Influencing Factors of the Corneal Endothelial Cell Loss (PREDICS)

Identification of Factors That Influence the Corneal Endothelial Cell Loss During Phacoemulsification

Cataract surgery is the most commonly performed surgical procedure worldwide. Postoperative visual function depends on implant into the crystalline lens, retinal lesion, corneal damage or glaucomatous damage. Moreover, preoperative corneal endothelial damage should be as low as possible to provide corneal transparency. Indeed, the endothelium plays important role in maintaining corneal transparency. The loss rate of endothelial cell after cataract surgery ranges in the scientific literature from 8 to 15 %. Severe endothelial cell loss contributes to corneal edema. This edema resulting in a loss of visual acuity and may require corneal transplantation as a last resort. Various studies describe some factors that affecting endothelial cell loss such as the cataract density, pupil abnormalities (small diameter), Advanced age or short axial length. However, few studies have been demonstrated the link between endothelial cell loss and the volume of fluid used during the intervention or the use of intracamerular substances. This study wants to establish a correlation between endothelial cell loss and predictive factors. Thus, knowledge of these factors would have ensured a better control of endothelial dysfunction.

Endocapsular technique (Divide-and-conquer) and supracapsular technique (Subluxation) will be used equally.

Inclusion Criteria: Patients undergoing cataract surgery Visual acuity monoyer scale <8/10e (> +0.2 logMar) Nuclear, cortical and posterior subcapsular cataract with normal density to severe in the LOCSIII classification Covered by the social security scheme Have given their oral agreement Exclusion Criteria: Corneal disease: keratitis, dystrophy or corneal degeneration Any disease of the anterior segment Low preoperative endothelial cell density <1000 c/mm² Pregnancy, lactation Risk factors for surgical per-operative complication Uncontrolled ocular pressure Combined surgery (cataract with corneal graft, cataract with glaucoma surgery, cataract with vitrectomy, ....) Under legal protection