What Causes Red Eyes? – Reasons For Red Eyes


reasons for red eyesEyes are mirrors for our emotions, so we must take care of those. Due to various reasons eyes are getting many diseases. Here red eyes or bloodshot eyes are one of the main things.

There are several reasons for this effect, such as Ophthalmia, Dry eyes, Allergy, Contact lens, Computer vision syndrome, Cosmetic Eyelid surgery, Glaucoma and more.

Let’s have a look at how these are affecting eyes.

Ophthalmia :

In some cases due to a lineal eye injury, Sympathetic Ophthalmia can develop. This can present itself as a Uveitis, it will happen when the resistant power of our body attacks the damaged eye first and then effects healthy one.

This Sympathetic Ophthalmia (SO) will happen very rarely, it can occur 0.2 to 0.5% of non-surgical eyes wounds and less than 0.01% of surgical eye wounds.

In this condition we didn’t feel any pain, however, the eyes will experience blurred vision and the eyes loses its capability of focus. 80 percent of cases this SO will occur within three months of injury and 90 percent cases it will occur within one year of the time period.

Symptoms :

Ensuingly the symptoms growth to include:

> Heavy eye pain and redness in both eyes

> High sensitivity of light (known as Photophobia)

> Eyespots in the optical field

> Weak and pale eyes

>  Visual damage, and finally leads to blindness

When we went for a slit-lamp checkup, the doctor may observe the cluster of provocative cells on the posterior corneal surface. If the sight increased in injured eye, then removal of complete injured eyeball will take place. If the sight of the injured continues, or either if the medical action unable to prevent autoimmune response, then the usage of the drug called corticosteroid may be used to control the intervention and immunosuppressive will take place. In this, it may also use the T-cell drugs such as Cyclosporine, which is partially concealed immune system activity.

Dry Eyes:

The main reason for dry eyes is lack of oily or slippery substance (known as Lubricant) and moisture on the surface of the eye. The effect of dry eyes ranges from delicate, however it makes constant eye irritation and critical inflammation.

The alternative medical terms to describe dry eyes are as :

Keratitis: Which is generally used to describe the dryness and inflammation of the cornea i.e., a transparent layer forming the front of the eye.

Keratoconjunctivitis sicca: Which is used to describe the effects of dry eye on both cornea as well as conjunctiva.

Dysfunctional tear syndrome: Used to assert lacking quality of tears.

The ubiquity of Dry Eyes :

Nowadays dry eyes is a very common disease, According to recent online poll half of the percentage (48%) of Americans aged 18 or old are most affected by this dry eye disease. Around 26 millions of Americans were suffering from this dry eye effect, this number is expected to increase 29 percent in 10 years. In consideration of another survey, it shows the people aged 50 and above are clinically compelling dry eye syndrome

Dry Eye Symptoms:

We can find different symptoms in Dry Eye effect,

  • Burning Eyes
  • Sore Eyes
  • Itchy Eyes
  • Dryness sensation
  • Blurred Vision
  • Light sensitivity
  • Heavy Eyes

Causes of Dry Eye Syndrome:

The healthy eyes can have a sufficient and consistent layer of tears on the eye surface. Tears will help to clean the eye surface and keep it moisture and non-dust. Microorganisms can make damage to the cornea (front surface of eyes) and leads to the eye infection.

The tear films consist of some different layers,

  • Lipid component (Oily)
  • Aqueous Component (Watery)
  • Mucin Component

This each individual component has different purposes, such as the lipids will help to make smooth eye eyes by stopping the evaporation of tears and mucin will help to spread the tears to complete surface of eyes. These each individual tear components can be produced by different organs on the eye.

In some cases the other reason for dry eyes is the failure of produce enough aqueous (watery fluid), to keep eyes moisture which is known as “aqueous deficiency dry eyes”.

The different kind of dry eye disease has different kinds of treatments suggested by the doctors.


Eye Allergy- it may be happened due to dust, smoke or other pollution. The allergy eyes may lead to red eyes, dry eyes and also conjunctivitis. According to one American survey, it describes that these allergy effects were noticed in  30 percent of adults and 40 percent children.

These allergy eyes have the symptoms such as the snoozy nose, watery eyes, red eyes and runny nose. There are some other causes we may find for eye allergies areas due to the usage of cosmetics or due to eye drops and also because of artificial tears. In some cases, it will happen by the reaction of the food which we are taking.

Relief from Eye Allergy:

We can get relief from these allergy eyes by approaching some remedies:

The main approach to get relief from eye allergy is that you have to control the symptoms by doing everything you can limit the common allergens which make you sensitive to.

For example, if there is high pollution outside it’s better to stay in to protect your eyes from all the dust particles or either use the sunglasses while moving out to avoid UV radiation effect on eyes. And also it’s important to reduce the usage of cosmetics on eyes if it won’t possible you just clean up your eyes carefully after using the cosmetics. One more important source which is affecting the eyes is contact lenses. Contact lenses may attract the dust particles easily by this we can experience the itching sensation in eyes. By robbing eyes also we can get the allergies in eyes.

In the market we can get the number of branded non-prescription eye drops, however, these will help to reduce the itchiness, redness in eyes.

In general, there are some more reasons for these red eyes are as too much consumption of alcohol, due to lesser sleep, cold and flu, environment and workplace hazards, smoking, swimming and more.

It’s better to consult your eye doctor if you felt red eyes symptoms as swelling, blurred vision, itching sensation and light sensitivity.

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