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5 Common Causes Of Red Eyes

Posted Jan-05-2021

We are all familiar with bloodshot eyes. The whites of the eyes are supposed to be clear but sometimes, fine red veins or reddish blotches appear. Naturally, they can be a little worrying. That is why you should learn about the different causes of eye redness so that you know what to do about it.
Causes of red eyes

There are many blood vessels between your conjunctiva and the outer-most white layer of the eyes. Typically, they are not visible to the naked eye. However, sometimes they inflame and become prominent which makes your eyes look red.

Let us first look at the most common causes of reddening of eyes. In most cases, you can blame any of the following:

    Allergens that trigger eye allergy.
    Pollution, dirt and grit that enter the eyes and irritate them.
    Particles in smoke (fire or smoking- both first-hand and second-hand).
    Fumes (exhaust from cars, petrol fumes, solvents etc).
    Exposure to chemicals (at the workplace or chlorine in swimming pools).
    Overexposure to the sun when you are not wearing eye protection like sunglasses.

Usually, a person with red eyes will notice a network of fine but very red vessels along the two corners of their eyes.

But sometimes they may notice a blotch of red. This happens when a blood vessel ruptures, which is called a subconjunctival haemorrhage. It may look serious, but the blotch usually disappears within 7-10 days. Subconjunctival haemorrhage can be caused by:

    Long fits of coughing
    Eyestrain (when you stare at laptop or phone screens for too long or don’t get enough sleep)

Microbial causes of bloodshot eyes

Bacteria or viruses could affect your eyes and cause eye redness.

Some infections that make your eyes go red are:

    Blepharitis- the follicles of your eyelashes get infected and inflamed
    Conjunctivitis- a common eye infection that causes the inflammation of the conjunctiva
    Corneal ulcers
    Uveitis – the uvea becomes inflamed

Infections can make either one or both eyes turn red. Besides, you will also experience:

     Pain
    Watering
    Eye discharge
    Changes in eyesight


A few more causes of eye redness

Usually, irritants or infections cause redness of eyes. However, there are a few more reasons your eyes can become bloodshot:

    An eye injury or trauma
    Glaucoma which increases the pressure of your eyes
    Scleritis- swelling of the white region of your eyes
    Irritants or contact lenses may scratch the cornea to cause redness
    Rheumatoid arthritis
    Taking drugs

Can bloodshot eyes be serious?

Usually, if your eyes are merely bloodshot, you have no reason to worry. However, it is a cause of concern if red eyes are accompanied by:

    A dull ache
    Stinging
    Severe irritation
    Sensitivity to light
    Burning sensation
     Itching
     Dryness
     Discharge
     Severe headache after an eye trauma
     Nausea and throwing up

Be wary if:

These symptoms do not recede in 10 days

You should consult an ophthalmologist because it could be serious and you may require immediate treatment.
Home remedies for eye redness

Eye redness caused by allergies, irritants and infections like conjunctivitis or blepharitis can be treated by simple home remedies:

    Cold compress with a piece of clean cotton cloth or a ball of cotton wool dipped in cold water.
    Anti-histamine medicines- they suppress the production of histamines that cause eye redness.
    Avoid all irritants.

Saline drops- they serve the same purpose as your natural teardrops, your eyes eliminate irritants and germs through them. Apply twice a day.
    Cool tea bags on closed eyes can relieve eye inflammation because tea contains powerful anti-oxidants.
    Warm compress with lukewarm water and a clean cotton cloth.

To determine a suitable home remedy for your red-eye problem, talk a doctor on MediBuddy.
Preventive measures

To prevent bloodshot eyes, you should:

    Wear sunglasses when you go out during the day.
    If your work involves being exposed to chemicals and fumes, wear protective eye gear.
    Wear spectacles to prevent dirt and grit from entering your eyes.
    Anti-blue light lenses can reduce eye strain.
    If you are prone to allergies, wash your pillow covers and bed sheets regularly.