Contact Lenses without Prescription- A Review
Today it’s possible to buy contact lenses without prescription anywhere in the internet. There are a few aspects that we shall consider when doing this kind of buying.
First, if you really need contact lenses and you are already a user of these, the most important thing is that you have a prescription therefore you have to see a qualified person (optometrist or ophthalmologist) so that he can check the condition of your eyes. If this is the case, you can chose to buy your contacts lenses online, because you can find the same product with a big price difference between any street stores.
The explanation for this is the fact that a street store has bigger expenses to maintain the services such as employees, rent, taxes, bill, etc. On the other side, virtual stores have a big advantage because the only expenses that they might have are related to the maintenance of the site online. There is no need of having stock as well. They simple can order the products when clients request. Obviously, when the offer is too much, risks increases at the same proportion. There are online companies that sells their contact lenses and don’t ask for any evidence regarding prescription.
Therefore, they may have suspicious quality products and having only concern about the payment. However, that’s a risk that an individual take when he is looking to buy contact lenses without prescription. There are several risks, not only monetary but also related with health. The need of contact lenses are due an eye malfunction, therefore using any kind of exterior element for the correction without knowing the correct specification of it can, and will be hazardous for your eyes.
The risks can involve several issues as eye inflammation or attrition resulting in, as extreme case, eye tissue damage. The risk of infection is also present when people borrow their contact lenses from others. This case usually happen regarding coloured contacts lenses used as fashion proposes. A prescription comes with lots of specific factors that differ from person to person. Exams that are made by professionals reveal the different parameters, which have particular worth for the doctors as well as other professionals. Here‘re those parameters:
Refractive power
Refractive power is basically the distance that your eye can reach with sharpen image.
Base curve
Base curve is the measurement of the cornea curvature, and shall match with the back curvature of the contact lens.
Diameter
Diameter is the length of the contact lens, which gives the area where the contact lens will alight on the eyes.
Cylinder
Cylinder refers to the amount of dioptres needed to correct astigmatism.
Axis
Axis gives the orientation of the cylinder in the way to compensate cornea’s irregularities.
As you can see, eyes have different parameters that must be considered. That’s why there are specific machines and professionals to help you out with your viewing problems. Buying contact lenses without prescription is a risk for those who try to solve their eye problems with no professional assistance.