CAT | Bifocals Progressive
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Trifocal Safety Glasses Protects Your Eyes
0 Comments | Posted by sandy in Bifocals Progressive
First of all, do you know what are trifocal safety glasses? According to the words, eyeglasses with three divisions of correction in the lenses are called trifocals. These are considered to be better to protect your eyes than bifocals, although it sounds harder to see through.
The implying principle is simple – when a person is [...]
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Use Rimless Varifoca Spectacles To Enhance Your Looks
0 Comments | Posted by sandy in Bifocals Progressive
Do you believe you will look different, in accordance with different glasse? Do you believe use rimless varifocal spectacles can make you more attractive?
Exciting developments are being advanced over the total eyewear spectrum, and frame figure is no exception to that rule. Take frames that are wider than they are deep, as these will make [...]
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Why Should People Give Trust to Trifocal Glasses?
0 Comments | Posted by sandy in Bifocals Progressive
You maybe familiar with bifocals, but I am sure that you are quite strange with trifocal glasses, which are a kind of glasses. Trifocal glasses could offer people good visions and beautiful apperance.
Trifocals are the best bet against presbyopia that is available today. It helps to address all the problem areas simultaneously. There is just [...]
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A General Review Of Progressive Lenses
0 Comments | Posted by sandy in Bifocals Progressive
Generally speaking, progressive lenses which are basically no line bifocals are made from wide use of computers have a wider range of intermediate zone. These lenses can help you to correct your vision .These lenses are very fitting for people who do not want others to know they are wearing glasses. Here are a general [...]
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Take an Alert on Buying Progressive Glasses Online
0 Comments | Posted by sandy in Bifocals Progressive
Since the highly development of internet, more and more people are cathching up with the trend——buying goods on line. Though, it could offer us some advantagessuch as cheap price, there are also many shortcomings. Take buying progressive glasses online for an exampe.
First of all, there are some shortcomings of buying online progressive eye glasses. It [...]
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How to Construe Progressive Eyeglass Prescription Correctly?In fact, eyeglass prescriptions written by eye doctors worldwide come in a standardized format with standard notation. There are some basic symbols and numbers on each of eyeglass prescriptions.The progressive eyeglass prescription can present us a clear picture. When 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. The meanings of the numbers. 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: OS -4.25 -1.00 x 165 OD -3.25 -1.25 x 175 Add +2.25 The fist 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 second 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 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. 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. 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. 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. NOTE: A written eyeglass prescription may or may not contain a PD measurement. 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. If you still have something puzzling, you can consult some doctors or surf the internet and input“How to Construe Progressive Eyeglass Prescription Correctly?
0 Comments | Posted by sandy in Bifocals Progressive
In fact, eyeglass prescriptions written by eye doctors worldwide come in a standardized format with standard notation. There are some basic symbols and numbers on each of eyeglass prescriptions.The progressive eyeglass prescription can present us a clear picture.
When you were handed a piece of paper, with some numbers on it, as you left your examination.,you [...]
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Advantages of Bifocal Sunglass Polarized
0 Comments | Posted by sandy in Bifocals Progressive
Bifocal sunglass polarized have never brought my notice until this morning when my broyher invited me to accompany her to choose glasses, for he couldn’t see clearly those days as a result of hard study. Therfore I opened my computer and inputed” Advantages of Bifocal Sunglass Polarized”. Then, some information came into my view.
Jaw-dropping styles [...]
