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Sfw from Singapore asked a question

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?

DOCTOR’S ANSWER (5)
Dr Daphne Han
Ophthalmologist
Singapore
(5 Ratings)
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Dr Daphne Han
Ophthalmologist
Singapore
(5 Ratings)
Answered on Tue Feb 13 2018 13:46:56 GMT+0000 (UTC)

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.

...

0 414 views 0 Doctors agree Tue Feb 13 2018 13:46:56 GMT+0000 (UTC)
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Dr David Chan
Ophthalmologist
Singapore
(9 Ratings)
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Dr David Chan
Ophthalmologist
Singapore
(9 Ratings)
Answered on Tue Feb 13 2018 13:34:21 GMT+0000 (UTC)

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...

0 418 views 0 Doctors agree Tue Feb 13 2018 13:34:21 GMT+0000 (UTC)
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Dr Tony Ho
Ophthalmologist
Singapore
(4 Ratings)
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Dr Tony Ho
Ophthalmologist
Singapore
(4 Ratings)
Answered on Wed Feb 14 2018 04:53:34 GMT+0000 (UTC)

Dear Sfw,

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!

Yours Sincerely,

Dr Tony Ho

0 390 views 0 Doctors agree Wed Feb 14 2018 04:53:34 GMT+0000 (UTC)
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Dr E-Shawn Goh
Ophthalmologist
Singapore
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Dr E-Shawn Goh
Ophthalmologist
Singapore
Answered on Thu Feb 15 2018 03:55:06 GMT+0000 (UTC)

There are many replacement lenses for cataract surgery available to patients in Singapore.    

The broad categories include:

  • Multifocal lenses (includes bifocal and trifocal lenses)
  • Extended range of vision lenses
  • Monofocal lenses

The choice of which category of lens to implant is probably the most important factor, and this would involve a careful and detailed discussion of your requirements with your attending ophthalmologist, as each category of lenses function differently and give the patient flexibility of vision whilst making compromises in other areas.

In general, multifocal lenses and extended range lenses give the patient clear vision at different distances including near, intermediate and distance (with a minor compromise in visual quality and side-effects of glare and haloes during dim lighting conditions). 

This is in contrast to monofocal lenses which give unrivalled visual quality...

0 375 views 0 Doctors agree Thu Feb 15 2018 03:55:06 GMT+0000 (UTC)
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Dr Claudine Pang
Ophthalmologist
Singapore
(13 Ratings)
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Dr Claudine Pang
Ophthalmologist
Singapore
(13 Ratings)
Answered on Tue Feb 13 2018 16:57:33 GMT+0000 (UTC)

Dear Sfw,

Briefly, the various types of lenses available include:

1. Monofocal lens — targets good vision at a chosen distance

2. Toric lens — corrects astigmatism

3. Multifocal lens — targets far and near vision 

4. Trifocal lens — targets far, intermediate and near vision

5. Extended depth of focus (EDOF) lens — gives an extended range of vision 

It is true that there is NO such thing as a best lens when comparing all of the above.

There is however, a best choice for each individual, depending on the individual’s visual requirements, daily activities and personal preferences.

A detailed consultation with the eye doctor will be able to elucidate which lens is best for your grandmom. 

At the same time, each type of lens has their pros and cons; these should...

0 397 views 0 Doctors agree Tue Feb 13 2018 16:57:33 GMT+0000 (UTC)
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