What is the period of use of contact lenses?
Many people ignore the issue of the use period of contact lenses, especially those who buy half-year disposable contact lenses or annual disposable contact lenses. Due to the discarded bottles or boxes of contact lenses, it is difficult for us to judge the expiry date of the contact lenses we wear. It is often " Overdue service", resulting in eye infections.
Many people think that a pair of annual wear contact lenses can be worn for a year, but optical research shows that the lifespan of annual wear soft contact lenses is only 2,600 hours. If worn for 10 hours a day, it can only be worn for 8 and a half months. In fact, problems may occur if you wear lenses for an extended period of time. Therefore, the useful life of a pair of contact lenses depends on the time of use each day. However, even if used in full compliance with care standards, protein deposits cannot be completely removed. If conditions permit, it is best to use frequently replaced or disposable contact lenses. The shorter the length, the healthier it is. It has been recognized by consumers that expert advice is available. Consumers choose lenses with shorter cycle times.
Experts do not recommend that people wear contact lenses for long periods of time, as this will leave the cornea in a state of hypoxia for a long time.
Recommendation: People who wear contact lenses, in addition to choosing contact lenses with good oxygen permeability, should not wear contact lenses for more than 12 hours a day, and preferably within 8 hours. Not only that, it is best to wear contact lenses while using them. It is best to equip yourself with a pair of frames, take off your contact lenses immediately when you get home from work every day, and put on spectacles. It is best to set aside one or two days a week to use spectacles, so that the cornea can rest and delay the process of damage.
How to tell if it’s time to replace contact lenses?
1. The use period of contact lenses needs to be confirmed and cannot be used beyond the expiry date;
2. If the contact lenses have visible deformation, discoloration, stains and damage during the period of use, or your eyes are blurred or uncomfortable while wearing them, you must stop using them and replace them with new ones.
Warm reminder: It is generally not easy for wearers to detect problems caused by the aging of glasses. In addition to more red veins in the eyes, sensitive particles caused by sediments and minor damage to the cornea require examination to detect. With careful care, most problems will not be serious.
