Small plastic or silicone discs to correct refractive vision errors such as nearsightedness, farsightedness, presbyopia, or astigmatism.
You must have a lens prescription to buy contact lenses for correct design and fitting. This prescription is for your comfort, safety, and corrected vision.
Contacts are a safe and effective way to correct vision problems. There are hard (rigid) lenses with the best vision correction but the least comfortable type. There are gas permeable lenses that are more comfortable and can be worn overnight and for up to 7-days.
There are soft lens that must be removed and cleaned every night. These should be replaced every year. There are also soft extended-wear lenses that can be worn for a week. There are also disposable lenses.
There are also bifocal contact lenses and monovision contacts.
Contact lenses are best when vision correction is needed all the time, with strong motivation, willing to tolerate minor discomfort during initial use, and disciplined to use proper cleaning/storage methods. Contacts are preferred when eyeglasses are not right for work or sports.
Contacts might not be best for those with arthritis, diabetes, hyperthyroidism, allergies, asthma, or other respiratory issues. If you have dry eyes, recurring eye infections, or job that exposes you to dirt, fumes, and sprays.
An eye exam for contact lenses will need extra time and possibly extra charges. This exam takes more time to measure the eye surface for proper fitting.
Contact lenses are a prescription item just like medicines. This medical device must be properly fitted to avoid discomfort, inflammation, swelling, abrasion, and other problems. An optometrist or ophthalmologist can fit contact lenses.
Your first visit for contact lenses will require additional fees for fitting and training.