Julio Alberto Castillo Rodríguez (born 11 October 1976), commonly referred to by his alias Ojo de Vidrio (English: Glass Eye), is a Mexican suspected drug lord and former high-ranking leader of the Jalisco New Generation Cartel (CJNG), a criminal group based in Jalisco.
He is the son-in-law of Nemesio Oseguera Cervantes (alias "El Mencho"), the leader of the CJNG and one of Mexico's most-wanted drug lords.
He was reportedly responsible for managing money laundering schemes for the CJNG.
In June 2015, he was arrested in Jalisco along with his brother-in-law Rubén Oseguera González (alias "El Menchito"), and imprisoned at the Federal Social Readaptation Center No.
1, Mexico's maximum-security prison.
He was released a month later for lack of evidences.
Mexican federal authorities re-arrested him in April 2016 for his alleged involvement in the CJNG.