In autumn and winter, the phenomenon of dry eyes of office workers increases significantly. Feeling dry and tired eyes, many people’s first reaction is to take a drop of eye drops, but do not know that this random practice of eye drops, is likely to cause more damage to the eyes. Although the name of eye drops is drops, but most people are used to using it as a health product, uncomfortable point a little, point after feeling comfortable, it is considered good. In fact, eye drops are divided into different types. The public in the drugstore common eye drops, according to the role of two types of general, respectively, lubricating and vasoconstrictor type. Lubricating eye drops mainly play a role in relieving the supplemental eye fluid and relieving visual fatigue; constricting vascular eye drops are usually used to deal with intraocular blood, after people use their eyes excessively, they often find that the eyes are covered with blood, which is a manifestation of conjunctival congestion, the effect of such eye drops is more significant at this time. The lubricating eye drops mainly play a role in relieving the liquid in the eyes and relieving visual fatigue; the vasoconstrictor eye drops are usually used to deal with the blood in the eyes, after people use their eyes excessively, they often find that the eyes are covered with blood, which is a manifestation of conjunctival congestion, and this time the effect of using such eye drops is more significant. The side effects of eye drops Some people feel very refreshed after using vasoconstrictive eye drops, and the red blood will soon disappear, but these eye drops are used to constrict blood vessels by drug means, and often use to form a dependency, if occasionally stop using, the effect is likely to rebound, and the eyes become more red. In this special reminder, some people suffering from cardiovascular disease, be especially careful with constrictive eye drops, because it is likely to lead to an increase in blood pressure, which is very harmful. Lubricated eye drops have relatively fewer side effects and fewer contraindications, but those with more than 1ml usually contain a certain amount of preservatives, which may cause some damage to corneal epithelial cells if used excessively. How can I tell the type of eye drops? The eye drops that patients see in ordinary pharmacies are often difficult to tell whether they belong to the lubricating type or the vasoconstrictor type by the description on them. Patients can distinguish by looking at the ingredients on the back of the box: those containing cellulose, vinyl alcohol and other ingredients are usually lubricant-type eye drops, and the main ingredient of vasoconstrictor-type eye drops is usually naphthazoline. It is also worth noting that “myopic patients who have the habit of wearing contact lenses must try to avoid using eye drops containing preservatives, most preservatives will be absorbed within the lens and cause damage to the cornea with long-term use, it is recommended that contact lens wearers try to use eye drops without preservatives.” Too many eye drops can cause dry eye syndrome There are some patients, due to eye disorders such as glaucoma, cataract, uveitis or wrongly diagnosed as conjunctivitis due to eye discomfort, long-term use of eye drops too often, too much, too many types, too long, destroying the normal physiological function of tears, artificially caused or aggravated dry eye symptoms. Preservative eye drops should be used up within two weeks The ingredient in eye drops that is not good for the eyes is preservatives, which can irritate the eyes, and prolonged drops of eye drops containing preservatives can cause conjunctival and corneal damage. Therefore, eye drops containing preservatives should not be used for a long time. Hormonal eye drops should be used with caution. 4% to 5% of the normal population is sensitive to hormones, which means that 4 to 5 out of 100 people who use hormonal eye drops for a long time may suffer from hormonal glaucoma. Some high-risk groups are generally sensitive to hormones and need special attention when using corticosteroids.