Common causes of ophthalmic keratitis in Xi'an
Ophthalmic keratitis is a common eye disease, which may be caused by different reasons. The common causes of Xi'an ophthalmic keratitis will be described in detail from four aspects: environment, infection, corneal injury and gene.

environmental factor
1. Climate factors: Xi'an has a dry climate, and there are many dust and particles in the air. These small particles attached to the eye surface will cause eye discomfort, which will lead to keratitis.
2. Intense ultraviolet ray: Xi'an has strong sunlight, and long-term direct exposure to intense ultraviolet ray may cause corneal damage and inflammation.
3. Air quality: Xi'an has poor air quality and serious air pollution. The particles and harmful gases contained in the air will cause damage to eye tissues.
Infectious factors
1. Virus infection: Common ocular virus infections include herpes virus, influenza virus, etc. When these viruses infect the eyes, it is easy to cause ophthalmic keratitis.
2. Bacterial infection: Bacterial infection is one of the main causes of ophthalmic keratitis. Common bacteria include Staphylococcus aureus, streptococcus, etc. When these bacteria infect the eyes, they will cause redness, swelling, pain and other symptoms.
3. Fungal infection: Fungal infection is a relatively rare but harmful cause. When the eyes are exposed to a humid environment for a long time, such as a swimming pool, they are prone to be infected with fungi, leading to ophthalmic keratitis.
Corneal injury
1. Improper use of contact lenses: If contact lenses are worn for a long time or used incorrectly, it is easy to cause corneal infection and inflammation if they are not properly cleaned and maintained.
2. Eye trauma: eye injuries caused by object stimulation, damage or surgical errors will make the cornea vulnerable to inflammation and infection.
3. Chemical exposure: contact with harmful chemicals, such as strong acids and alkalis, will seriously damage eye tissues and cause keratitis.
Genetic factor
Some people may have gene mutations related to keratitis, which may make their eye tissues more vulnerable to infection and inflammation. This genetic pattern may lead to increased susceptibility to keratitis in individuals.
Summary
The common causes of ophthalmic keratitis in Xi'an mainly include environmental factors, infection factors, corneal injury and genetic factors. Xi'an's dry climate, strong ultraviolet radiation, air pollution and other environmental factors are likely to lead to eye discomfort and keratitis. Virus, bacterial and fungal infections, improper use of contact lenses and eye trauma are also common causes of keratitis. In addition, individuals' genetic factors may also make them more susceptible to keratitis infection. Therefore, when we prevent keratitis, we need to pay attention to environmental hygiene, use glasses correctly and protect the eyes from injury. At the same time, early detection and treatment of eye infection symptoms will help reduce the risk of keratitis.