If you sleep less than 8 hours at night, will it affect the correction Currently, the population of keratoconus wearers is mainly students, who are generally overburdened with schoolwork and sleep deprivation. For moderate myopia or above, keratoplasty lenses should be worn for 8 to 10 hours a day. If you sleep less than 8 hours, your naked eye vision may not reach the best corrected visual acuity after lens removal, or it may reach the best corrected visual acuity, but it will be maintained for a shorter period of time, which will not be able to satisfy your eye needs for the whole day. If you can not guarantee the sleep time, you can put on the lenses in advance before going to bed, and the time should be no more than 2 hours. There is a risk of lens sticking, misalignment, and blurring of near vision when lenses are worn early. For this reason, you need to get permission from your doctor to wear your lenses early, and you need to recheck the position of your lenses before going to bed. Sleep deprivation will affect the health of your eyes regardless of whether or not you are wearing Keratoconus. Sleep deprivation will also cause other discomforts such as dry eyes, eye pain, eye fatigue, and loss of concentration. Therefore, in order to protect your child’s eye health and maintain good lens wear, please ensure sufficient sleep as much as possible. Misconceptions of parents of children wearing plastic lenses 1, the diameter of corneal plastic lenses is smaller than the wearer’s cornea, and there is a certain gap between the cornea, therefore, the fitting is appropriate, the cornea is gradually deformed by the rules and maintain a stable change, and the normal development of the child’s eyes will not be affected by long-term wear. Infection is caused by improper daily care and corneal damage. Proper fitting and careful care can avoid the occurrence of infection. Wearing them for no more than 10 hours a day and continuous wearing every day will not increase the infection. 3. The materials of night wear keratoplasty lenses are highly oxygen permeable materials, and we wear them at night and take them off on the day, not continuously day and night, so we don’t have to worry about the lack of oxygen caused by continuous wearing every night. How to avoid corneal plastic lenses breakage Corneal plastic lenses are a kind of hard contact lenses, the material itself has a certain degree of brittleness, coupled with the thin thickness of the center of the finished lenses, so you have to be extra careful in the process of cleaning and removing the lenses. 1, the lens has a concave and convex surface, will not be reversed like soft contact lenses, at all times should be the concave side up. Once the convex side falls on the desktop or smooth ground, the lens will be attracted by the negative pressure, and the edge of the lens will be abraded or crushed if you pick it up hastily. The correct way is to pick up the lens with the help of suction stick or dip your hand in water and gently stick up the lens. 2, cleaning, concave surface upward in the palm of the left hand, the right hand index finger gently press the lens, in the palm along the horizontal, vertical and two oblique (“m” shape) a total of eight directions gently scrubbing, this step is used to clean the outer surface of the lens, be careful to exert too much force, resulting in broken lenses. The inner surface of the lens is scrubbed radially from the center to the edges, dividing the inner surface of the lens into four quadrants, each quadrant being cleaned one by one. Lenses in the cleaning and rinsing process, the force to be gentle, along the lens curvature, never against the lens curvature force, to avoid uneven force due to lens damage caused by the lens. 3, after cleaning the lens should be rinsed with cool white or pure water, winter temperature is low, it is recommended to use close to room temperature water to rinse the lens, if wearing the lens out or parents to bring the lens to the unit to clean, into the room, do not immediately clean the lower temperature of the lens, at least to stay more than half an hour, and then open the cleaning, and with room temperature water to rinse the lens. 4, the edge of the lens is relatively thin, keratoplasty lenses than the general diameter of hard lenses is large, in the lens case should be put into the lens box groove with the hands to support open before putting; out of the same support open the lens box groove, to prevent the edge of the lens is damaged.