Should I wait for Zeiss LARA in the US or get Symfony?

It would be nice to know if it is in the FDA trial or not and also some timeframe around US availability. 

what is LARA doing?  Giving more near vision?  Giving sharper vision?  Reducing the brightness of concentric circles?  By how much?

That’s too bad.  Would it be worth asking if Canada will have that lens?  I know we were approved for Symfony a year ahead of USA.  Might be worth exploring.

I do know some lenses we will never get for a variety of reasons.  

Soks, I have a multifocal IOL (Restor 2.5D), and the small halo I see around point sources of light is sometimes a single diffuse round ring and other times I can see 3 or 4 distinct, individual rings. They aren't always round, if a light source has a rectangular distribution, I can see multiple rectangular rings. However, the individual rings are spaced very close together and the overall diameter of the halo is pretty small.

The AT LISA is a tri-focal so you should be able to see two separate halos of different diameters with a gap in between, so you'd see the actual in-focus light source in the center, then a gap, then a halo, another gap, then the second halo.  

I sent you a link albeit from a clinic but it makes some comparisons between Symfony and atLISA.

I don’t think there is more contrast sensitivity with a trifocals as it is splitting light among 3 focal points.   Also article states halos and glare worse with multifocal and trifocals vs EDOF lenses.  There may not be rings but I think glare and starburst (think all night time issues lumped as halos in these articles) but they could be worse than rings.  I remember early weeks with Symfony that I found that worse to deal with than the concentric rings.

Interesting.   Do you get much glare as well or is those rings you describe the only night time issue with Restor?

So a multifocal is something between a trifocal and an EDoF?

 

The small halo (which often seems to be composed of individual rings) is the only night artifact I have. Although, I will note that the light source itself sometimes isn't perfectly defined either (a bit of a blob) and I think this is glare. It's mostly with LED and HID headlights and I see a very similar effect through my other eye too (the difference being the added halo from the out of focus near point). 

I think "bifocal" would be closer but they don't use that term because people associate the term bifocal with the split focus glasses and the IOL's work nothing like that. 

There are currently several multifocals with two focus points and a few designs with three focus points, "trifocal" (AT LISA). These would both be considered multifocals but I don't think that any tri-focal is available in the US at the moment. These IOL's create two or three distinct images on the retina and your brain sorts out the "correct" image. Under certain conditions, the overlapping out of focus images can create halos or other artifacts. 

The EDOF designs, like Symfony work differently and do not create two separate images on the retina. 

Strictly speaking a multifocal IOL lens is any lens which has more than one focus point (compared with only one focus point for monofocal). It can be bifocal lens (as most of them started as and thus often used synonymously with), a trifocal lens, or even an Extended Vision lens like Symfony (which has about 10 focus points).

Hi soks, it may be worthwhile to read the feedback from nancy528 who had Technis Symfony lens implant(s). Discussion bears the title "Complications from YAG capsulotomy?". Her Pb was not with Symfony's halo /  starburts / rings around street lights. Rather with

her surgeon promptly carried out a YAG the very next day after her lens implantation.

nancy528 > veepee  (2017-06)

The YAG was not done for the starbursts or halo effect.  I do see starbursts around bright street lights but I kind of think they are cool!  I know, that sounds weird but they don't bother me and may subside as my brain adjusts to them, at least that is,what I heard,

nancy528 > Susie91820  (2017-06)

Susie and Veepee,

what type of lens do you each have that caused such terrible halos?

i have Tecnis Symfony and do not have such an issue.  I have not done my second eye yet but it is supposed to be a technis mult focal to give me more near vision correction. 

"reichert com" (hqs in NY) (European Service Center in Munich Germany)

with distributors in:  France, Germany, UK and other EU countries

supplier of: Ocular Response Analyzer® G3

Random example: Dr Damien Gatinel (Paris Fr) (gatinel com), mentions ORA, IOL Master, Zeiss in his papers, but does not state what machine(s) he leases.