Intraocular implants and delivery instruments are disclosed for treating ophthalmic conditions and ocular disorders, such as glaucoma. A window region including fluorine, that is, an impurity element with higher electronegativity than nitrogen, is formed in the vicinity of a front end face and a rear end face of a laser resonator. A respective adjustment device is provided for adjusting the position of each needle group, while a respective individual needle adjustment device may additionally provided for each needle.