Archived posting to the Leica Users Group, 2014/05/24

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Subject: [Leica] Vision problems, the saga continues
From: pklein at threshinc.com (Peter Klein)
Date: Sat, 24 May 2014 01:09:47 -0700

Some of you may remember my travails with over the last three years with 
two cataract surgeries and several complications.  One lingering issue 
is that while I now have good distance vision, I also have double vision 
when looking to the right.  Several ophthalmologists have slowly 
converged on the problem but never completely solved it, despite many 
appointments and several different changes of glasses.

I finally had my appointment with a doctor who specializes in this 
issue, which is called strabismus. To make a long story short, my eyes 
are slightly misaligned. I had eye muscle surgeries as a kid which 
pretty much fixed it for most of my life, but with age it's reappeared. 
The cataract surgeries changed my vision from nearsighted to normal,  
which made the misalignment more noticeable.  The prism corrections in 
my glasses that the other eye docs prescribed are reasonably good, but 
could be improved.

The verdict is that I will never be free from glasses despite now having 
good distance vision. I am not a candidate for surgery--the misalignment 
is not serious enough to be worth the risk.  I have to wait another 
month and a half for an appointment with the "ortho" person, who will 
mess with more prism corrections and get it as right as they can.

All this directly affects my use of Leica rangefinder cameras. Since the 
cataract surgeries, I've found that I can focus my M6 and M8 much more 
easily bare-eyed than with glasses (I think the glasses' astigmatism 
correction simulates some degree of diopter change). So I need to take 
my glasses off to best use the Ms.  All of this fiddling with glasses 
gets in the way of using the Leica quickly to photograph people, which 
is one of the reasons why I use RF cameras in the first place.

What's maddening is that I know I can get the viewfinder right. I can do 
it with the little Megaperls 1.15x magnifier, which has an adjustable 
diopter (unfortunately, it's not calibrated).  But I can't use it for 
real shooting with glasses, because it has insufficient eye relief to 
see the full normal lens frame, and the metal eyepiece with fingernail 
notches (for focusing) will scratch my glasses. Leica diopters have flat 
metal eyepieces, and I can't try them locally, so I have no idea what 
the eye relief will be or if glueing felt on them would work for me.

I'm not giving up--eventually I'll find out what diopter I need, and 
risk having to sell it if it doesn't work.

The good news, of course, is that I still can see.   :-)  And I will 
continue to make images somehow.  But I am really bummed out by the 
possibility that I might not be able to be decisive-moment Leica RF 
people-shooter any more. I don't want that to happen.

--Peter


Replies: Reply from leica at jayburleson.com (Jay Burleson) ([Leica] Vision problems, the saga continues)
Reply from jhnichols at lighttube.net (Jim Nichols) ([Leica] Vision problems, the saga continues)