By the early 1980s, the band's lineup had completely changed except for Biedermann. The band now featured vocalist David Godfrey, guitarist Pat Woods, bassist Geno Side and drummer Mike Miner (formerly of local speed metal band Blizzard. The band had also made a stylistic change to thrash metal, becoming major players on the local Bay Area thrash metal scene, but retained much of their progressive rock influence. This lineup recorded many demos and largely increased Blind Illusion's popularity.
In the mid 1980s, David Godfrey left to join another local thrash band called Heathen. Pat Woods briefly took over vocal duties before he himself left Blind Illusion. Mark Biedermann took over vocal duties. Then Metallica hopeful bassist Les Claypool replaced Geno Side on bass, adding a new funk influence into the band's bass lines. They released a demo that was produced by Metallica guitarist Kirk Hammett. The band also added second guitarist John Marshall, later of Metal Church, who was replaced by former Possessed guitarist Larry LaLonde.
Around 1987, the band finally got a record deal with Combat Records, with whom the band recorded their only official release, The Sane Asylum, which was released in 1988. The album was considered a thrash classic, featuring now famous tracks such as "Kamikaze" and "Smash The Crystal". The band went on a successful tour for the album but then began to fall apart around 1988. Claypool left towards the end of the tour to reform his old band Primus. LaLonde followed out the door to join Claypool and Miner left at an unspecified time. Biedermann put together a new lineup featuring guitarist Mark Strausberg, bassist Vern McElroy, and drummer Wes Anderson. The lineup began working on a new album in 1989, The Medicine Show, but disbanded before the album was released.
After Blind Illusion broke up, Mark Biedermann briefly played bass for Heathen on their Victims of Deception album and contributed guitar leads for Blue Öyster Cult on their Imaginos album. Meanwhile, Claypool and LaLonde went on to near mainstream success with Primus.
Currently, Biedermann is apparently trying to get The Medicine Show released as well as working on a new Blind Illusion album. The Sane Asylum has become an extremely rare collectors item over the years, but was finally re-released by Metal Mind Productions in a limited edition of 2000 copies on October 2, 2007.
(There were several other members unknown)