Posted , 7 users are following.
this is a symfony with a near add or perhaps a trifocal. Shannon Wong just mentioned it on Youtube and it is also listed on FDA approval as of 5/1.
this lens was also mentioned to me by dr. safran from new jersey. but that was a couple of months before the panoptix was approved.
1 like, 21 replies
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RonAKA soks
Edited
On the blue light filter this is kind of how I have rationalized it. The natural lens has a tint to it and acts like a blue light filter. So with good eyes and no IOL we are seeing the world with a blue light filter. With the issue of colour blindness aside, we all pretty much see the same thing, and can compare colours to others. This may be especially important for photographers doing their own digital darkroom developing. You can have some confidence that what you see, others including customers see.
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So what happens when you put in an IOL? If it is clear and not tinted then all of a sudden one sees a more blue and brighter world. If the objective is to maximize light transmission and brightness then clear has an advantage. But, it will come at a cost in colour accuracy compared to a natural eye.
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This all said, the effect may not be nearly as much as one would think. I recall one study where a different aspect of IOL lens design was being compared. To make the comparison one lens of each type was implanted in the same person. The outcome although they were not comparing that part was one eye got blue light filtering and the other got clear. Nobody in the study noted any issues with colour vision or anything associated with have one clear and one blue light filter lens.
soks RonAKA
Posted
they also got fda approval for symfony optiblue last week. so we should expect the old symfony with yellow tint.
i dont have a preference either way if one is starting out. however feel comfortable if both are same manufacturer / tint.
lets see what they release to market.
soks
Posted
there is an article that says that symfony plus gives additional 0.5D. if that is the case then it is not that great improvement in near vision. +0.5 readers do not do much for me for near vision. the same article says synergy provides true near vision.
u can google symfony plus 0.5D and look at the article on healio.
janus381 soks
Posted
Based on all the things you found, I'm still thinking this is just J&J coming up with something that sounds "new" to try minimize the loss of US premium lens market share against the Alcon PanOptix tri-focal , until J&J can get their tri-focal approved in the US,
soks janus381
Posted
I am not sure why they would want to do that when they have a competing product in Synergy. It seems both Symfony Plus and Synergy have been in trials for over 2 years.
The Symfony Plus gives 0.5D taking it to -2.0 which is a little bit improvement on near (from 66cm to 53cm). The PanOptix 40 cm is a -2.5 giving it 40cm near while the Synergy is at -3 giving it 33cm. The Synergy intermediate is probably a bit worse than PanOptix for having used that diopters for 7cm better near.
As you can see that as you get closer to near the same amount of diopter give only little bit of improvement to near which is true as more diopter are needed to get better near vision.