 Preoperative ocular pathology: amblyopia, rubella cataract, proliferative diabetic retinopathy, shallow anterior chamber, macular edema, retinal detachment, aniridia or iris atrophy, uveitis, history of iritis, iris neovascularization, medically uncontrolled glaucoma, microphtalmus or macrophtalmus, optic nerve atrophy, macular degeneration with anticipated best postoperative visual acuity less than 2030, advanced glaucomatous damage, etc. 