Dark rearing (DR) causes remodeling of established retinogeniculate synapse (RGS)
Deletion or blockade of mGluR1 in mice causes similar remodeling of RGS
mGluR1 deletion occludes, and mGluR1 activation rescues, the DR-induced RGS remodeling
mGluR1 is essential for visual-experience-dependent maintenance of mature RGS