ReSTOR and Tecnis Symfony: Seeing at Multiple Distances after Cataract Surgery
Could you imagine seeing without bifocals? For most people over the age of 50, life without reading glasses or bifocals is something they experienced before the onset presbyopia. A new form of revolutionary intraocular lens is now available that can help cataract patients see at near, far and intermediate distances after cataract surgery.
To reduce or eliminate the need for glasses and contact lenses after cataract surgery, patients need to choose a lens implant that is designed to address refractive errors. Intraocular lens is now available that can help cataract patients see at near, far and intermediate distances after cataract surgery.
Intraocular lens (IOL) implants have been used successfully for years to replace cataractous natural lenses that have become sufficiently opaque to interfere with good vision. Until 2005, the only IOL option for patients was the monofocal lens which only focuses at a limited vision range. Distance vision is normally chosen, since it actually covers the longest range. Middle and near vision correction after surgery is achieved with glasses – either bifocals or trifocals.
Presbyopia Correcting Advanced Technology Multifocal/Extended Range Implants
Presbyopia is the loss of near or intermediate vision that occurs with age, due to decreased flexibility of the natural lens. These changes lead to the need for reading glasses or bifocals. In order to achieve the greatest freedom from glasses after cataract surgery, the correction of presbyopia must be addressed.
Unlike the flat surface of a monofocal IOL, the multi-tiered concentric ring surface of the Multifocal/ Extended Range of Vision IOL spreads light over multiple focal points as it passes through the lens, allowing for clear vision over a full range of distances. These intraocular lens implants are designed to reduce or eliminate the need for glasses for most vision activities like putting on makeup or shaving; reading newsprint or prescription bottles; watching television or movies in the theater; seeing your wristwatch and cell phone; looking at your computer screen and dashboard; reading road signs and following a golf ball down the fairway!
Toric Presbyopia and Astigmatism-Correcting Implants
With today’s new Advanced Technology, the Multifocal/ Extended Range of Vision IOL now has the capability of correcting astigmatism as well as distance, middle, and near vision to give the patient the clearest vision.
Advanced Technology Monofocal Toric (Astigmatism-correcting implant)
Corneal astigmatism is common and occurs when the cornea is not perfectly round. One side of the curve is steeper than the other like a football. This causes light to focus at more than one point on the retina, which creates blurred vision.
A standard monofocal IOL cannot correct or compensate for corneal astigmatism. The monofocal Toric IOL is a custom ordered lens that is specifically designed to neutralize the astigmatism in the cornea and improve the overall quality of vision. For those who have astigmatism, the Toric IOL makes it possible to correct your cataract and astigmatism in one safe procedure. While you will still need glasses for most near activities, your need for distance glasses should be much less.
All IOLs, whether they be monofocal, monofocal Toric, multifocal or extended range of vision, have an additional benefit. Besides correcting vision, these lens implants also protect against harmful ultraviolet (UV) wavelength damaging light rays.