The term hardware refers to the physical components that make up a computer. These components may be mechanical, electrical, electronic or magnetic. The term may also be used to....
Causes and symptoms. The early symptoms of trachoma include the development of follicles (small sacs) on the conjunctivae of the upper eyelids; pain ; swollen eyelids; discharge; tearing; and sensitivity to light.
But the disease progresses slowly, and the more painful symptoms may not emerge until adulthood. The World Health Organization has identified five stages in the development of trachoma: Inflammation â follicular. The infection is just beginning in this stage.