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 one of the main causes of blindness in the world. It is a disease most commonly encountered in hot regions of the globe where hygienic conditions are poor. Treatment includes a course of tetracycline or erythromycin and surgical correction of entropion and trichiasis may be necessary.rachoma is caused by C. trachomatis, a parasitic organism closely related to bacteria. It is transmitted by insects, by hand-to-eye contact, or by the sharing of infected handkerchiefs or towels. The incubation period is about a week.