My experience of the Symfony Toric lens
Posted , 33 users are following.
I have been short-sighted and astigmatic for most of my life. Finally cataracts meant an operation. Before the operation my myopia was -12.50 (right) and -11.00 (left), astigmatism -6 (right) and -4 (left). I agreed to have a Symphony Toric lens - ZXT375 - and this was inserted into my right eye four days ago.
My vision began to recover from the anaesthesia after a few hours. Other than a dull ache - which lasted no more than 24 hours, there has been little pain. I have been prescribed antibiotic and anti-inflammatory drops four times a day for the next month.
I did not expect that this lens would allow me to read without glasses and (at the moment) it looks like my expectations will be proved right. I have previously experienced halos around car headlights and this is unchanged. In addition I can now see starbursts around some street lights.
I removed the right hand lens from my glasses after the surgery but, having worn them for a short time, found the distortion to be too great. Other than for reading, the vision in my right eye is so much better than it was when I was wearing glasses. For the first time in over 60 years I can walk around without them - though I have to be very careful about judging distances on my left.
The clarity, the light and the colours I experience with my enhanced right eye are nothing short of remarkable.
Will update this in about 10 days
2 likes, 214 replies
Siempre
Posted
On examination there was a slight indication of posterior capsule opacity (POC) in my right eye, but it does not currently effect my vision. This will be checked again in four months time. If it is POC it can be easily treated.
My eyesight was tested and I will report the results in a few days. It appears there may be a small degree of astigmatism remaining.
Starbursts are still an Issue, but may improve.
softwaredev Siempre
Posted
When you report eyesight results, what is likely of most interest is the prescription, to see if your near vision is being reduced by being left slightly farsighted perhaps which seems likely. Your best corrected distance vision might also be of interest, in case perhaps your vision at any distance is being reduced by your visual system having some other factor reducing it.
bruce56873 Siempre
Posted
Siempre
Posted
It is a real pleasure to be largely free of glasses after so many years.
Siempre
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The results of the eye test are as follows: I can see 6/6 unaided with the right eye and 6/7.5 with the left. The left eye has better near vision and I can read N5 using both eyes. With correction for slight residual astigmatism in the left, acuity is measured as 0.04 (LogMAR chart), 6/6+2. (I am not entirely sure what these readings mean)
I am also checking my peripheral visual fields regularly due to the slightly increased risk of detached retina given my previous level of shortsightedness.
softwaredev Siempre
Posted
All those readings are measures of visual acuity. Since they moderate links, I'd suggest just doing things like searches for "logMar chart" to see conversions between logMar and other metrics. At the moment if you google:
"visual acuity conversion chart" "civil aviation authority"
You turn up a chart indicating that N5 is a metric of near visual acuity which is the equivalent at 40cm of 20/30 or 6/9 quality vision. If you google:
"The following is a list of environmental print that correlates to the acuity on a Near Vision Snellen Test Chart."
You'll see a couple of links that give examples of real world things that correspond to various near visual acuities, like that suprisingly 20/50 at near is good enough for small newprint.
The 6/6+2 means that you read the 6/6 line, plus two letters from the line below indicating you are a bit better than 6/6, but not as good as the line below (which I didn't bother looking up, in the US I'm used to 20/20 type charts so I don't know offhand what is below 6/6).
softwaredev Siempre
Posted
you can get an exact conversion for logMar and 0.04 is 20/21.9
bruce56873 softwaredev
Posted
sharon_13639 bruce56873
Posted
Bruce,
I have had the Tecnis Symfony lens installed in both eyes. I am having no trouble with any distances from 8" to as far out as I can see, probably 1/2 mile. I am pleased. It has now been about 3 months since my first insertion.
Siempre bruce56873
Posted
My eyesight has changed very little over the last two months and I remain very happy with the results. It seems to me that my near sight is very dependent on bright light to be able read small print (e.g. newsprint), but is otherwise perfectly normal. Halos around bright lights and starbursts continue, but I rarely drive at night and feel the benefits of being free of glasses after more than 60 years outweigh these disadvantages.
bruce56873 sharon_13639
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bruce56873 Siempre
Posted
sharon_13639 bruce56873
Posted
My vision is better than when I had glasses. I needed my glasses updated, but because I was getting my cataracts taken out, I wasn't about to invest in more glasses.
I have only had the Symfony Lens for a few months... since February, and because my surgeon had to go back in to remove astigmatism, the healing is still going on. I don't need glasses, and my vision is very clear. I have a small amount of glare, depending on how the light comes into my eyes I guess. I don't use fancy terms, just plain old english... it is what it is. I would do it all over again. I love being able to see like I did in my teens.
Sue.An sharon_13639
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sharon_13639 Sue.An
Posted
The only lights that cause a problem are the bright white head lights, the newer led lights that are on the newer cars. But then, they bothered me before I had the surgery as well.