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.
Trachoma is a disease of the eye caused by infection with the bacterium Chlamydia trachomatis. It is known to be a public health problem in 42 countries, and is responsible for the blindness or visual impairment of about 1.9 million people.