Central Lakes, Dunedin - South Otago, Southland > Private Hospitals & Specialists >

Dr Brett Rogers - Specialist Cataract Surgeon

Private Service

Refractive Errors and Refractive Cataract Surgery with Dr Rogers:   Short-sightedness (myopia),   Long-sightedness (hypermetropia)  and   Astigmatism

These three "spectacle conditions" all cause distance blur, however all three can be treated as a routine part of refractive cataract surgery with Dr Rogers, to reduce the dependence on spectacles for clear vision following cataract surgery.

  • In short-sightedness (myopia), the eye has a resting focus at a near distance so that people will be able to see objects more clearly at some point close to them, but the distance vision is blurry.
  • Hyperopia (long-sightedness) also causes distance blur and often does not become noticeable until the eye starts to lose its ability to change focus, frequently in middle age.
  • Astigmatism causes an image to be blurry at all distances, and can significantly affect the clarity of images for both near and distance.

Patients undergoing cataract surgery with Dr Rogers will normally have all of these conditions corrected as part of the operation, regardless of how much myopia, hypermetropia or astigmatism is present before surgery and even if this has been present since childhood. This means you can expect to be able see well enough to drive a car without spectacles. There are also options to enable you to see clearly for close-up vision without spectacles, following cataract surgery

  • Short-sightedness and long-sightedness are both corrected with a 'regular' intraocular lens (IOL).
  • Astigmatism is corrected with an (optional) 'toric' IOL.

Some suitable patients with refractive errors even choose to have a 'clear lens exchange', which is essentially a cataract operation done at an early stage, mainly to correct significant refractive errors.

  • Clear Lens Exchange is a better alternative to Lasik in many patients and is particularly suitable for longsighted hypermetropic patients with early cataract or sometimes even with no cataract at all. (Once treated, such patients will of course never develop cataract in the future.)

This page was last updated at 12:05PM on September 4, 2019.