the macular photocoagulation study randomized controlled clinical trials designed to determine whether argon laser photocoagulation is effective for preventing or delaying severe visual loss in eyes with an extrafoveal choroidal neovascular membrane secondary to senile macular degeneration ( senile macular degeneration study [ smds ] ) , ocular histoplasmosis ( ocular histoplasmosis study [ ohs ] ) , or idiopathic neovascularization ( idiopathic neovascularization study [ invs ] ) .
C0242383
senile macular
C0015392
ocular