What are the main causes of bloodshot eyes?

Sep 13, 2022 Source: Cainiu Health
Dr. Jiang Weimin
Introduction
Bloodshot eyes are a very common clinical phenomenon, arising from both physiological and lifestyle-related causes. Beneath the conjunctiva of the human eye lie numerous tiny capillaries, so even healthy individuals may have visibly red blood vessels in their eyes, varying only in severity. The main physiological causes of red lines in the eyes include poor lifestyle habits, such as staying up late for work or having an unhealthy diet.

In daily life, for unknown reasons, some people develop red blood vessels in their eyes, affecting both their health and everyday activities. So, what are the main causes of bloodshot eyes?

What Are the Main Causes of Bloodshot Eyes?

Bloodshot eyes are a very common clinical phenomenon, arising from both physiological and pathological factors. Beneath the conjunctiva of the eye lie numerous tiny capillaries, so even healthy individuals normally have visible red blood vessels in their eyes—only varying in degree. The primary physiological causes of redness in the eyes are poor lifestyle habits. For example, staying up late working overtime, excessive eye strain, or unhealthy dietary habits such as frequent consumption of stimulants like tobacco, alcohol, and spicy foods can worsen eye redness. These cases usually don't require special treatment but can improve by adjusting one's lifestyle and diet. The most common pathological causes of bloodshot eyes are conjunctivitis or keratitis (inflammation of the conjunctiva or cornea), which result in conjunctival congestion.

If red lines appear in the eye, clinically patients may present symptoms of conjunctival congestion. Generally, conjunctivitis is mainly caused by bacteria, viruses, or even allergens leading to allergic conjunctivitis. Therefore, after identifying the underlying cause, bacterial conjunctivitis should be treated with antibiotic eye drops, viral conjunctivitis with antiviral eye drops, and allergic conjunctivitis by avoiding contact with the allergen and using anti-allergy eye drops for symptomatic relief.

In daily life, it's important to manage work-related stress and find ways to relieve pressure when overwhelmed. After prolonged use of electronic devices, close your eyes to rest or look into the distance to relax your eyes. This helps prevent eye conditions that could negatively impact your health and daily routine. We hope this information has been helpful. Wishing you good health and a happy life!

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