Based on the type of power you have, you need different kinds of contact lenses. Broadly, there are three categories of contact lenses based on vision type:

• Spherical Lenses
  For Myopia & Hypermetropia Trouble seeing objects at a distance, or blurred vision when seeing nearby objects.
• Toric Lenses
  For Astigmatism A result of the cornea or the internal eye lens not being perfectly spherical.
• Multifocal Lenses
  For Presbyopia Blurred vision for nearby objects or while reading. Usually occurs after a certain age (40+).