Contact lens, or just contact lenses, are small lenses placed on the cornea of the eye. Contact lenses have revolutionized the eyewear industry and have become an indispensable part of many people’s vision care regimen. In recent years, it has been possible to order custom-fit, multifocal contact lenses online, through the use of the Internet. Contacts come in a variety of styles and prescription options, making them great solutions for either improving vision quality or as a fun or convenient fashion accessory.
Contact lenses are also popular among those who wear eyeglasses or other corrective eye wear, but do not need to wear vision correction lenses all day long or for an extended period of time. Since contact lenses provide a close, stable focus and are comfortable to wear, they are a popular option for those who require vision correction but who are not allergic to or sensitive to the corrective eye wear. These individuals may require daily-wear or extended wear contact lenses. Extended wear contact lenses must be worn daily, while daily-wear lenses may only be worn a few nights a week or may be worn less often, depending on several factors including the frequency of activities performed, the duration of sleep and day-time activities, the patient’s comfort level and frequency of wearing the contact lenses, the patient’s desires, and the patient’s budget. In addition to daily-wear lenses, patients who choose to wear corrective eye wear that requires extended wear to correct vision may also require daily-wear lenses.
Once purchased and prescribed, contact lenses require no maintenance. However, contact lenses that have a disposable replacement schedule are recommended to retain their strength and effectiveness. This is especially important if the replacement schedule is shorter than the patient typically requires in order to achieve the desired results. A soft contact lens that requires a daily-wear replacement schedule is typically more cost-effective than one that requires an extended-wear replacement schedule, and the soft contact lenses will provide better visual results for the patient.
Always clean your contact lens case with a cleanser that is specifically designed for disinfecting contact lens cases. Never use tap water or any chemical cleaning agents to clean your contact lens case. This can permanently damage the plastic insert and the eyes of your eye. This is especially important if you ever plan to throw your contacts away after wearing.
Both rigid gas permeable and non-rigid lenses allow oxygen to pass through the cornea and into the eye. Some gas permeable and non-rigid lenses allow more oxygen to reach the eye than rigid gas permeable lenses do. However, not all gas permeable and non-rigid lenses allow enough oxygen to reach the eye to compensate for the lack of a thin layer of gas that naturally permeates the cornea. If you ever experience any unusual changes in vision, discomfort, redness, itchiness, swelling, or pain in your eye, it is imperative that you consult your eye doctor for an examination.
Contact Lenses are convenient and affordable. When you use them, you get the benefit of better vision at a lower cost. If you want to protect your eyes and prevent eye diseases, it is important that you always wear soft contact lenses. You can never be too careful.