Two of the most common contact lens prescriptions prescribed for people today are for the eye conditions of presbyopia and astigmatism. Modern technology has made bifocal and toric contact lens designs available in both the rigid gas permeable (RGP) lenses and the soft lenses, offering more options and wear schedules then ever before.

Only a small percentage of people prefer the rigid gas permeable lenses to the soft contacts. The reason being that the RGP lenses retain their shape over the cornea more successfully than do the soft lenses, and are said to provide crisper vision to people with the eye condition astigmatism. However the majority of people prefer the soft lenses as they come in more choices and take less time to adjust.

Presbyopia is a condition that occurs as the eye