Reading Glasses - Readers - Designing Your Own
Does Theyedoctor.com sell reading glasses?
Yes we can make any frame into a pair of reading glasses.
Reading glasses that are bought off the shelf are made from single vision lenses. The power in each of the lenses is the same. The lenses are spherical, that is they do not contain any cylinder power and therefore no axis for the cylinder. These powers are always in plus (+) in the +1.00 to +3.50. To make a pair of eyeglass frames into readers you would select the add frame and select prescription lenses from our product page.
Lens type would be single vision, standard plastic would be a good choice for most glasses, polycarbonate would be a lighter more impact resistant material choice. In higher powers a high index lens would be lighter and more cosmetically appealing.
Select the appropriate sphere lens power. Leave us a comment that these are readers.
Are off the shelf readers a good idea?
There is no substitute for having your eyes examined by your eye care professional to obtain the best prescription for your vision. Regular eye examinations may also detect early sign of eye diseases and problems in their most treatable and manageable stage.
But in general if off the shelf readers are worn for less than one hour per day, you may tolerate them well. For periods longer than one hour head aches, eyestrain and other visual disturbances may appear.
posted by Dr Becker @ 12:38 PM
High Index Prescription Lenses
The skinny on high index lenses
What does an index have to do with prescription lenses?The index in high index lenses refers to the index of refraction of the material that the lens is made of. Index of refraction is a calculated number that refers to a materials ability to bend light. The higher the index of refraction, the greater is the ability of that material to bend light.Light must be bent by a lens in order for light to be focused. With a higher index of refraction there needs to be less material in the lens in order for light to be brought into focus. What this means, in prescription lenses, is that the higher the index of refraction of a lens the thinner and lighter the lens will become. Lighter lenses are more comfortable to wear. Thinner lenses tend to be more appealing with less of the “coke bottle” effect especially in higher powered eyeglass lens prescriptions.Labels: Prescription Lenses
posted by Dr Becker @ 8:11 PM
Identifying Your Eyeglass Frames
To identify a specific eyeglass frame you need four pieces of information, all will be found on the eyeglass frame.
- Frame Manufacturer or Designer
- Frame Name or Number
- Frame Color
- Frame Size
Look for this information on the inside of each temple. Sizes may also be found on each temple or stamped on the inside of the bridge.
The manufacturer, for example may be
Shuron Eyeglasses or
Seiko Eyeglasses. Most eyeglass frames are identified by the
designer eyewear collection. Examples of designer eyeglass collections would be
Brooks Brothers Eyewear,
Anne Klein Eyewear, and
Baby Phat Eyewear.
Names of eyeglass frames range from "864" to "Zeta", in other words the eyeglass frame name may be a name or a number.
Once you have determined the manufacturer/designer and the name/number the eyeglass frame size and color must also be determined to identify a specific frame.
Sizes include the “eye size”, which is the width of each lens in millimeters, and the bridge size, also know as the "DBL" or distance between lenses. This number will appear as 52-15 or 47-21. The first number indicates the eyewear eye size and the second number indicates the distance between lenses or bridge size. Often times a small box may appear between the eye size and DBL. A number for temple length may also be indicated on your eyewear. This number represents the length of each temple in millimeters such as 135 or 145.
The color information may be a descriptive color, such as gunmetal, or a number such as 332.
To buy your
eyeglasses online, visit
ThEyeDoctor.com and save. Our customers say it best.
you saved me $110.00. WOW!
“I am extremely happy with your service and you saved me $110.00. WOW! I was also very impressed how fast I received my new specs. Once again, thank you and remember word of mouth is the best advertisement….and I have a big mouth.”
T.B.
They are perfect.
“I have received my glasses today. They are perfect. Thank you! I am very pleased. I will definitely be back as a customer and will tell everyone how satisfied I am.”
S. W.
Labels: Eyeglass Frames
posted by Dr Becker @ 9:12 AM
Understanding Your Eyeglass Prescription
Understanding Your Eyeglass Prescription
You've recently had your eyes examined and you are ready for some new prescription eyeglasses. You were handed a piece of paper, with some numbers on it, as you left your examination. You are wondering what do those numbers mean?
Your eyeglass prescription consists of lens powers needed to give you the best vision possible.
What the Numbers Mean
Your prescription will consist of numbers that represent the lens powers needed to correct the vision in each of your eyes. A typical eyeglass prescription will look something like this:
OD -3.25 -1.25 x 175
OS -4.25 -1.00 x 165
Add +2.25
The first line of an eyeglass prescription is, by convention, for the right eye. It is sometimes noted as O.D. The left eye or O.S. is the second line of your eyeglass prescription. The first column number is the spherical power for each eye. It is indicated by numbers known as diopters usually in .25 steps. Occasionally you may see .12 steps but this is rare. Sphere powers are identified by either a plus or minus sign. This is a very important to know because a minus (-) power corrects the vision problem nearsightedness and a plus (+) power corrects farsightedness. So if the sphere power of your prescription is a negative number you are nearsighted and if the sphere power is a positive number than you are farsighted. The larger the number the greater the degree of nearsightedness or farsightedness.
The second column of your eyeglass prescription is called the cylinder power. If there is a number in this column that means that you have astigmatism. The same plus and minus number conventions as the sphere power apply to the cylinder of your prescription. There may be no number in this column or there may be a sph. or sphere written in this column. In either case there is no power so you have no astigmatism. It is possible to have astigmatism in one eye and not your other.
The last column of your prescription is the axis. This represents the direction or location of your cylinder power. If there is no cylinder power in your eyeglass prescription. than it cannot and will not have an axis number indicated. If you have a cylinder power then it will have an axis. This is a measurement in degrees from 0 to 180. Only half of the 360 degree circle are used because 90 and 270 would be identical.
So if you know your sphere power cylinder power, and axis for each eye, you know if you are nearsighted, farsighted, or have if you have an astigmatism.
Occasionally a prescription may have a prism power. This is usually for people who suffer from diplopia (double vision). It may be a fraction or a decimal such as 1/2 or .75. If there is a prism power it must also have a direction or a base. This is either up, down, in, or out. Prism is relatively rare in occurrence.
A multi focal prescription such as bifocal, trifocal, or progressive lens will also have an add power. This power is in addition to the sphere, cylinder, and axis and is indicated on the next line of the prescription. It is always a positive number such as +1.25 or +2.25. This is the amount of extra focusing power to enable reading or near vision. If you have an add power this means you have a condition called presbyopia.
The last number need to complete an eyeglass prescription and fabricate a new pair of eyeglasses is the pupillary distance otherwise know as known as "PD". It is the distance, in millimeters, between the centers of the pupils in your eyes, for example 62. This is further described as distance PD and near PD such as 63/60. Distance PD is when you are looking straight ahead and near PD is when you are looking close. When you look close your eyes turn in, therefore the near PD will always be less than your distance PD. Each eye can also be measured individually. This is called a monocular PD. It would be expressed as 31/30 or 31/31 depending on your symmetry and facial feature. An adult PD varies little with time.
NOTE: A written eyeglass prescription may or may not contain a PD measurement.
Make sure your prescription is current by having your eyes examined regularly to insure you are seeing as clearly as possible. Eyes do change gradually over time and it may be so gradual that you do not notice. Routine eye examinations also screen for the silent stealers of sight such as glaucoma and cataracts.
Did you know that you have a legal right to obtain your eyeglass prescription from your eye care professional? That's right. Request your prescription at the time of your eye examination or request it later, it's your right.
Many wise consumers are realizing significant savings by ordering their new eyeglasses online from Theyedoctor.com
posted by Dr Becker @ 10:20 AM
