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Eye dominance switching rapidly
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Eye dominance switching rapidly

My right eye is the dominant one but there is this phenominon where there will be a rapid switching between right and left eye.  It only occurs when I am focusing on something very close, right up to my eyes and about as far as 6 inches away.  This back and forth switching occurs usually only once at a time (right left right) and it happens in a fraction of a second.  Very fast.  And only when I'm looking closely at something for an extended period of time, like nail trimming.  Curiously this does not happen when I read.  I would say the frequency of this switching is about every 5 seconds or so when focusing on a close object.

I've had glasses and contacts for 10 years now and have regular checkups.  I wear either depending on what I feel like but not both at the same time.  I don't know how long this has been happening but it's been on my mind only recently.  I also use a computer practically all the time for work and play and have been doing so for over 20 years.  I am 30 years old.

I have slight astigmatism in my right eye and am nearsighted.  The optical power of my contacts is -1.75.  Any ideas?  I've scoured the Internet but have found nothing.

TIA,
Scott
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Your problem would not be due to your myopia or contacts.  It could be related to eye muscle alignment/misalignment problems.  Consider seeing a strabismus specialist (often listed under pediatric ophthalmologists) for an evaluation.

JCH III MD
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