Are there differences between left and right eye contact lenses? Do contact lenses have front and back sides?

Many of us have used cosmetic contact lenses, and they are much more convenient to wear than frame glasses. However, many people do not distinguish between left and right eyes when wearing cosmetic contact lenses. So let's find out whether cosmetic contact lenses can be distinguished between left and right eyes? Do cosmetic contact lenses have a front and back side?

Contact lenses are divided into left and right. Try not to confuse the left and right after wearing them, as this may cause cross infection. Most contact lens boxes have left and right markings. Be careful when soaking the contact lenses and try not to confuse the left and right. In addition to distinguishing between left and right, you also need to be careful not to wear them together with others, as this may cause infection. Cleaning and disinfection are also required on a daily basis. When wearing contact lenses, the care solution needs to be replaced in time, preferably once a day, to ensure that the contact lenses are clean and there will be no adverse reactions when wearing them. When wearing contact lenses, you must pay strict attention to eye hygiene, wash your hands frequently, avoid wearing them for long periods of time, and remove them before going to bed to avoid corneal hypoxia or infection.

Yes. Method 1 to judge whether the contact lenses are facing forward or backward: Observation. Place the contact lenses on your index finger as if you were wearing them, and then observe the edges of the contact lenses. If you look at them from the side, the curvature around the contact lenses is natural and presents a "U" shape, like a small bowl, then they are facing forward and can be worn directly. If you look at them from the side and they look like an upside-down straw hat, with the edges of the contact lenses slightly turned outward, then they are facing backward.

Method 2 to judge the front and back of the colored contact lenses: Wearing method. If you cannot tell the front and back of the colored contact lenses, you can try to put them on first. If you feel a foreign body in your eyes, or feel uncomfortable and can't stop crying, then you must have put them on the wrong way. You need to take off the colored contact lenses, put them back in the care solution, turn them over, and put them on again. If you still feel a foreign body, the colored contact lenses may be damaged, and it is recommended not to wear them.

The third method to judge the front and back of the cosmetic contact lenses: the floating and sinking method. The simplest method is to soak the cosmetic contact lenses in the care solution. If they float, it means the front side is facing up, and if they sink, it means the back side is facing up. But this method is not necessarily accurate.

Method 4 for judging the front and back of cosmetic contact lenses: color method. In fact, the colors of the front and back of cosmetic contact lenses are different. The back side is closer to the eyes and the color is much lighter, while the outward side is much darker.

Generally speaking, cosmetic contact lenses have astigmatism degrees. If the eye degree is below 50 degrees, there is no need to add the astigmatism degree. If the eye degree exceeds 50 degrees, there will be a specific calculation formula to convert the astigmatism degree into the eye degree. At this time, custom-made contact lenses are needed. When wearing cosmetic contact lenses, you must also pay attention to hygiene. Be sure to take them out before going to bed at night, otherwise it will have a certain impact on your vision. When wearing cosmetic contact lenses, you must pay attention to eye hygiene. Take them out before going to bed every night and soak them in cleaning solution. If it is a customized astigmatism lens, you must consider the issue of axis position. The axis position of the lens must be accurate, and the lens cannot be worn upside down, otherwise it will have a greater impact on your vision.

Generally speaking, if you feel a foreign body sensation when wearing cosmetic contact lenses, it is mostly to consider whether there is an infection. When the patient has conjunctivitis, there may be some foreign body sensation. Therefore, it is recommended that the patient go to the hospital for a check-up to see if there is an infection. When wearing for the first time, the eyes need a period of adaptation, among which the foreign body sensation is the most common manifestation. Don't panic at this time, because these are all normal phenomena, and you will adapt in about a week. The cosmetic contact lenses are very thin, even if they are stained with very fine hair, this feeling will be infinitely magnified in the eyes, so the foreign body sensation is very strong. At this time, you need to remove the lenses for inspection, clean them, and then wear them.