Is conjunctivitis contagious?

Written by Peng Xi Feng
Ophthalmology
Updated on January 16, 2025
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Hyperacute bacterial conjunctivitis has a short incubation period and progresses rapidly. It can be transmitted through genital-eye contact. Acute or subacute bacterial conjunctivitis, commonly known as pink eye, is highly contagious, prevalent in the spring and autumn, and is generally spread through contact with items used by an infected person. Therefore, it is essential to take preventive measures.

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Written by Peng Xi Feng
Ophthalmology
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Acute conjunctivitis symptoms

Acute conjunctivitis, also known as pink eye, is highly contagious and frequently occurs during the spring and autumn seasons. The onset of the disease is sudden with an incubation period of one to three days. The disease can affect both eyes either simultaneously or one to two days apart. The inflammation is most severe three to four days after onset and then gradually subsides. The duration of the disease is generally less than three weeks. The main clinical symptoms include a foreign body sensation, burning, itching, photophobia, tearing, and increased discharge.

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What to do if conjunctivitis is accompanied by a fever?

Conjunctivitis, also referred to as acute or subacute conjunctivitis, commonly known as "pink eye," is caused by bacterial or viral infections, which can also lead to fever. It is a relatively common disease. It is important to rest, drink plenty of water, avoid staying up late, and consume a light diet with less oily food. Individual usage of washbasins and towels is recommended to prevent contagion. Treatment involves the use of anti-inflammatory and antiviral eye drops under medical supervision, typically resulting in recovery within about a week.

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Written by Peng Xi Feng
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Can conjunctivitis be contagious?

Hyperacute bacterial conjunctivitis, acute or subacute bacterial conjunctivitis is highly contagious and requires isolation to prevent spread and epidemics. When one eye is infected, measures should be taken to prevent infection of the other eye. Strict attention should be paid to personal and communal hygiene, advocating frequent hand and face washing, and avoiding wiping eyes with hands or sleeves. Strict disinfection of face washing utensils, towels, and medical instruments used by the patient is also necessary.

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Written by Zheng Xin
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What to do with acute conjunctivitis?

Acute conjunctivitis is the acute inflammatory response of the conjunctiva, primarily caused by bacterial infection. The main treatment is the local use of antibacterials, such as tobramycin eye drops, ofloxacin eye drops, or chloramphenicol eye drops. Simultaneously with antibacterial treatment, it is necessary to practice frequent hand washing, avoid rubbing the eyes, wash the face with running water, and keep items like towels and handkerchiefs separate from others and frequently disinfected. During acute conjunctivitis, it is important to avoid contact with others, as it can be contagious through contact.

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Written by Peng Xi Feng
Ophthalmology
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Does conjunctivitis require an IV drip?

Conjunctivitis generally does not require intravenous treatment; it is mainly treated according to the cause, with local administration of medication being the primary approach. Systemic medication may be required when necessary. Eye drops are the most basic method of administering medication for conjunctivitis. Eye ointment can also be applied to the eyes; since it remains in the conjunctival sac for a longer duration, it is advisable to use it before bedtime. When there is a lot of secretion in the conjunctival sac, a non-irritating rinse solution can be used to wash the conjunctival sac. In severe cases of conjunctivitis, such as gonococcal conjunctivitis and chlamydial conjunctivitis, systemic antibiotics or sulfa drugs are needed in addition to local treatment.