Details of chemotherapeutic and chemoprophylactic trials with systemic organic
phosphorus compounds on specific oculo-vascular myiasis under field conditions are
given. The results proved encouraging and showed that Dow-ET-57, Ruelene and
Neguvon, in this order of efficacy, have definite larvicidal actions against the causal
Gedoelstia larvae. The mortality as well as the incidence of blindness were reduced
notably by all three insecticides.