Generality
Contact lenses are medical devices to be applied to the anterior surface of the eye. In most cases, they are used as an alternative to glasses, for the correction of refractive defects, but there are also contact lenses intended for other medical or aesthetic applications.
Many people wear contact lenses without any problems. However, to avoid infections and other complications that are dangerous to sight, it is necessary to carefully follow the instructions for their correct application and maintenance. Equally important is preventive medical evaluation, which makes sure the patient is an appropriate candidate for contact lenses and is able to handle them safely.
Before applying them
The type of contact lens prescribed determines the different ways of handling.
Application and removal
There are some differences regarding the correct procedure for the application and removal of a contact lens. According to one's anatomical characteristics, the type of lens (soft or rigid), manual dexterity and visual limitations to which it is subject, each patient has to find the technique that is personally best. In all cases, these procedures require some training and practice on the part of the user. Each corrective lens is packaged in a sealed, sterile blister, which must indicate the correct shade and expiration date. The contact lens must be " wet and clean, free of cuts, scratches or particles. If the device has a rough appearance, additional cleaning may be required. A damaged or dry contact lens should never be used.
