I have had natural monovision most of my life, I'm now 52.  My eyes were
always corrected to the same level until about 2 years ago when my
presbyopia became bad enough I could not not read normal text with my
glasses on.  I persuaded my optomotrist to prescribe monovision glasses
which work very well for me.  I need to take my glasses off for very
close work but not for intermediate and distance.  I can read normal text
with the glasses.

Without my glasses, I can see fine for distance and near but have
problems with intermediate vision.  Since I'm a computer type,
intermediate vision is what I do mostly at work, therefore the monovision
glasses are worn mostly for work.  For nearly all other activities,
including driving and reading, I don't need my glasses although switching
back and forth repeatedly from near to distance may cause enough strain I
put them on.  I have reasonable depth perception, probably because I grew
into tvision disparity gradually.

jhaviland@bigfoot.com