| vitrectomy | Removal of the whole or part of the vitreous body in treating endophthalmitis, diabetic retinopathy, retinal detachment, intraocular foreign bodies, and some types of glaucoma. (12 Dec 1998) |
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| anterior vitrectomy | Removal of the central vitreous gel. (05 Mar 2000) |
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| posterior vitrectomy | Removal of the posterior cortical vitreous; sometimes the preretinal membranes are removed. (05 Mar 2000) |