Cataract Bilateral

Cataracts are cloudings of the lens, primarily due to aging. Surgery is the primary treatment for cataracts. The most commonly used surgical technique is phacoemulsification, which involves fragmenting the lens using a high-frequency ultrasound probe and removing the fragments. Phacoemulsification is more common due to its advantages. Recently, a new approach has emerged, using high-frequency pulsed vacuum technology for cataract ablation. This less invasive approach is expected to allow for faster patient recovery and reduce surgical risks. High-frequency pulsed vacuum utilizes the pulse-pulse principle by interrupting the vacuum every tenth of a second. This interruption creates an impact moment between the cataract material and the cannula tip, dissecting the cataract without damaging the surrounding delicate tissue. High-frequency pulsed vacuum maintains anterior chamber stability while creating sufficient dissection to aspirate the cataract material. This energy also cools the tip, allows for better vacuum control, and significantly reduces turbulence within the eye. More importantly, high-frequency pulsed vacuum disrupts endothelial cells less and causes less edema than mechanical ultrasound. This technique therefore appears ideal for treating patients with at-risk corneas (low endothelial cell count, risk of decompensation and corneal transplantation). The objective of the study is to demonstrate the benefits of this approach using high-frequency pulsed vacuum technology through a randomized, comparative, crossover study.

This clinical trial compares two phacoemulsification systems used in a bilateral cataract surgery subjects, in order to study CDE and Ultrasound time during cataract removal

Cataracts are defined as opacification of all or part of the crystalline lens, resulting in reduced vision. It is a common disease in France, affecting more than one in five people over the age of 65, and almost two in three over the age of 85. Cataract treatment is exclusively surgical. In the case of bilateral cataracts, which account for 70% of cases, Delayed Sequential Bilateral Cataract Surgery (DSBCS), which involves operating on both eyes with an interval of a few weeks, is the reference treatment in France. The practice of DSBCS has long been justified by the need to reduce the risk of post-operative complications, essentially refractive error and bilateral endophthalmitis. Today, thanks to numerous technological advances in cataract surgery and new intraoperative standards, these complications have become exceptional. Since 2009, the International Society of Bilateral Cataract Surgeons (ISBCS) has issued a guide to best practice (the ''ISBCS General Principles for Excellence in ISBCS''), enabling surgery on both eyes to be performed on the same day in complete safety. As a result, Immediate Sequential Bilateral Cataract Surgery (ISBCS), which involves operating on both eyes on the same day, could be performed with no additional risk compared to SDBCS, while providing the same level of postoperative visual acuity. In view of these factors, we hypothesize that CCBIS would be an efficient alternative to DSBCS in cases of bilateral cataract, for the patient and his family, the hospital and the health insurance company. In addition, its adoption would reduce delays in access to treatment, thus promoting better access to care in the situation of growing demand for this treatment, particularly in areas with fewer medical facilities. The aim of thisproject is to evaluate the associated costs and quality of life in comparison with CCBSD, based on a prospective, multicenter, randomized controlled trial.