CONTACT LENSES: Lenses
The use of contact lenses (also known as contact lenses or pupilentes) gained much popularity over the past two decades. It is estimated that currently more than 130 million people worldwide use them frequently. Contact lenses have some advantages over glasses, as comfort for sports, a wider field of vision and the fact that they are virtually undetectable, which ends up being aesthetically very convenient.
Contact lenses have three basic guidelines:
Degree vision correction, whether for nearsightedness, farsightedness, astigmatism or presbyopia.
Cosmetics, as in the case of colored contact lenses. Therapeutic correction of certain eye diseases such as keratoconus or after surgery.
The cosmetic use of the lens has become very popular. Some people use colored lenses to change eye color. Others use stylized lenses to alter the shape of the eyes, which is very common in movies and parties. In the United States, during the celebration of Halloween, it is common that people use this type of lenses as part of their costumes.
Contact lenses are usually divided into jelly and rigid.
Contact lenses gelatinous
Are contact lenses more comfortable and easily adaptable, making them the most sold and used.
Among the gelatinous lens there are several brands, consisting of different materials. Each has its own rate of oxygenation of the cornea and the accumulation of debris. Depending on these characteristics, time of use can vary widely:
– Contact lenses for a day: they must be discarded daily. Are ideal for people who wear glasses sporadically or have sensitivity to disinfecting solutions, since this type of lens dispenses its use.
– Contact lenses for two weeks: they can be used for up to 15 days. We suggest removing them to sleep, although some can be used for up to six days without interruption.
– Contact lenses for a month: they must be worn during the day and removed at night, however, some brands are approved for use without interruption for 30 days.
Deciding which type of contact lens is most appropriate is individual and should be taken by the ophthalmologist.
Contact lenses rigid gas permeable
Contrary to what many think, the current rigid contact lenses are less harmful to the eyes. However, they are more uncomfortable and require more time to adapt.
Currently, less than 10% of the lenses sold are rigid.
Complications of contact lenses
The use of contact lenses is not a superfluous procedure. Although we are quite safe, if not taken proper precautions may cause serious eye problems including infections and permanent damage to vision. For more modern than the current contact lenses, all cause some degree of obstruction in the oxygenation of the cornea and can lead to the destruction of their cells if used incorrectly.
Remember that our body contact lenses do not stop being a foreign body in the eyes for several hours per day several days a week. If they are well cared for, accumulate excess debris and proteins, and may even become infected with fungi, bacteria or amoebas.
The handling of contact lenses without proper hygiene can cause eye infections, the most common stye.
Therefore, never use lenses without the guidance of an ophthalmologist.
Taking care of your contact lenses
• Keep your hands clean if you handle your lenses. Wash with mild soap, preferably.
• When drying hands after washing Certify that there remains a towel on your toes.
• Keep nails trimmed to avoid dirty and eye injuries when removing or putting on contact lenses.
• Use lens cleaning solutions according to the directions of your eye. Various types of lenses need different hygienic care.
• Before putting lenses always get certified that there is no visible damage or debris.
• Keep your lens case clean always. Wash once a week with hot water and restriéguelo with a clean brush. No need to use soap.
• Change your kit every six months at least.
• Always put on the lenses before applying makeup to avoid contamination.
• Whenever possible, avoid sleeping with your glasses, even when permission. During sleep, the lenses have no use and you give rest to your eyes.
• If there are signs of infection or irritation, remove the lens and go to the ophthalmologist.
• Even if all is well, an annual consultation with the ophthalmologist is always appropriate.
What NEVER to do about your contact lenses
• Never use saliva to clean your lenses. Our mouth is one of the body regions with the highest concentration of bacteria.
• NEVER wash your glasses with water from the sink or any product that has not been explicitly stated by the ophthalmologist. The use of tap water for cleaning is associated with an increased risk of contamination by amoebas.
• NEVER use the lenses for longer than indicated
• NEVER change lenses with your friends. The lenses are personal and not transferable.
• Never sleep with your lenses if you have not been authorized. Not all lenses can be worn during sleep.
• Never reuse cleaning solutions. Once used, they should be dismissed from the case.
Contact lenses and eye drops
There are basically two types of eye drops, those with drug and those who have little lubricating materials. Any drug possessing drops SHOULD NOT be used in contact lenses, as they may damage them. If the use of eye drops with medication is required, the lenses should be removed, using the drops and only after twenty minutes you can put contact lenses again.
Among the lubricants that are barely drops and can be used with contact lenses, we cite:
– Fresh Tears
Discomfort related to contact lenses
Contact lenses should go unnoticed by the patient. If the lens is leaving red eyes, blurred vision or pain occur, discontinue use and see your ophthalmologist. You could be developing a corneal ulcer.
A lens that causes burning eyes immediately after being placed may be dirty or residues of cleaning products, are liquid own lens or soap residue on fingers.
If you place the contact lens and after a while noticed her presence, with a foreign body sensation in eyes, probably requires a personalized prescription. The lenses are made from standard sizes and curvatures, which may not be the most suitable to you.
If you feel very itchy eyes with glasses, you may be allergic to any component of the contact lens or other cleaning products.
Another common complaint is discomfort that arises at the end of the day. This can be caused by poor oxygenation of the cornea after several hours with the contact lenses. Sometimes changing the type of lens support.
The fact is that the lenses should always be comfortable. If you feel uncomfortable, do not force their use. See your eye doctor and explain the discomfort that is happening.
Contact lenses for eye strain
Patients with presbyopia, the famous eye strain that comes with the passing years, they can continue wearing contact lenses. However, some adaptations are necessary. The simplest is to continue using the lenses for distance vision and wear glasses to read closely.
Who does not want to wear glasses, you have three options:
– Use a contact lens for near vision in one eye and one for distance vision in the other. It may seem strange, but this works very well. This method is called monovision.
– Use bifocal contact lenses. Yet, what in theory would be an ideal solution in practice is an option with which many patients do not adapt. Most prefer to use just the monovision method described above.
-Use a lens for distance vision in one eye and bifocal lens in the other eye.