Purpose: To analyze possible mechanisms to induce angle closure glaucoma (ACG) with nanophthalmos. Methods: The anterior segments of 14 eyes from 7 nanophthalmos patients were examined by an Ultrasound Biomicroscope, Cases 1 and 2 had no history of any other ocular diseases or treatments. The right eye in case 3 had untreated uveal effusion syndrome. In cases 4, 5 and 6, LI had been already performed because of increased in- Methods: To analyze possible mechanisms to induce angle closure glaucoma (ACG) with nanophthalmos. Methods: The anterior segments of 14 eyes from 7 nanophthalmos patients were examined by an Ultrasound Biomicroscope, Cases 1 and 2 had no history of any other ocular diseases or treatments The right eye in case 3 had untreated uveal effusion syndrome. In cases 4, 5 and 6, LI had been been performing because of increased in-