Contact lenses is a thin film of plastic which is fitted into the cornea, sometimes for attaining correct vision and sometimes for cosmetic purposes. Previously, contact lenses were made of glass but they have become almost obsolete nowadays. A person who has vision problems, the bending of light, also called the light refraction isn’t adequate enough to allow a clear image to be displayed to the retina. A person who is short-sighted, myopia, images at a certain distance are blurred and in a person with far-sightedness, hyperopia, distant objects appear clear while near objects appear blurred and hazy. When you wear contact lenses with the correct power, you can solve this by adding yet another medium on the top of the cornea so that the light refracts to the degree which is required for getting proper vision. Read on the concerns of this article to know more on contact lenses.
The different kinds of contact lenses available
Soft contact lenses and hard contact lenses are the two main kinds of lenses available in the current market. The soft lenses are usually made from plastic polymer and although they’re more vulnerable to tearing, they cause less infection to the eye. Soft lenses are usually available in the form of disposable lenses where a new pair of lens may be used on a monthly or daily basis. Since you can discard the used pairs, it is easier to change them. The pretty low price of the soft lenses can even make it more affordable than hard lenses.
The hard lens is also called the rigid gas permeable lens and they’re made of a silicone hydrogel. Hard lenses offer a better extent of correction for the vision issues as compared to soft lenses. Hard lenses, as the name suggests are more durable than soft lenses and they are sometimes the necessary option for astigmatism or presbyopia. Hard lens can also be used for myopia or hypermetropia but still there is always a shift towards soft lenses for such conditions.
Risk factors of wearing contact lenses
Since you have to insert your finger into your eye while wearing a contact lens, there are some problems that you may face. Here are some risk factors of wearing contact lenses.
· When you wear lenses overnight or throughout a very long period of time without removing it, this might cause irritation in your eyes
· When you use the wrong accessories like the cleaning solution, this might cause the lens to get spoiled earlier than the scheduled time
· Bad storage and not handling your lens properly can also spoil your lenses sooner than ever
· Wrong prescription can even lead to a poor fit and again cause irritation
· Sharing your contact lens with someone else is very unhygeinic
· Dry eyes can cause irritation to your eyes if you wear contact lens
· Inflammation of the eyelids
Therefore, when you’re wondering about wearing contact lenses for better vision, you may take into account the above mentioned facts on them. Stay safe and keep your eyes safe.