What are the best replacement lenses for cataract surgery?
My grandmom is going for her cataract op soon, and I understand from reading an article here that there are different "types" of replacement lens available. It also mentioned something about "premium lenses" and more customised treatments. I know that what's offered will depend on her requirements to some degree, but may I please know what are these more recommended replacement lenses available in Singapore?
The intraocular lenses used for cataract surgeries can be roughly divided into 2 main groups: mononofocal vs multifocal.
Monofocal lenses have only one focusing plane, while multifocal lenses have different focusing zones with different focusing power, to allow one to have good vision at more than one distance in the same eye. Some of the newer multifocals also go by descriptions like extended range lenses.
Both mono and multifocal lenses can incorporate astigmatic correction if needed. Significant uncorrected astigmatism (astig is called 散光）contributes to blurring at all distances.
In most clinics, the standard lenses are monofocal, non-astigmatic correcting, which can already correct short and long sightedness quite well. However, some degree of residual refractive errors are expected after the cataract surgery, and generally your grandma will expect to have to wear glasses at least some of the time.
Dear Sfw, the process of making a decision to have surgery can be fraught with information overload.
Having cataract surgery and its myriad options is no exception. To be clear, there really isn’t such a thing as the “more recommended” lens implant used during cataract surgery. Understand that the primary aim of any cataract surgery is first and foremost to replace the natural lens that has turned cloudy and replacing it with a new clear artificial lens implant. In that respect, the majority of lens fulfil that objective well.
Where choices are to be made about implants are when the patient has to decide if being spectacles independent is an important goal for the patient. If the patient is happy wearing spectacles, then a monofocal lens implant would be a great choice.
Alternatively, if the patient is...
There is no single ideal lens that is will be suitable for all patients's eyes.
In general, patients will have choice of either single vision lenses or multifocal lenses. The choice will depend on:
- The patient's age
- Current spectacles prescription
- Patient's retina condition
- Patient's expectations, etc.
In my opinion, it will be best for your grandmom to discuss the options with her own eye surgeon, as the surgeon will know her eye condition best.
I hope that this is helpful to you!
Dr Tony Ho/html>