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Red veins in eyes causes
Red eyes are not always easy to deal with. You can see from the following list that the causes of red veins in eyes can be extensive:
Dry eyes – this can lead to irritation of the eye. Chronic dry eye or Sjogren’s syndrome, which is an autoimmune disease, can lead to severe dry eyes.
Sun and dust particles – exposure to either can cause redness, especially when the person starts to rub their eyes.
Foreign objects – when a foreign object gets into the eye, it has the potential to cut the eye, creating redness.
Allergic reactions – substances like dander, pollen, mold, and dust lead to allergic reactions for some people.
Trauma – this can be caused by too much straining or even coughing.
Subconjunctival hemorrhage – this is when small blood vessels burst. Unfortunately, it can look rather severe for some people.
Blepharitis – this happens when eyelash follicles in the eyelids become inflamed. It can cause infection. People who suffer from blepharitis also tend to experience itchiness, burning, flaking, and crusting in and around the eye area.
Conjunctivitis – also known as pink eye, this is an eye infection of the membrane lining the eyelid as well as the part that coats the surface of the eye. Conjunctivitis is highly contagious.
Corneal ulcers – this is caused by a viral or bacterial infection. Viral corneal ulcers are common in people who get cold sores. Bacterial corneal ulcers are usually seen in those who wear contact lenses. People with these ulcers often feel as if they have something in their eye.
Uveitis – this happens when the uvea, iris, choroid, and ciliary body become inflamed. It can lead to reduced vision or blindness.
Glaucoma – a sudden increase in pressure in the eyes that can lead to severe pain and vision loss. It is a condition that can be hereditary.
Scratches – due to extensive use of contact lenses
Bleeding – as a result of too much blood thinning medications, such as heparin or warfarin.
CRVO – central retinal vein occlusion is blockage of a vein that leaks fluid into the retina. The macula can swell from the leaking of this fluid and impact central vision.
Graves disease – an autoimmune disease that impacts the thyroid and can lead to red veins in eyes.
Iritis – this is inflammation of the iris, which is the colored part of the eye. People with this condition tend to be sensitive to light and can experience headaches.
There are other causes of red veins in your eyes. For instance, smoking can lead to red eyes. Studies have demonstrated that tobacco smoke increases the risk of age-related macular degeneration, cataracts, and uveitis. Additionally, smoke can be a real irritant to eyes, causing dryness, itchiness, and redness. Smoking marijuana is known to cause eye redness. The main psychoactive ingredient in marijuana, THC, can cause blood vessels to dilate, producing eye redness that can last several hours.
Red eyes can also occur because of excessive alcohol consumption. This is because alcohol reduces oxygen to our red blood cells, which causes blood vessels to clump together, giving them a red, bloodshot look.