“Vision 351 Flow” refers to a specific, advanced technology utilized in modern cataract surgery. This term encompasses the Alcon AcrySof IQ Vivity intraocular lens (IOL) and its pre-loaded “Flow” delivery system, which work together to restore vision.
Understanding the Vivity IOL Technology
The Vivity IOL is characterized by its non-diffractive extended depth of focus (EDOF) design. Unlike traditional multifocal lenses that split light into multiple focal points, the Vivity lens uses a proprietary wavefront-shaping technology, known as X-Wave, to stretch and shift light. This innovative approach creates a continuous range of vision, providing clear sight from distance to intermediate, with functional near vision. By avoiding light splitting, the lens aims to maintain vision quality comparable to a monofocal IOL.
This unique mechanism allows the eye to transition smoothly between different focal distances, mimicking the natural function of a healthy lens. The Vivity IOL’s design focuses on elongating a single focal point rather than creating distinct zones. This results in a more natural visual experience with improved contrast sensitivity in various lighting conditions.
The Flow Delivery System
The Flow system is a pre-loaded, single-use injector designed for the Vivity IOL. This system facilitates the precise and controlled insertion of the folded lens into the eye during cataract surgery. The pre-loaded nature of the Flow system streamlines the surgical procedure by reducing manual handling of the IOL by the surgeon. It ensures the lens is delivered accurately and gently into its intended position.
This delivery method is engineered to maintain the integrity of the lens during implantation and contributes to a more efficient surgical workflow. The system is designed for a smooth and consistent release of the IOL, which is an important factor for optimal lens positioning and visual outcomes.
Benefits for Patients
Patients receiving the Vivity IOL through the Flow system experience an extended range of vision, encompassing clear distance and intermediate sight, along with functional near vision. This can significantly reduce their dependence on spectacles for many daily activities like driving or using digital devices. The non-diffractive design of the Vivity IOL also contributes to a lower incidence of visual disturbances such as glare and halos, sometimes associated with traditional multifocal IOLs.
The lens is designed to provide high-quality vision across various light conditions, including low light, enhancing activities such as night driving. Patients report a more natural visual experience without abrupt shifts in focus. This visual improvement can lead to increased freedom from corrective eyewear.
Who is a Candidate?
The Vivity IOL is a suitable option for many individuals undergoing cataract surgery who desire an extended range of vision. It is particularly beneficial for those seeking reduced spectacle dependence while minimizing potential visual disturbances associated with some other premium lenses. Patients with healthy eye structures make good candidates.
This lens can also be considered for individuals with mild pre-existing eye conditions or those who have undergone previous laser vision correction. However, conditions such as severe dry eye, significant retinal diseases, or severe corneal issues can affect candidacy. A comprehensive eye examination and consultation with an ophthalmologist are necessary to determine if the Vivity IOL is the appropriate choice for an individual’s specific visual needs and eye health.