Is an 8.3 BC significantly different from an 8.4 BC for contact lenses?!
Question:
Is an 8.3 BC significantly different from an 8.4 BC for contact lenses?
Answers:
Well in soft contact lenses 0.1 change in a base curve USUALLY doesn't make much of a difference. Soft contact lens brands usually only make a few different base curves... for example :8.3 (steep), 8.6(mediuim), 8.9(flat). Most companies make a few different sizes to cater to the different cornea curvatures. If you think about it if 0.1 was a very signifcant diffence then wouldn't all contact lens companies make every base curve increment?? With rigid gas permeable contact lenses 0.1 would make a significant difference but no so much with soft lenses.
With soft lenses a contact lens fitter will choose the closest Base Curve to the cornea curvature of the patients eye first and work from there. All contact lenses fit differently and each fit needs to be examined by an eye care professional to ensure proper fit! :)
Hope that helps a bit :)