Blindness Essay -- essays research papers fc

The term sightlessness implies total orpartial loss of vision involving both eyes. The exactlevel of vision defined as blindness, however,varies in different countries because of differinglegal or social requirements. In the United States,blindness is defined as unimprovable vision of20/ two hundred (6/60) or worse. This room that an respective(prenominal) is generally considered blind who, evenwith the use of ordinary eyeglasses, can see nobetter at 20 ft (6 m) than a someone with prescriptvision can see at 200 ft (60 m). On the other hand,the World Health Organization (WHO) ProgramAdvisory conference on the Prevention of Blindnesslists the vision level suggested as blindness as avisual acuity of less than 10/200 (3/60), which isdouble as low as the U.S. definition. The WHOlevel of visual acuity is also described as theinability to count fingers in daylight at a maintain of10 ft (3 m), because in many regions a greatnumber of people cannot receive formal eyeexaminations but m ay be time-tested by unspecializedpersonnel. From data available in the mid-1980s,the number of persons worldwide who have avisual acuity of less than 10/200 is estimated as 28million. This level of handicap precludes anindividual from functioning effectively in thecommunity without special assistance andrehabilitation (see BLIND, EDUCATION OFTHE). Were the definition of blindness kindataken as 20/200, as is done in a number ofindustrialized countries besides the United States,t... Blindness Essay -- essays look for papers fc The term blindness implies total orpartial loss of vision involving both eyes. The exactlevel of vision defined as blindness, however,varies in different countries because of differinglegal or social requirements. In the United States,blindness is defined as unimprovable vision of20/200 (6/60) or worse. This means that anindividual is generally considered blind who, evenwith the use of ordinary eyeglasses, can see nobetter at 20 ft (6 m) tha n a person with normalvision can see at 200 ft (60 m). On the other hand,the World Health Organization (WHO) ProgramAdvisory Group on the Prevention of Blindnesslists the vision level suggested as blindness as avisual acuity of less than 10/200 (3/60), which istwice as low as the U.S. definition. The WHOlevel of visual acuity is also described as theinability to count fingers in daylight at a distance of10 ft (3 m), because in many regions a greatnumber of people cannot receive formal eyeexaminations but may be tested by unspecializedpersonnel. From data available in the mid-1980s,the number of persons worldwide who have avisual acuity of less than 10/200 is estimated as 28million. This level of handicap precludes anindividual from functioning effectively in thecommunity without special assistance andrehabilitation (see BLIND, EDUCATION OFTHE). Were the definition of blindness insteadtaken as 20/200, as is done in a number ofindustrialized countries besides the United States,t...