Little has been written regarding the use of the slit lamp and the corneal microscope as an aid to ophthalmic treatment. Berliner1 mentioned their use in the removal of foreign bodies from the cornea. This use became apparent to me several years ago, since many foreign bodies are so small that they can hardly be visualized by any other method. Particularly in Hilo small spicules from the edges of sugar cane leaves commonly lodge in the cornea. These penetrate into the stroma and are nearly transparent ; consequently they can be seen only by direct and indirect retroillumination. They may be multiple and can be removed only under magnification with the microscope. Otherwise, they are absorbed slowly, with ocular disability lasting from one to several weeks. Any foreign body can be removed more precisely from the cornea by this method. There is no need for excessive trauma. The exact direction