<prompt> All are pas of the anterior segment of eye exceptLensCorneaVitreousNone  <response>: Anterior segment of the eye consists of a crystalline lens, structures anterior to it, viz., iris, cornea two aqueous filled spaces- anterior and posterior chamber Vitreous is a posterior segment structure, which is situated posterior to lens, like vitreous humor, retina, choroid optic disc Reference : A K KHURANA Comprehensive Ophthalmology edition 6, page-3 