I suggest you immediately file a notice of claim against the prison (meaning the state or county which runs it), which must be done within 90 days of the incident for which you are suing. If his glasses have not yet been replaced, this is considered an ongoing violation. The lawsuit must then be filed within 1 year and 90 days from the incident. I assume you have no criminal lawyer- if you cannot afford one you must contact your local Legal Aid Society immediately, to handle the matter of your brother's early release- and immediate protective custody, or at least relocation away from his current cell block. Your brother may have an action for violation of his civil rights for failure of the prison to appropriately respond to the incidents you mentioned- and this would be handled by a civil attorney. He must make a written complaint to the sheriff or warden, and bureau of internal affairs, and local district attorney. This will start an investigation into the incidents, as well as the prison. You didn't mention if your brother received dental work, what his injuries were when he was jumped and whether he received medical treatment- but assuming he did not, that is also actionable.