Question

Which of the following is TRUE about artificial tears?

A) The higher the demulcent concentration, the higher the viscosity
B) They contain the same biologically active components of natural tears
C) They increase tear film evaporation and supplement natural tear production
D) They have no effect on ocular surface stress or optical surface quality

Answer 1

The higher the demulcent concentration, the higher the viscosity.

Step-by-step explanation:

The correct statement about artificial tears is:

A) The higher the demulcent concentration, the higher the viscosity

Artificial tears are used to lubricate the eyes and relieve dryness and irritation. They usually contain a demulcent, which is a substance that adds viscosity to the tears. The higher the concentration of demulcent in the artificial tears, the thicker the tears become and the higher the viscosity. This helps to provide longer-lasting relief and improve eye comfort.