I have a BC of 8.4, and I found some contacts that I looooove but the closest BC is 8.3 =(
How badly would this effect my eyes?
It's not too big a change..
2007-09-03 12:26:35 · 5 answers · asked by Gawd 3 in Health ➔ Optical
It may or may not be a big change.
The Base Curve figure is a fitting guide, like shoe sizes,
but it's only reliable within one range of contact lenses, as (just like shoes) other elements of the design can lead to a very different fit.
One 8.4 may not fit the same as an 8.4 from another manufacturer, due to different central optical diameter, overall diameter, peripheral curves (or asphericity) or the relative rigidity of the material...
A different brand, even when likely to be an equally successful fit, really requires a trial lens for assessment.
(Even though modern thin lenses are quite forgiving and quite a few are produced on a "one size fits all" basis. "One size fits most middle of the road people" would be more accurate, but doesn't make such a good advertising slogan )
2007-09-03 19:00:07 · answer #1 · answered by Pedestal 42 7 · 0⤊ 0⤋
It's not that big of a change. However, it's not a change that only you can make. Your eye doctor has to see the contact on your eye to see how well it fits. If he/she gives the okay, then go for it. If he/she doesn't, it may not work for you.
2007-09-03 13:09:51 · answer #2 · answered by ham&cheez 2 · 0⤊ 0⤋
You cannot legally change this yourself. This is a prescribed RX parameter. It might not be a big deal, but it might be. It depends on the measurements that the Doctor took of your eyes.
2007-09-03 14:32:45 · answer #3 · answered by Anonymous · 0⤊ 0⤋
too many factors to know if a chnage from 8.4 to 8.3 is do-able or dangerous.
modulus, diameter, material, thickness, water content, etc etc
2007-09-04 08:51:30 · answer #4 · answered by princeidoc 7 · 0⤊ 0⤋
It is a big change. Consider how small your eyes are. A .1mm difference can be huge.
2007-09-03 12:40:42 · answer #5 · answered by life is good 6 · 0⤊ 0⤋