Patients who require cataract surgery may consider presbyopia-correcting IOLs (intraocular lenses) as they could help restore the full vision range without the need for eyeglasses. These 'premium lens implants' are designed to help reduce or eliminate the need for glasses, and deal with issues with near vision. This near vision problem is known as presbyopia, and lenses such as the Crystalens can correct presbyopia.
There are mainly two kinds of presbyopia-correcting intraocular lenses, Accommodating IOLs and Multifocal IOLs. Multifocal lenses are further subdivided into refractive and diffractive lenses. The premium eye lens implants have a key advantage over the traditional mono-focal IOLs. They can offer an extended focal range which promotes clear vision at different distances for those suffering from presbyopia.
A recent news article on cataract and lens implants suggests that toric presbyopic IOLs have managed to revolutionize the services that cataract surgeons can provide to patients suffering from astigmatism. A large variety of toric presbyopia-correcting intraocular lenses is now available to surgeons. Each ofthese lenses has a unique function and design. Some examples include the Crystalens Trulign from Bausch & Lomb, the AcrySof ReStor Multifocal from Alcon Laboratories and the Tecnis Symfony Toric from Johnson & Johnson Vision/Abbott.
A single-step correction for astigmatism
Irrespective of the lens chosen, surgeons are now offering a huge change to patients with serious astigmatism- a simple, single-step correction/treatment of presbyopia. Patients who were earlier interested in presbyopia correction were typically offered a low-add multi-focal accompanied with AK (astigmatic keratotomy) incisions. This treatment was administered to patients with astigmatism that was more than 1.75 D.
But patients with more than (or equal to) 1 D seeking presbyopic correction would now be given a toric EDOF (extended-depth- of-focus) lens. This type of lens helps elongate the mid-near to distant focal length range.
Even though the latest IOLs have simplified patient counseling, the traditional methods of surgery and preoperative analysis haven’t really changed. In fact, the new information regarding the impact of subsequent corneal astigmatism requires the incorporation of additional steps in determining the most suitable IOL power.
Choose an experienced presbyopic-correction IOL surgeon
The majority of the cataract surgeons you encounter will be highly skilled and experienced in the various techniques related to traditional mono-focal IOLs. However, if you are seeking treatment of resbyopia with accommodating or multifocal IOLs, then you need to ensure that your cataract surgeon is well-practiced in the latest presbyopic correction IOL technology. You will feel more assured about the results if your doctor has undergone suitable training in the performance of cataract surgery using premium intraocular lenses.