What Causes Dry Eyes?

An increasing number of tear evaporation

An increasing number of tear evaporation
An increasing number of tear evaporation

The oil film forms by the small glands on the corner of the eyelids (known as meibomian glands) might be a blockage. The blockage of meibomian glands is the most occurring in people having Rosacea or some other disorders of the skin. The most common cause of the increasing number of tear evaporation consists of:

  • Eye allergies
  • Posterior blepharitis (a disorder of the meibomian gland)
  • Vitamin A deficiency
  • Eyelid problems include the lids turning inwards (known as entropion) and the lids turning outward (ectropion)
  • Preservatives in typical eyedrops
  • Dry air, smoke, or wind
  • Blinking less sometimes tends to happen with some situations such as Parkinson’s disease; or when you are focusing during some activities include while driving, reading, or working on a laptop or computer device
  • Sometimes the balance is deficient in the system of teat-flow. Or your heater, conditioner, or some other things surrounding you could let them dry out the tear film.
  • Other reasons such as; the natural process of aging, specifical menopause
  • The side effects of some medications such as antihistamines
  • Diseases that might affect the ability to form tears such as rheumatoid arthritis, Sjogren’s syndrome, and collagen vascular disease
  • Difficulties that do not let your eyelids shut them the way they should

Dry eyes might become irritated and red. The eyes make tears all the time, not only when you are experiencing emotion or yawn. Healthy eyes are continuously covered with a liquid, called a tear film. It is forming to stay stable with each blink. This stops the eyes from getting dry and makes clear vision. If the tear gland forms fewer tears, then the tear film might become non-stable. It might disintegrate quickly, making dry spots on the eye surface. Tears are forming up of proteins, water, electrolytes, fatty oils substance to fight against the bacteria and the factors of growth. The mixture aids in keeping the eye surface clear and smooth so that you can see efficiently.  Dry eyes might result from:

  • Insufficient production of tear mixture, so that it evaporates too quickly
  • Not enough tear production for the good health of an eye