Here are some of the most common eye infections.
1. Conjunctivitis
Conjunctivitis is a bacterial or viral infection of the conjunctiva, the transparent membrane that lines the eyelid and cornea. The ocular redness characteristic of this disease is due to the fact that, due to the response of the immune system to the infection, the blood vessels of the conjunctiva become inflamed and more visible.
Although the symptoms of pain, swelling, and tearing can be very bothersome, conjunctivitis rarely affects vision. It is a highly contagious disease and can basically be of two types:
Bacterial conjunctivitis :
It is the most common type of conjunctivitis. It is very contagious, especially in hot times of the year. Its main characteristic is that the eye turns red and a mucous discharge occurs in the lower part of it. It begins in one of the two eyes but usually spreads quickly to the other.
Viral conjunctivitis :
It is the most dangerous type of conjunctivitis because, in addition to not being able to be treated with antibiotics, it has associated symptoms that include general malaise, sore throat and fever, something that does not happen with bacterial. It is highly contagious because the person can transmit it when they still have no symptoms. In this case, the eye acquires a more pinkish color.
2. Keratitis
Keratitis is an infection of the cornea, the transparent tissue in front of the iris. Left untreated, keratitis can be a serious infection that causes complications and permanent damage to your vision.
Keratitis presents with symptoms similar to conjunctivitis, in addition to sensitivity to light, decreased vision, a sensation of a foreign body in the eye, and difficulty opening the eyes due to pain.
Depending on the causative pathogen, there are different types of keratitis:
Bacterial keratitis :
This type of keratitis is caused by many different species of bacteria, especially the “Staphylococcus” and “Pseudomonas” genera, which manage to penetrate the cornea after injury to it or due to a lack of personal hygiene. It can be serious since if not treated it is possible that it results in blindness in the spread to other tissues.
Viral keratitis :
The Herpes Simplex Virus can cause an infection of the cornea that occurs with the aforementioned symptoms. It can be more serious since antibiotic treatment does not work.
Fungal keratitis :
Fungal keratitis develops when some species of fungi infect the cornea. Generally caused by the genus "Fusarium", these fungal infections usually occur when we have injured the cornea and have a free way to enter.
Acanthamoeba keratitis :
Acanthamoeba is a parasite that can infect the cornea especially in contact lens wearers. That is why the safety instructions must be followed, as this parasite can take advantage of poor hygienic conditions in these lenses to reach the cornea and cause its infection.
3. Stye
A stye is an infection of the edge of the lower eyelid that is detected by the presence of a red lump with pus and that brings with it
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