Can our mental processes be affected by blurred vision?

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With apology for hijacking another thread, I have brought this question here.

Epiretinal membranes -- http://www.stlukeseye.com/Conditions/Ep ... mbrane.asp -- are beginning to blur and distort my vision, and that is causing difficulty for me at work. My left eye is corrected to 20/20 and I can read with it, but flagpoles do look like wavy lines. My right eye is blurred down to a best-correction of 20/40 and I *cannot* read with it, and its wavy factor is something like looking into one of those curvy mirrors in the funhouse. A specialist has said my corrected vision would have to get to below 20/50 before he would consider recommending a procedure used to go inside the eyeball and scrape away the epiretinal membranes.

I work as a mechanical fabricator, and here is what happened just a week ago:

My boss ordered three more of a certain device I had initially designed, engineered and fabricated about a year ago, and I had the original sitting right in front of me to copy. But when I got to a part of the process that required some tricky bending, I could not figure out where to place the marks so some bends would come out right. I had done that without trouble a year ago, but now my eyesight was not giving me a clear picture to take into my brain, and my intellect could not sharpen that picture so my mind could produce an output of any quality greater than the input ... and even after setting that entire project aside for a few days, I still had the same problem and ended up scrapping one piece I had bent before spending twice the amount of time it should have taken to finally get all three done correctly.

Does poor vision ever trouble mental processes for anyone else here?

sinsboldly: I am trying to discern whether I have any legitimate basis for making an application for early SSI (at 59 rather than the usual 62) with a little SSDI.

I am not sure, but there is a huge discrepancy between the vision in my left eye and my right eye...my left eye has a severe astigmatism and my right eye has always had to overcompensate..even with glasses...and um...I have issues with perspective and depth perception...and stuff like that...