Contact lenses are vision-enhancing prostheses used for optical, aesthetic and therapeutic purposes. During the day, the lens comes into contact with the special and valuable tissues of the eye. This contact can cause a lot of inconvenience if the rules of use are not followed. The human body is surrounded by a system that protects itself from foreign bodies. If contact lenses are not used on the advice of a doctor, they are considered foreign and may cause allergic reactions. Improper use of unsuitable lenses increases the risk of infection. Consult your doctor to select the most suitable contact lens for your eye. Technical control is carried out, for example, the position and movement of the lens. It is necessary to determine the size of the pups and the slope of the stratum corneum. The degree of lacrimation of the eyes should be determined. Insert, delete,
the inner surface of the contact lens should be aligned with the slope of the stratum corneum. Oxygen permeability, water holding capacity and surface contamination vary from material to material. Oxygen impermeable and incompatible lenses destroy the protective system of the eye. These days, young people can easily get colored lenses and use them without consulting a doctor. Although these lenses need to be changed once a month, they are used for 6 months or even 1 year. Hands should be thoroughly washed before touching the lens, and the lens containers should be washed daily with soap and water, dried outdoors and renewed once a month. Entering the pool, sauna, shower with contact lenses can cause infection. Even if there are no complaints from users, you should consult a doctor every 6 months. Over time, as a result of the accumulation of some lacrimal substances and dust, a layer forms on the upper layer of the lens. the water ratio changes, the oxygen permeability decreases. If lenses are not changed once a month, they can cause infections and allergies with prolonged use.
During the day, when the eyes are open, the corneal layer can receive the oxygen it needs from the air. Oxygen pressure drops when the eyes are closed during sleep. Since the eyes are closed at night, the lens creates a mechanical barrier between the oxygenated cornea. May prevent oxygen from entering the eyes. Remove the lens when you sleep at night.
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