What does artificial tears have in it? Artificial tears, also known as artificial tears drops, are a common over-the-counter medication used to alleviate dry eye symptoms. They mimic the natural tears produced by the eyes, providing relief from discomfort, irritation, and redness. But what exactly is in these artificial tears that makes them so effective?
Artificial tears typically contain a combination of ingredients that work together to mimic the composition of natural tears. The primary ingredients include:
1. Carboxymethylcellulose (CMC): This is a thickening agent that helps to keep the tears on the surface of the eye for a longer period, providing sustained relief.
2. Hydroxypropyl methylcellulose (HPMC): Another thickening agent that helps to maintain the tear film’s stability and reduce evaporation.
3. Boric acid: This ingredient helps to maintain the pH balance of the tears, which is important for eye health.
4. Calcium chloride: This ingredient helps to restore the tear film’s osmolarity, which is the concentration of solutes in the tears.
5. Sodium chloride: This ingredient helps to restore the tear film’s electrolyte balance.
6. Polysorbate 80: This surfactant helps to disperse the tears and prevent them from sticking to the eyelids.
7. Preservatives: Many artificial tears contain preservatives such as benzalkonium chloride or thimerosal to prevent bacterial and fungal contamination. However, some preservative-free versions are available for those who are sensitive to these ingredients.
While these ingredients are generally safe and effective, it’s important to note that some individuals may experience side effects or allergic reactions to certain components. If you have a known sensitivity to any of the ingredients in artificial tears, it’s best to consult with your healthcare provider before using them.
Artificial tears can be used for various reasons, including:
1. Temporary relief from dry eye symptoms: This is the most common use of artificial tears, providing immediate relief from discomfort and irritation.
2. After eye surgery: Artificial tears can help to maintain the tear film’s stability and reduce the risk of infection after eye surgery.
3. After contact lens wear: Artificial tears can help to maintain the tear film’s stability and reduce the risk of eye irritation caused by contact lens wear.
4. During prolonged computer use: Staring at a computer screen for extended periods can cause dry eye symptoms, and artificial tears can help to alleviate these symptoms.
In conclusion, artificial tears contain a combination of ingredients that mimic the composition of natural tears, providing relief from dry eye symptoms. While they are generally safe and effective, it’s important to be aware of the ingredients and consult with your healthcare provider if you have any concerns or allergies.
