Contact lens, or just contact lenses, are small thin lenses usually placed directly on your eyes. These contact lenses are prosthetic lenses used by more than 150 million people around the globe, and they are worn for corrective vision, aesthetic or therapeutic reasons, or both. Contact lens use has decreased dramatically over the past few decades due to many health hazards associated with contact lenses, but they still have a growing market. Although corrective lenses are not always necessary, people wear contact lenses to improve their appearance and function.
Today’s contact lens materials include both rigid and soft lenses that provide different levels of permeability for the eye. The level of permeability is important in maintaining the eye’s moisture and to avoid irritation. One key factor that contributes to eye irritation is the amount of oil present in the eye; the more oil there is, the more permeability there is. Contacts which are too permeable cause redness, irritation, and even damage to the eye, while contacts with too little oil can lead to eye infections and temporary loss of eyesight. Therefore, when considering a new contact lens, your optometrist is likely to ask you about your current eye health to determine the best lens material for your needs.
Contact lenses, which are composed primarily of one or two layers are a popular choice for most individuals. These lenses have greater permeability and are often made with a combination of synthetic and non-synthetic materials. Additionally, contact lenses that contain a variety of ingredients such as antioxidants, proteins, and moisture-releasing lipids can help relieve dry eyes and reduce the development of bacteria. However, if you suffer from frequent eye infections, your eye doctor may advise against using these types of lenses, as these lenses may be irritating to the eye.
As an individual gets older, he or she may begin to notice that his or her vision is deteriorating. For this reason, contact lens wearers are advised to purchase these products at an early age to combat eye problems. Additionally, as our eye ages, the natural moisture in the eye is gradually depleted. This causes the eye to become drier and more easily irritated. By purchasing lenses which contain increased levels of moisture, dry eyes and other eye conditions can be alleviated.
If you suffer from astigmatism, you may also benefit from wearing a contact lens. Currently, there are three main categories of contact lens for astigmatism: rigid gas-permeable lenses, semi-rigid gas-permeable lenses, and soft gas-permeable lenses. Typically, when a patient suffers from astigmatism, he or she will choose a specific kind of lens to be prescribed by their optometrist. Within this category, there are several different categories including:
As you can see, there are several different options available for those who suffer from certain vision impairments. From toric contact lenses to soft contact lenses, everyone can find the perfect solution. To find out more about the specific options you have, speak with your optometrist. He or she will be able to determine the best option based on your specific condition. Contact lens manufacturers offer many different styles for those who wear them, so everyone can find the perfect fit.