onjunctivitis is an inflammation or infection of the conjunctiva. Sometime is called red eye or pink eye which the white eye has red more than usual or the eye has the red eye more than the other side. It may be caused by a viral
or bacterial infection. It can also occur due to an allergic reaction to irritation the air like pollen and smoke, chlorine in swimming pools ,and ingredients in cosmetics or other products that come in the contact with the eyes. In this papers, we are interested in Conjunctivitis caused by virus or know as A cute Hemorrhagic Conjunctivitis (AHC). It occurs
in the eye that found frequently in Thailand especially during the rainy season because of the rain caused wetness and the virus is easily developed. Acute Hemorrhagic Conjunctivitis is simple and fast contact. This disease is caused by virus in Adenovirus group and Enterovirus group. Transmission occurs from person to person contract or contract with contaminated objects by tears of patients attached with fingers and transmit from finger to eye directly.The incubation period for each susceptible individual infect the virus is 1 - 2 days. The period of infection is about 14 days(Atchaneeyasakul, K. and V. Wiwanitkit, 2014; Bureau of Epidemiology, 1997-2011; Chowell, G.,2005)