What causes red bloodshot eyes all the time?

May 30, 2024 Source: Cainiu Health

Dr. Wang Shuai

Introduction

Redness in the eyes may be caused by eye strain, environmental irritation, dry eye syndrome, viral conjunctivitis, or iridocyclitis. To prevent redness, it is important to practice proper eye usage, maintain good eye hygiene, keep indoor humidity at appropriate levels, observe personal hygiene, and avoid viral infections that could lead to eye conditions such as conjunctivitis.

Under normal circumstances, persistent redness in the eyes may be caused by eye strain, environmental irritation, dry eye syndrome, viral conjunctivitis, or iridocyclitis. Seek medical attention promptly if discomfort occurs. Specific causes are analyzed as follows:

1. Eye Strain

Prolonged work or study, especially under insufficient or unstable lighting, can lead to eye strain. The eyes remain congested for extended periods, resulting in persistent redness, possibly accompanied by symptoms such as soreness and tearing. It is important to rest the eyes regularly and avoid prolonged visual tasks.

2. Environmental Irritation

Irritants such as smoke, dust, sand, or small insects entering the eye can stimulate ocular tissues, causing blood vessels to dilate and leading to redness. This may also cause eye pain and tearing. Usually, no medication is required. Clean cotton swabs can be used to remove foreign objects, followed by closing the eyes to rest and avoiding further irritation.

3. Dry Eye Syndrome

Dry eye syndrome occurs due to insufficient tear production or excessive evaporation, leading to dryness and congestion of the conjunctiva, which manifests as redness. Common accompanying symptoms include dryness and discomfort. Treatment may include sodium hyaluronate eye drops, polyvinyl alcohol eye drops, or hypersaccharide eye drops, as prescribed by a doctor.

4. Viral Conjunctivitis

This is an inflammation of the conjunctiva on the eye's surface caused by a virus. Inflammation leads to dilation of conjunctival blood vessels, resulting in redness, along with symptoms such as pain and increased discharge. Treatment may include antiviral and anti-inflammatory eye drops such as acyclovir eye drops, tobramycin eye drops, or bromfenac sodium eye drops, used under medical guidance.

5. Iridocyclitis

Iridocyclitis is an inflammation of the iris and ciliary body inside the eye, possibly related to immune system abnormalities. Inflammation causes congestion of these structures, leading to persistent eye redness, often accompanied by pain, decreased vision, and photophobia. Treatment may include oral prednisone acetate, fluorometholone eye drops, or pranoprofen eye drops, as directed by a physician.

In daily life, it is important to use eyes reasonably, maintain good eye hygiene, keep indoor humidity at appropriate levels, practice personal hygiene, and avoid infections that could lead to eye conditions such as conjunctivitis.

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What should I do if I have a severe cold, my eyes are open but I'm dreaming as if asleep?

When suffering from a severe cold, one may experience sleepiness with eyes open and frequent dreams. This can be improved by targeted management of the cold, enhancing the sleep environment, regulating physical condition, relieving discomfort symptoms, and avoiding interfering factors. If symptoms such as persistent high fever, difficulty breathing, or confusion occur, seek immediate medical attention. Take anti-cold medications as prescribed to suppress viral infection and reduce respiratory inflammation.