Causes and treatments for blood shot eyes
Red eyes occur when the blood vessels on the surface of the eye become irritated. The irritation causes the blood vessels to swell and dilate.
Even though they are often not painful it is best to treat blood shot eyes promptly in case they are a sign of a more serious condition.
Conjunctivitis is a common cause of bloodshot eyes. As it is very contagious it’s best to avoid sharing towels and pillows. You may also want to avoid eye makeup and contact lenses until the redness has gone. Visit the chemist to grab some over the counter medication, or see a doctor if the symptoms don’t clear up.
Eye injury can cause redness. A scratch in or near the eye, or something stuck in your eye can cause redness as the eye tries to protect itself. If the redness doesn’t go away and you are concerned it is best to see a doctor who can use their tools to look into the eye and treat any issues.
Dry eye syndrome is a condition where the tear glands don’t produce enough tears to keep your eyes lubricated. You can buy artificial tears from the chemist that can help alleviate the symptoms.
Allergies can cause redness, as the body is trying to fight off what it perceives as a threat. Causes include allergens such as animals, dust, pollen, or perfume. Try avoiding the allergens if you can, or you can take an antihistamine or apply some eye drops from the chemist.
Cigarette smoke can cause eye redness as it causes the eye to become dry and irritated. If this is an issue for you it’s best to avoid being around smokers if possible, and to reduce your intake if you are a smoker. Speak to your doctor if you need help to cut down.
Excessive alcohol consumption can cause red eyes too. The alcohol can reduce oxygen supply to your red blood cells, which causes the blood vessels in your eyes to become irritated. If your bloodshot eyes are due to alcohol it is best to reduce your intake. Again, talk to your doctor if you need help or advice.
Contact lenses can cause redness as irritants can build up on the surface of the lens. Be sure to follow the directions on the pack in terms of how long you can wear or keep your lenses. If redness or irritation occurs, try taking the lenses out to give your eyes a break.
Other one off factors for bloodshot eyes can include having a cold or a flu, swimming in a chlorinated pool, severe coughing, vomiting, a lack of sleep, or using a computer screen without taking regular breaks.
These are normally easily attributed to a specific event, and generally clear up within a day or two without much trouble.
Please note, if bloodshot eyes are accompanied by other symptoms such as pain, serious discomfort or headaches you would be best to consult your doctor or optometrist immediately.
This could be a sign of something more serious such as glaucoma, a corneal ulcer, or a scratch to the eye which may need immediate treatment.