How to understand the glasses prescription

How to understand the glasses prescription

The forms of the glasses prescription are in a great variety, but the basic items are the same such as name, sex, age, occupation and so on.

The most important items are the nature of the sphere lens, the diopter, the refraction degree of the column lens, the axial position, uncorrected visual acuity of the right and left eyes, corrected visual acuity as well as the pupil distance.

Now I would like to tell you the meaning of the marks in the prescription.

OD / RE / R : right eye
OS / LE / L : left eye
+ : Convex lens ( for the hypermetropia )
- : Concave lens （for the myopia）

After “ +” or“ –” , the Arabic value is lens’ diopter, but what needs to pay attention to is that diopter in the prescription glasses and the strength are not the same, a difference of 100 times between them, for instance, - 1.00D is equal to 100 degrees which we usually say;

DS : Spherical lens （both for hyperopia and myopia ）
DC : Cylindrical lens ( for astigmatism )

Behind DS, there is a mark “()”, representing the spherical lens “United” the following the cylindrical lens; at the back of DC, there is also a mark “×”, separating the front degree of astigmatism from the behind the astigmatic lens axis （1～180°）;

PD : pupil distance
For example,
Ｒ：—2.OO DS () — 2.OO DC × 90°
ＰＤ：63mm

It stands for right eye，200 degrees of myopia with 200 degrees of astigmatism, degree of astigmatism axis is 90 °, the pupil distance is 63 millimeters .

How to clean your glasses

Take care of your glasses by cleaning them the suitable manner. While following these daily simple ends, you will prolong the life of your reinforcements and objectives.

Difficulty: Easy
Necessary time: a few minutes

Here ’s how:
1. Rinse your glasses with water before cleaning them. this prevents the tiny particles from striping the objectives.
2. Clean the objectives with a pickling solution of jet or liquid of monocle. Gently rub the two sides on the objectives, and all sides of the reinforcement, between your inch and index.
3. The rinsing with tepid water and dry glasses with a soft and nonfluffy cotton fabric.

Ends:
1. Never extend your face out of glass downwards. that this prevents to stripe the objectives.
2. Remove your glasses with the two hands to prevent to fold the reinforcement.
3. Always store your glasses in a hard case.

Of what you have need:
* tepid water
* jet of monocle or pickling solution of liquid
* soft and nonfluffy cotton fabric

How to Remove Scratches from Plastic Eyeglasses

Knowing how to remove scratches from plastic eyeglasses can be a very useful tool for those looking to avoid extra fees charged by an optician. Often times prolonged usage of eyeglasses can result in the eventual damage to the surface of eyeglasses that come in the form of small scratches or abrasions on the lens. If left unchecked the scratching on the lens can develop into a problem that becomes impossible to mend without the purchase of a new set of eyeglasses. In learning how to remove scratches from plastic eyeglasses, it is important to realize that although there are many do-it-yourself methods advertised self-repair may not be the best option and that the use of a professional optician may help in securing a fixed pair of eyeglasses.

A kind of poor man’s method for repairing eyeglasses would be to use a DVD/CD repair kit. If the scratches are not too severe spraying the solution provided with the kit along with buffering the surface with a soft cloth. This may take a few times to get the eyeglasses to a preferred state. In learning how to remove scratches from plastic eyeglasses, it is of course of the utmost importance that the person doing the cleaning not causes further damage to the eyeglasses.

Another trick for those hoping to avoid a trip to the optician involves using Pledge furniture polish cleaner. In the same manner as you would use solution from a DVD/CD cleaner, the Pledge furniture cleaner, when applied to the lens, should fill in the scratches caused by wear and tear. Though not 100% failsafe, it might have a positive effect on the lens, at least enough to know how to remove scratches from plastic eyeglasses the next time you encounter the problem.

Sometimes, however, the problem lies with the anti-reflective coating on the lens. In this case the best solution in how to remove scratches from plastic eyeglasses would be to simply take the glasses back to the store where they were originally bought and ask if any repair work can be done to rectify the problem. More often than not a new pair of eyeglasses will have to be prescribed...