The newly bought contact lenses need cleaning after unpacking. Although the lens is soaked in normal saline, there are still some bacteria and impurities on the surface. If you wear it directly after opening, it may cause eye discomfort. Therefore, after we take out the lens, we first rinse it with nursing solution, and then put it in a clean lens box filled with fresh nursing solution for 4~8 hours.
There are two points to note in this soaking process:
1, the use of care solution, contact lenses can only be soaked and cleaned with special contact lens care solution, and other liquids can't replace them, because the lenses are made of special materials, and the ingredients contained in the care solution can effectively kill the residual impurities on the lenses and keep the lenses clean and tidy.
2. Soaking time. Generally, the soaking time of contact lenses that have just been opened is 4-8 hours, which mainly depends on the lens cycle. If it is a moon lens, it can be soaked for more than 4 hours. If it is a contact lens, it needs to be soaked for more than 8 hours. Generally speaking, the longer the contact lens cycle, the longer the soaking time.
In addition, in addition to the newly bought contact lenses, they need to be soaked before they can be worn, and new tools such as mirror boxes, clips and suction sticks also need to be disinfected before they can be used. Newly bought care tools such as mirror boxes, companion boxes and clips need to be washed with boiling water first, and then dried. Before use, the tools that directly contact the lens, such as clips and matching boxes, should be washed with nursing liquid.
Extended data
Attention should be paid to standardized care and rational use when wearing contact lenses, otherwise it will cause the following injuries to the eyes:
Aging contact lenses will reduce the oxygen permeability of lenses, and the eyes will have a situation similar to the human body's "altitude sickness" due to lack of oxygen, which can not be metabolized normally and the resistance will decrease.
Apparent fatigue
Wearing contact lenses for a long time can easily cause dry eyes. Causes itchy eyes, foreign body sensation, watery eyes, dryness, burning eyes and blurred vision.
Eye allergy
Contact lenses will absorb protein, lipid and collagen in tears and deposit on the lens surface, which will breed bacteria, corneal edema, corneal neovascularization reaction and allergic reaction.
Reduce the harm of contact lenses
Incorrect wearing and nursing of contact lenses is an important factor leading to various eye diseases.
1. Because contact lenses are in direct contact with the cornea, strict hygiene requirements are required. Although many people know this in theory, it is easy to ignore the cleaning of lenses in daily life, or to be in a hurry or afraid of trouble, leading to bacterial infection in the eyes.
2. Cosmetics often bring troubles to contact lens wearers. For example, misuse of cosmetics can lead to contact lens deposition, eye inflammation, allergic reactions and infections. When wearing contact lenses, you should follow the principle of putting on the lenses first, then putting on makeup, and taking off the lenses first, then removing makeup. 3. People who wear contact lenses and use computers should blink more to help their eyes moist and take regular rest. It's best to keep working for about 5 minutes and look at the distance.
Corneal injury
When wearing contact lenses, there is a layer of "tears" between the lens and cornea, which just plays the role of lubrication and protection. In addition, human corneal cells protect the internal tissues of the eyes through normal natural shedding and regeneration. If stimulated by wind and sand, corneal cells will play a protective role and fall off, but they can regenerate and recover within 24 hours. The real culprit of corneal injury often lies in improper wearing and unclean nursing methods.
It is worth emphasizing that not everyone can wear contact lenses, for example, people suffering from conjunctivitis, keratitis, glaucoma, severe trachoma, abnormal tear secretion, or people who are allergic to lens materials should not wear contact lenses; Primary and secondary school students are in a period of vigorous growth and development, so it is not appropriate to wear contact lenses; In addition, people who wear contact lenses, if they encounter symptoms such as a cold and fever, had better not use contact lenses for the time being.
Contact lenses-Baidu Encyclopedia