS OD -4.50D -0.25D 180 OS -3.75D -0.50D 90 OD (oculus dextrum) indicates that the
readings are for your right eye.
OS (oculus sinistrum) refers to your left eye.
The
SPH (Sphere) box shows a measurement of how long sighted (hyperopic) or short
sighted (myopic) you are.
If you are short sighted, the SPH value
will have a minus (-) sign before it.
If you are long sighted, the SPH value will
have a plus (+) sign before it.
The (D) stands for dioptres which is the
standard measurement that is used. If the SPH value is between 0 and 3.0D then
you have a mild prescription. 3.0 to 6.0D is moderate and 6.0D and above is a
high prescription. The
CYL (Cylinder) box shows the strength of any astigmatism.
An eye with astigmatism will not be
perfectly spherical and will be like a rugby ball in shape. Astigmatism can be
plus (+) or minus (-) and is also measured in dioptres.
If one of your eyesight
is Myopia -2.50, please select 0 for CYL and AXIS. The
AXIS box shows the orientation of the cylinder (from 0-180 degrees).
If you can not find your AXIS in the
Options box, Please round off to the nearest integer in AXIS. EX) AXIS is 153
>> Select 150
Since glasses are away from the eyes are contact lenses are attached to the eyes, there's a difference in the vertex distance. I recommend you to check your vision of your lenses precisely. Delivery
Time
Colored contacts for astigmatism
EMS Shipping(3~5 days)+Custom manufacture
Period(1~2 Weeks) = Total 2~3 Weeks
International registered mail(10
days)+Custom manufacture Period(1~2 Weeks) = Total 3~4 Weeks
*Astigmatism contacts require 1~2 Weeks of
manufacture period for they are manufactured upon custom requests.
B.C
or DIA unlisted as the option of the product cannot be applied in manufacture.
DIA
of all our astigmatism contacts are made with 14.0mm for more comfortable
feeling.
.
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