[Immunologic diagnosis of ocular larva migrans syndrome]

To elicit the differential diagnosis between retinoblastoma and ocular larva migrans, we have realized an immunological diagnosis detecting antibodies in the endoocular fluids, using gel precipitations methods (electrosyneresis, Ouchterlony, immunoelectrophoresis) with the antigens Excretions-Secretions of T. canis and T. cati larvae. We have got 8 positive results out of eight cases of ocular larva migrans and no false reaction out of 11 control sera. Theses methods appear to be better than E.L.I.S.A. because it is difficult to define the threshold value for this technic.