  a surgical procedure that removes the vitreous humor and replace it with saline solution

  Vitrectomy is a surgery to remove some or all of the vitreous humor from the eye. Anterior vitrectomy entails removing small portions of the vitreous from the front structures of the eye - often because these are tangled in an intraocular lens or other structures.

  an operation to remove the blood that sometimes collects at the back of the eyes when a person has eye disease.

  Surgical procedure where vitreous is removed from the eyeball and other procedures such as laser treatment, cutting of scar tissue, removal of blood, performed at the same time during the operation.

  A surgical treatment where an ophthalmologist removes the vitreous gel and replaces it with a salt solution. Low Vision Reading Aid (LVRA #29)

• visual impairment resulting from the retina becoming separated from the choroid in the back of the eye; treated by photocoagulation
• Retinal detachment is a disorder of the eye in which the retina peels away from its underlying layer of support tissue. Initial detachment may be localized, but without rapid treatment the entire retina may detach, leading to vision loss and blindness. It is a medical emergency