<unk> for cataract"; Wellcome Collection illustration of Indian doctors performing the technique.<unk> is the earliest documented form of cataract surgery. As a cataract is a clouding in the lens of the eye,<unk> is a technique whereby the lens is dislodged, thus removing the opacity. Although<unk> is nowadays routinely practiced only in remote areas, it was a precursor to modern cataract surgery and pars plana vitrectomy.
Couching 
Craterization
Bookmarking
Denudation 
Bread loafing
Granulation
Moist desquamation
Desquamation