Does under prescribed lenses makes computer work more comfortable?

Hey,

I am moderatly myopic, around -3.5D for both eyes. After going to the
optician today, I've found that it is actually more comfortable to use
under prescribed lenses, say by around 0.5D, when doing near reading.
I've never noticed this (since I've never tried under-prescribed
lenses for reading), and wonder if this is normal, or really a sign of
the onset of presbyopia?

ls

 

If you are 40 or above, it is the onset of presbyopia.

 

Hi

Some undercorrection is more convenient at any age.
Not only because of FOCUSING(=better accomodation) but
because of MAGNIFYING OF THE OBJECTS(=better resolution).
I noticed this fact since I was a kid: I used no glasses
for more convenience for reading&writing and when my prescription
passed -3D I used my old prescription glasses
for reading&writing.

Note that too much undercorrection is not more convenient
because you cannot read with _both_ eyes if
you read from a distance less than 8 inch.

2 D undercorrection is more convenient
for reading and writing and
1 D undercorrection is more convenient for computer work.

If your eyes are aging than you have no choice
but to use undercorrection (aging eyes cannot
focus well on a near object).


amni

==============================================

 

Hey, guys,

Thanks for the various feedback. I'm 33 this year and was wondering if
it could be a sign of weakening sight, or just mere paranoia.

I understand that that is a movement now to prescribe progressive
lenses for young myopic kids, with under correction of about 1.5D for
near reading. In singapore, where 80% of the population is myopic,
treating myopia is a big issue right now. So I guess under correction
for near reading does make things more comfortable at all ages.

So perhaps instead of going for 0.5D under correction, I might as well
try a 1.0D undercorrection. For someone whose job is glued to the
computer for 8-10 hours a day, anything to reduce eye strain is a
plus!

ls

 

Please forgive my ignorance, but could you please tell me what is
accomodative training?

ls