Eye infections

Types of eye infection & their causes

Eye infections can happen in one or both eyes, & are caused by the same viruses, bacteria, & fungi that cause infections elsewhere in the body.
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Eye infections are not dangerous, but the can cause a lot of discomfort. The most common symptoms of an eye infection include:


The most common eye infections are caused by bacteria or viruses. Infectious conjunctivitis (also known as “pink eye”) is the most common eye infection. It is highly contagious & spread by hand-to-eye contact. Styes are also contagious, but they can also start on their own, as they happen when bacteria from the skin get into an eyelash hair follicle.
Infections such as syphilis, gonorrhoea, tuberculosis, Lyme disease, mycosis (fungal infection) & some parasites can lead to inflammation in different parts of the eye as well. These are called blepharitis (of the eyelid), keratitis (of the cornea), vitritis (of the liquid inside the eye), chorioretinitis (of the retina & related blood vessels), or neuroetinitis (the optic nerve).


Watery eyes
A scratchy feeling on the cornea
Sensation of having something stuck in the eye
Aversion to bright light (photosensitivity)
Tiny blood vessels visible in the eyes (bloodshot eyes)
Swelling of the eyelid
Discharge (watery or clear with a viral infection, thicker & white, yellow or green with a bacterial infection)
Crusting of the eyelid

What to do next?

If you are noticing the symptoms of an eye infection, please come to see a doctor as soon as possible. Early treatment can prevent the infection from worsening or being spread to others. Give us a call to book during office hours, or use our online booking system.

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020 7101 0355
City of London, EC3