Cheap prescription eyeglasses are not always a bargain

Today it is possible to buy cheap prescription eyeglasses not only in specialized optics, but also in markets, supermarkets, pharmacies and even on the Internet. Because of their lucrative price, they are still more and more coveted among people. However people should realize that such eyeglasses have very poor quality and properties. Wearing of these eyeglasses can bring more harm than benefit.

Eyesight correction by disposable prescription eyeglasses

Although such a cheap (disposable) prescription eyeglasses should not cause organic damage in principle, they can cause various health problems from headaches, fatigue to red eyes, especially when long-term usage.

The problem is that such cheap prescription eyeglasses are sold as finished products and it is not possible to adapt them to a particular wearer. The biggest problem is that many people do not have the same correction in both eyes or they suffer from astigmatism and in the case of mentioned prescription eyeglasses it is not possible to choose a different diopter for each eye and certainly it is impossible to find eyeglasses with cylindrical lenses. Diopters are always the same for both eyes and always without cylinders.

If by chance you are among those who have the same value of diopters in both eyes and you do not suffer from astigmatism it is still not a reason for joy. Each of us has a different value of PD (pupillary distance). It means that the spacing of the eyes is different, even for each eye. When making prescription eyeglasses it is essential consider also this parameter. In cheap, one-shot eyeglasses the distance is fixed and it is not possible to adapt it according to needs of the wearer. If this parameter is not considered, so-called prismatic effect may occur there (when the image is pushed away by a diopter, which is included there in some way) as a consequence. Then the motor apparatus of the visual analyzer compensates this by eliminating the error. Certain muscle groups are involved and then it leads to fatigue, flushing and headaches.

Quality of cheap prescription eyeglasses (frames and glasses)

Another drawback of these cheap prescription eyeglasses is the quality of glasses. Usually these are ordinary pressed films that do not fulfill necessary optical properties, not saying about surface modifications as antirefex. Reinforce against chafage or hydrophobic and oil modification is not there at all. Result is the increased eyestrain.

If your eyeglasses do not fit you and it is necessary to regulate them or order a replacement part or exchange glasses, it is basically impossible. Materials, which such eyeglasses are produced from, cannot be modified or disassembled. Even individual parts cannot be replaced. Also from the health point of view such materials can cause problems, especially for allergy sufferers.

Recently Internet shops have been created. They will make prescription eyeglasses as you wish, it means that they make them according to your individual parameters and the quality of glasses and frames is usually good but the problem is that they do not see you and therefore cannot consider whether the parameters you have entered are really right. The choice of the glass itself is also up to you and different types of frames require different types of material. Therefore it is always good if you have someone who can give you professional advice. This is not possible without a personal contact.

That is the reason why we recommend you to buy prescription eyeglasses in specialized optics.