[Presumed toxoplasmic chorioretinitis: comparative study of treatment with pyrimethamine and sulfadiazine or clindamycin].

A prospective, randomized study was conducted in 29 patients with presumed toxoplasmic retinochoroiditis to compare the efficacy of oral pyrimethamine and sulfadiazine (P + S) with subconjunctival injections of clindamycin. There was no difference in the mean visual acuity in both groups after treatment; the mean healing time was similar in the two treatment groups, 1.80 months with clindamycin and 1.88 month with P + S. However subjective improvement was obtained earlier with clindamycin. After 14 months' follow up, recurrences of ocular toxoplasmosis developed in both groups, 21% with clindamycin and 36% with P + S, respectively (NS). Other than the discomfort due to topical treatment, clindamycin did not produce any side-effects, which did happened after oral P + S. Subconjunctival injections of clindamycin provide an interesting alternative in the choice of an antitoxoplasmic ocular therapy.