Tetraflex accommodating dating in america 2016
I'm assuming the RX for your right eye of -8.25 is for glasses.
Contact lens powers are a bit different since the lens is at a different distance from your eye, so a conversion chart shows a -8.25D glass prescription is about a -7.75D contact lens prescription.
My intermediate vision hasn't been tested explicitly but I suspect is at least 20/20.
That is based on my subjective sense of it being better than near and because of the design of this lens where visual acuity drops off in a continuous curve from far to near, so intermediate should be around the same as far, definitely better then near.
I had originally only planned on having 1 eye done (since the other was 20/20 correctible still), but when the patch came off the next day I discovered it might be hard to adapt to the difference in vision between the two eyes even with a contact lens in the other eye.
I might have quickly adapted if I'd taken the time, but I decided I didn't want to risk it, so I had the 2nd eye operated on a few hours later.
In addition multifocal lenses reduce contrast sensitivity which is useful for night vision, while reports indicate the Symfony is at least as good as a monofocal lens.
(though there is speculation it may be benefit from some extended depth of focus, which is what the Symfony is designed to use to begin with).
I'll continue this in another post in a few minutes.
The other thing the Symfony does is to correct for "chromatic aberration", an issue which is discussed in this industry publication which quotes one prominent surgeon noting: Cataract surgery with an IOL with an Abbe number greater than that of the natural lens (47) can improve CA, so that our cataract patients could actually experience better vision quality than they did as young adults.
" Although the Symfony uses a high Abbe material (I'm assuming its the same Tecnis material that article lists as having a 55 Abbe), it also has other features to to correct for CA to improve image quality.