Conjunctivitis - Red Eye

Red eye is not a distinct ailment but can occur due to a diverse range of eye conditions.

Red eye, conjunctivitis, bloodshot eye, sclera injection, or pink eye are all terms used to refer to side effects of various external conditions that the eye may be subjected to.


Conjunctivitis can be a bacterial or viral disease and can also be caused by pain, discharge, allergies, and inflammation. Red eye occurs when inflammation in some part of the eye extends into the surrounding capillaries. These hair-thin vessels become more visible once they are swollen, giving the eye a red or pink color depending on the severity and location of the inflammation.

Diseases of the iris, cornea, and other parts of the eye may also lead to red eye.


  • Food allergies
  • Itching
  • Abnormal immune system
  • Invisible microscopic particles


1. Avoid Allergens

Identifying allergens and avoiding them could be a first line of treatment for red eye. Artificial tear drops such as Refresh Endura, Systane, or Theratears and Patanol (a combination of a mast cell stabilizer and an antihistamine) are still the most common medications used for ocular allergy treatments.

2. Antibiotics

The life cycle of red eyes is limited and may take a few weeks to clear. Antibiotics can be used to speed up the process.