"Red eye" typically refers to the appearance of red or bloodshot eyes due to the dilation of blood vessels on the surface of the eye's sclera (the white part of the eye).
It can be caused by various factors, ranging from minor irritations to more serious medical conditions. Here are some types of red eyes:
Conjunctivitis (Pink Eye): Inflammation of the conjunctiva, often due to viral or bacterial infection, leading to redness and irritation
Viral conjunctivitis: Often starts in one eye and spreads to the other, causing redness, itching, and excessive tearing.
Bacterial conjunctivitis: Typically affects both eyes and can cause a yellow-green discharge along with redness and irritation.
Allergic Conjunctivitis:
Triggered by allergens such as pollen, dust mites, or pet dander. Eyes may appear red, watery, and itchy.
Dry Eye Syndrome:
Insufficient tears or poor tear quality can lead to dry, red, and irritated eyes.
Subconjunctival Hemorrhage:
Occurs when a blood vessel in the eye's conjunctiva (the clear membrane covering the white part of the eye) breaks, resulting in a bright red patch in the eye.
Corneal Abrasions or Ulcers:
Injuries to the cornea (the transparent front part of the eye) can cause redness, pain, and sensitivity to light.
Contact Lens Issues:
Improper use or allergic reactions to contact lenses can lead to red, irritated eyes.
Glaucoma:
Increased pressure within the eye can cause redness, pain, and sometimes vision loss.
Fatigue or Eye Strain:
Prolonged use of digital devices or reading in poor lighting conditions can strain the eyes and cause redness.
The treatment for red eye depends on its underlying cause. Mild cases caused by fatigue or environmental factors may resolve on their own or with simple home remedies like eye drops. However, persistent or severe redness, especially if accompanied by pain, discharge, or changes in vision, it's important to seek medical attention promptly to determine the underlying cause and receive appropriate treatment.