You're guessing wrong about "weaker". But no problem. They're all the same,
brand doesn't matter. Base curve doesn't mean anything either. Just take a
guess.

Sarcasm aside, the change in base curve is like putting size 8 shoes on size
10 feet. The change in axis is like putting a right shoe on the left foot.

But Nike makes good shoes, so you won't get any blisters. And a good set of
canvas deck shoes will perform just as well as Pradas.

Don't get me wrong - I'm all for buying overseas - US FDA rules frequently
enable companies to screw us Merkuns (google Lucentis and Avastin, for
example). Most American contacts are manufactured overseas and sold
worldwide. But there are three different B&L torics available in the US. We
don't know what material you bought, and we don't know what brand and
material your doctor prescribed.

When buying overseas, make sure you get the same product and the same
parameters.

-MT

Sorry - in the heat of my rant I didn't realize that you aren't subject to
the US FDA.

Base curve (BC) describes how snug it fits. If you wear lenses that are too
loose, they're uncomfortable and unstable and you won't keep wearing them.
They're pretty safe if you don't wear them.

But you bought _tighter_ lenses, according to the BC. Too-tight lenses can
be treacherous. They often feel great for a while, but lactic acid builds
up, and mucus and protein, and the tear pool can get pretty toxic.

Bottom line, you bought the lenses lawfully but you would do best to have a
local contact lens professional look at the lenses on your eye in the
microscope.

If you're going to try a pair yourself, make sure they move, at least half a
mm when you blink. The more they move, the safer they are but the more
uncomfortable and optically unstable. In general, you _should not feel soft
lenses_. When you can feel them, take them out.

20 degrees of axis error won't affect sensation. It might make your vision
blurry, and possibly not. If the fit is "stable," each lens eventually
rotates into some position and stays there, riding up and down but rotating
very little. Or not. Reach up and turn one with a finger and you get very
blurry. How many blinks before you can see again? Once it stabilizes, can
you rotate it somewhere else and see better? That's what axis does. You can
do the same with your glasses. If you can't keep them clear or you get
headaches, the new axis won't work. Bausch and Lomb lenses have rotation
indicators at 5, 6, and 7 o'clock.

In my experience, all three US B&L torics fit similarly, but I can't assume
your original prescription was B&L. And it matters.

-MT