How do you prevent corneal stenosis?

Corneal stenosis is a disorder of the eyes characterized by damage or erosion to the outermost layer of cells of the eye. The condition is excruciatingly painful because the loss of these cells results in the exposure of sensitive corneal nerves. Corneal stenosis can occur in medical patients that are in a coma or other prolonged sleep state as the cornea tends to dry out the longer the eyelids are closed. Prevention of this condition includes ensuring that the air is humidified rather than dry, maintaining general hydration levels with adequate fluid intake, applying long-lasting eye ointments before starting the sleep cycle, and applying artificial tear drops under the inner corner of the eyelids before opening eyes upon waking.