A contact lens is basically a cosmetic and corrective lens that is placed on the cornea of the eye. People generally choose to use contact lens due to the appearance and practicality. Eye glasses get affected by wet weather, steam up and also change the appearance of a person. Contact lenses, on the other hand, do not get affected with such climatic elements and provide a wider vision. Besides, some ophthalmologic conditions like keratoconus and aniseikonia cannot be treated with glasses. That is why contact lens is definitely better than eye glasses.
Contact lenses can be classified in several ways.
Corrective contact lens – this type of contact lens is manufactured to improve vision. Many people face the problem of refraction error. A contact lens counterbalances this mismatch and lets precise light focusing onto the retina. The medical conditions that can be rectified with the help of contact lenses are myopia (short sightedness), astigmatism, presbyopia and hypermetropia (long sightedness). Contact lenses can also be helpful in treating certain color deficiencies. A special type of contact lenses that is red-tinted may be used for treating color deficiencies.
Cosmetic contact lenses are specially manufactured to change the appearance of the eye. Such lenses may be used to correct vision but they are specially used to make eyes look more prominent and beautiful. Theatrical contact lenses are pretty famous for their capability of imparting an arousing appearance to one’s eyes. Sclera lenses are the ones that cover the white part of the eye and are frequently used for theatrical purposes. Colored contact lenses are pretty famous these days and almost anyone can wear them.
Therapeutic contact lenses are used for treating non-refractive disorders of the eye. Conditions like dry eyes, bullous keratopathy, keratitis, corneal ectasis, etc. can be treated with the help of this type of lenses.
Contact lenses are integrated forms of eye care contraptions. Only practiced eye doctors have the right to prescribe contact lens to a patient who needs them the most. An optometrist is a person who can assess a person’s eye health and prescribe the right kind of contact lens for him. There are parameters like lens material, diameter, eye power (in dioptres), center thickness, cylindrical axis and base curve radius. These factors play an important part in determining the correct type of lens to be prescribed to a specific person. So, it is essential to seek help from an eye doctor before placing an order for contact lens. Williamson County, TN has several eye check-up centers that offer professional services.