<prompt> Onion peel appearance cataract is seen in which of the following types?Posterior subcapsular cataractAnterior subcapsular cataractPosterior polar cataractAnterior polar cataract  <response>: Posterior polar cataract Caused by persistence of the hyaloids aery. Strong adherence of the opacity to the weak posterior capsule Can be stationary as well as progressive type 1 Stationary-well circumscribed circular opacity localized on the central posterior capsule. Concentric thickened rings around the central plaque opaciy are seen Bulls eye. onion peel appearance. 2 Progressive type-whitish opacification in the posterior coex radiating rider opacity. Feather and scalloped appearance is seen. Ref: researchgate.net 