Red or bloodshot eyes are the result of blood vessel swelling that can be brought on by a wide variety of factors and conditions. For example, things as innocuous as dry air can cause redness in the whites of the eyes.Continue Reading
Most of the time, reddened, bloodshot eyes are not a sign of any serious illness. According to the National Institutes of Health, relatively harmless normal factors such as dust and allergies can cause the blood vessels in the eye to become dilated, or swollen, leading to increased redness in the whites of the eyes. Red eyes can be the result of something more serious, including an injury to the eye or conditions such as conjunctivitis (pink eye), corneal ulcers or acute glaucoma. In some cases, as with pink eye, the redness is a sign of a contagious illness, and those suffering from this ailment should take care to avoid touching their eyes lest they spread the infection to the other eye or to other people.
Though most of the health problems that cause redness in the whites of the eyes are relatively harmless, this symptom can also occasionally be the sign of something serious. Paying attention to other symptoms will help those with reddened eyes understand the severity of their condition. People who are experiencing symptoms like extreme pain, vision problems, nausea, vomiting or dizziness along with red eyes should contact their doctors. Otherwise, the red eye issues should clear up in a matter of days to weeks.Learn more about Organs
Wrinkled skin is caused by a variety of biological and environmental factors such as aging, UV radiation exposure, smoking and repeated movements of certain muscles. Aging is an unavoidable process in which the fat underneath the skin diminishes and oil production is decreased, making the skin dryer and reducing elasticity.Full Answer >
The whites of a dog's eyes can be red due to a number of conditions, including an inflammation of the cornea, eyelid, conjunctiva, sclera, ciliary body or iris, according to PetMD. Other possible and more severe causes of red eyes are orbital disease, glaucoma, a hemorrhage at the front of the eye or a hemorrhage within the eye.Full Answer >
The pulmonary artery is a blood vessel that carries blood that is lacking oxygen and rich in carbon dioxide from the right ventricle of the heart. The pulmonary artery branches into left and right pulmonary arteries and carries the blood to the lungs.Full Answer >
Red and itchy eyelids result from a variety of causes, the most common of which include allergies and infectious or inflammatory conditions of the eyelids such as blepharitis, chalazion and styes, as Healthgrades explains. Other common causes include lack of sleep, the common cold and conjunctivitis.Full Answer >