What Causes Bloodshot Eyes, On One Side, Meaning, Red Veins in Eyes, No Pain, Sudden Bloodshot Eyes, How to Get Rid and How to Treat

A detailed outlook of what causes bloodshot eyes, causes, on one side, meaning, red veins in eyes, no pain, sudden bloodshot eyes, how to get rid and how to treat

Bloodshot Eye on One Side

Eye redness appears in a certain part of an eye, like the corner of an eye, or even throughout the white of an eye. Though a patch of redness might indicate a localized effect of a condition, a similar condition might lead to widespread redness on an eye.

If redness does accompanies other symptoms like irritation or even changes in vision, then a person should contact an eye doctor so as to determine the disorder that is leading to the symptoms.


Most of the people have allergic responses to the pollens or several other seasonal triggers, and some people struggle much with allergic reactions to allergens. These reactions might lead to sinus reactions, like sneezing or even congestion, but the eyes can react also, says The University of Michigan Eye Center.

what causes bloodshot eyes

Bloodshot Eyes

Redness usually appears, across the entire white of an eye. Itching and surface discomfort can happen well. Over-the-counter allergy eye drops assists to relieve eye redness and several other symptoms, though, some of the people might require a prescription allergy eye drop. Oral allergy medications can relieve redness and irritation, preventing recurring symptoms.


Eye infections, like conjunctivitis, normally lead to redness in eyes. In most of the cases, significant inflammation leads to redness through the entire white of an eye, the reason making people refer to the condition as “pink eye.” Other symptoms include itching, discomfort as well as discharge, say doctors. For many people, the symptoms can gradually improve over days.

However, some people might be required to use prescription eye drops to help in resolution of the infection. A person should thus contact an eye doctor if symptoms worsen instead of improving, or if vision as well as comfort decreases.

Subconjunctival Hemorrhage

A broken blood vessel on white of an eye will lead to localized redness, which happens in the corner of the eye or any location. The broken blood vessel, known as a subconjunctival hemorrhage, does not typically lead to pain, irritation or even changes in vision.

The hemorrhage usually happens after sneezing or even coughing, though some people do not relate a cause to appearance of broken blood vessel. The hemorrhage, which acts like any bruise on skin, heals over time and should not worsen. However, if red spot on eye appears to bulge out or bleeds into colored part, you should seek medical attention.

What Causes Bloodshot Eyes? Bloodshot Eyes Meaning

Red eye” is a non-specific term which describes the appearance of eye. It can happens in one or even both eyes. Red eye might be because of an illness, eye infections, or several other condition like allergies.

Doctors do not tend to take immediate action when a patient comes in with red eyes. It is a common condition which is usually brought about by something else like fatigue, allergies, or flu. Red eyes are also known as bloodshot eyes, pink eye, or allergy eyes.

Red Veins in Eyes

You may ask yourself, what causes bloodshot eyes? Main cause of appearance of red veins in the white portion of eye is irritation, dilation, as well as swelling of blood vessels within. This irritation are brought about by several factors including the following.

  • Dry air can lead to irritation of eyes which normally leads to prominent red veins in eyes.
  • Too much exposure to sun and also dust particles.
  • Foreign body which damages or cut the eyes.
  • Trauma that can be brought about by straining or coughing.
  • Subconjunctival hemorrhage or red eye.
  • Blepharitis. This happens when the eyelash follicles in eyelids are inflamed. The cause of the condition is a skin bacterium.

What causes bloodshot eyes? Other than from having red veins in eyes, it can also lead to crusty eyelids, sensitivity to light, dry eyes and also blurred vision.

  • Pink eye. This is an infection of membrane lining of eyelid and the part which coats the surface of the eye. It is a contagious condition brought about by a virus, allergy, and some products which lead to irritation.
  • Corneal ulcers. This is brought about by a viral or even bacterial infection and appears on eye’s outer covering.
  • Uveitis. This happens when the uvea, iris and the ciliary body are inflamed and is associated as an autoimmune disorder which is contributed by infection as well as toxin exposure.
  • Acute glaucoma. This is a sudden increase in amount of pressure that is brought to eyes which may be severely painful and can cause vision problems.
  • Scratches in cornea brought about by extensive use of the contact lenses.
  • Bleeding problems that is brought about by several medications for blood thinning.
  • Central retinal vein occlusion.
  • Grave’s disease can also lead to prominent red veins in eyes.
what causes bloodshot eyes

Bloodshot Eyes

How To Treat Red Veins In Eyes That Won’t Go Away?

Here are some treatment options that is used for red veins in eyes,

  • When eyestrain or stress has been leading to the condition, you should rest.
  • A patient with conjunctivitis is supposed to avoid touching his eyes and wearing contact lenses. Apply some warm compress for the bacterial conjunctivitis. As for the allergic conjunctivitis, apply some cold compress many times a day. Keep the hands clean so as to avoid the spread of the infection.
  • For patients affected by the condition of blepharitis, apply warm compress to eyes at least twice a day for at least 10 minutes. Keep the eyelids clean to relieve blepharitis symptoms.
  • Homeopathic remedy plassiflora is said to be beneficial for several eye conditions which includes conjunctivitis and eyestrain.
  • When red veins are accompanied by several other symptoms like pain, loss of vision, cornea that becomes cloudy, and the pupil size becoming unequal, you should visit doctor. Specialized eye drops will be provided. For severe cases, surgery might be recommended.

What Causes Bloodshot Eyes? One Bloodshot Eye No Pain

What causes bloodshot eyes? Subconjunctival hemorrhage is the bleeding which emanates from a superficial vessel. Most of the cases are spontaneous, having a higher incidence amongst patients who take other anti-coagulants. This condition can also be du to Valsalva maneuvers, like forceful coughing or straining.

Trauma is also said to be a common cause of this finding. Several patients do not complain of any associated symptoms. They also do not notice the condition until they look in the mirror. Examination has revealed that blood under the conjunctiva which is usually limited to one sector of eye.

Blood pressure is also supposed to be checked as there is a very close association with hypertension. A work-up for abnormal coagulation is required if the patient have recurrent episodes and has evidence of poor clotting elsewhere through physical examination.

If the patient has trauma with a sharp object, they are supposed to be referred for a thorough ophthalmic examination so as to rule out an occult rupture of globe which might be hidden by blood. In general, no treatment is needed and the patient should be reassured that the hemorrhage will clear in about two weeks.

Sudden Bloodshot

This happens to a lot of people several times.

Your eyes get red when the tiny blood vessels on surface of the eyes expand and turn the whites of one or both eyes a reddish tint. Many things can lead to the condition, such as a physical injury to your eye. But if you haven’t had too much alcohol, or even scratched your eyeball recently, there are other several possibilities.

Could It Be Allergies?

So, what causes bloodshot eyes? Allergy triggers can also make your eyes to appear red in color. Outdoor leads to include pollen from grasses and trees. Indoor triggers include dust or irritants such as perfume and smoke. In these particular cases, your eyes might also have:

  • Itching
  • Tearing


Could It Be Dry Eye?

Sometimes, the tears which your eyes make are not the correct consistency and evaporate fast. And sometimes the eye can’t make tears as required. This condition is known as dry eye. It can cause pain, ulcers on cornea, bloodshot eyes in rare instances, some vision loss.

Besides eye redness, you might have some symptoms of dry eye:

  • A gritty feeling
  • A burning sensation
  • Heavy eyelids
  • Eye fatigue
  • A stringy discharge

Could It Be Pinkeye?

What causes bloodshot eyes? This condition is also known as conjunctivitis, pinkeye is happens when the lining inside your eyelid and the white of your eye is inflamed. Causes include a virus, an allergy, or irritants such as swimming pool chlorine. It’s common, especially among the children, and is contagious.

Other symptoms are:

  • More tears than usual
  • Your eyes burn, or feel gritty
  • White or green discharge from your eyes
  • Your eyes are sensitive to light
  • You get a crust on your eyelid or even the eyelashes

How to Get Rid Of Bloodshot Eyes

Short-term solutions for red eyes

The right remedy that can be offered for your red eyes largely depends on specific cause. Generally, one or more of the below can ease the discomfort of red eyes.

Warm compress

Soak a clean towel in warm water and then wring it out gently. The area that is around the eyes is sensitive, so ensure that you keep the temperature at a tolerable level. Place the towel on eyes for a period of about 10 minutes. The heat might also increase blood flow to area. It might also increase oil production on eyelids. This allows your eyes to create lubrication.

Cool compress

If a warm compress isn’t working, then you can take the opposite approach. A towel that is soaked in cool water and wrung out can provide short-term relief for the condition of red eye symptoms. It can relieve any swelling and reduce any itchiness emanating from irritation. Be sure to avoid extremes of temperature in the eye area around your eyes, or you can make the problem to be worse.

Artificial tears

Tears lubricate your eyes and assist to keep them clean. Dryness calls for over-the-counter artificial tears so as to keep your eyes healthy. If artificial tears are recommended, consider refrigeration of the solution.

Long-term solutions for red eyes

If you regularly have red, irritated eyes, you might be required need to think of a solution. Here are a few lifestyle changes which relieves your symptoms. You should ensure that you talk to your doctor if the problem persists.

Switch contacts

If you’re having chronic eye redness and wearing contact lenses, then the problem might involve your eyewear. The materials that are found inside some of the lenses can increase your likelihood for irritation. If you’ve recently switched the lenses — or if you’ve had the same lenses for a while — and have redness, ensure that you talk to your eye doctor. He might assist help you pinpoint the problem.

The contact solution which is used can also affect your eyes. Certain solution ingredients aren’t as compatible with some of the lens materials. Make sure that you’re using the best contact solution for lenses.

Pay attention to your diet

What causes bloodshot eyes? If you aren’t staying hydrated, it can lead to your eyes being bloodshot. Generally, a person requires about 8 cups of water a day so as to maintain a proper fluid balance.

Eating an excessive amount of inflammatory foods can also lead to eye redness. Processed foods, and fast foods can all lead to inflammation if eaten in excess amount. You can then relieve this by limiting the amount or adding inflammation-reducing foods to your diet.

Research has established that foods which are rich in omega-3 fatty acids can greatly reduce inflammation. These are found in fish, like salmon, seeds and nuts, like flaxseed. You may also take supplements that have omega-3s.

Be aware of your surroundings

Your environment can affect your eyes. If you’re surrounded by allergens, like smoke, it can also be at the root of the problem. Dry air and wind can have an effect.

How to Treat Red Eyes

  1. Fennel Seeds

Fennel seeds are said to be a powerhouse of vitamin C and A, which indicated antioxidants which contributes to eye health. Researchers have found that the seeds can assist to decrease eye pressure and enhance blood vessels’ dilation, therefore assisting treat or preventing glaucoma, which is one vision-impairing disease. These seeds have antioxidants which fight inflammation and thus effective to treatment of red eyes. Follow the steps below:


  • ½ tsp of the fennel seeds
  • 1 cup of water


  • First of all, add about ½ teaspoon of the seeds into 1 cup of water.
  • Boil the water and let it cool down. Strain the solution.
  • After that, rinse your eyes with this solution.
  • To cure red eyes, repeat the procedure the way regularly.
  1. Chamomile Wash

Chamomile is a strong anti-inflammatory agent. In addition, the severity of redness and swelling of your eyes can be minimized.


  • 1 tsp of chamomile flowers
  • 1 cup of water


  • Firstly, add about 1 teaspoon of chamomile flowers into 1 cup of water and boil it.
  • Then, strain the solution and let it cool down.
  • Using the solution, wash your eyes so as to get cure from the red eyes allergies.



  1. 24 Tips How to Treat Red Eyes at Home Without Eye Drops: http://vkool.com/how-to-treat-red-eyes/
  2. Ocular Symptoms and Signs: http://www.antimicrobe.org/new/printout/e34printout/e34noDischarge.htm
  3. Why Are My Eyes Red: https://www.webmd.com/eye-health/why-eyes-red#1
  4. Why Eye Redness Happens and How to Treat It: https://www.healthline.com/health/eye-health/how-to-get-rid-of-red-eyes
  5. Have Red, Bloodshot Eyes? Here are The Causes and Treatment Options: https://www.eyehealthweb.com/red-bloodshot-eyes/
  6. What Causes Red Veins In Eyes: Treating Red Veins That Won’t Go Away: http://www.simple-remedies.com/eye-care/red-veins-in-eyes-that-wont-go-away.html
  7. Red eye: https://www.nhs.uk/conditions/red-eye/
  8. Eye Disorders That Cause Redness in the Corner of the Eye: https://www.livestrong.com/article/186868-eye-disorders-that-cause-redness-in-the-corner-of-the-eye/


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