A refraction test is normally given as part of a regular eye test. It may also be described as a vision test. This test shows your eye doctor specifically what prescription you need in your glasses or contact lenses. Normally, a value of 20/20 is considered to be an optimum or complete vision.

Common Types of Refractive Errors

Types of Refractive Errors:

  • Nearsightedness (Myopia):  Reasonably good vision for near but poor distance vision
  • Farsightedness (Hyperopia):  Near vision more defective than distance vision.
  • Astigmatism:  Objects are blurred at any distance.
  • Presbyopia:  This is a physiological ageing anomaly in which persons require plus glasses for reading.


Blurred vision is the most common symptom. Other symptoms may include:

  • Double vision
  • Glare or halos around bright lights
  • Squinting
  • Headaches
  • Eye strain

Refractive surgery

Refractive surgery is a good option for you if you:

  • Want to reduce your dependence on glasses or contact lenses.
  • Are free of other eye diseases.
  • Accept the natural risks and the inherent side effects of the procedure.
  • Understand that you could still require glasses or contacts after the procedure to manage your best vision.

Options include :

  • LASIK laser vision correction for refractive errors between +3 to -9
  • PHAKIC IOLS for refractive errors beyond range of LASIK
  • Clear Lens extraction with MULTIFOCAL IOLs for extremely high errors where other options are not suitable



  • Have a suitable refractive error.


Computerized vision testing and spectacle power correction.
Lasik laser for spectacle removal
Phakic IOLs for very high refractive errors.

Refractive eye surgery is a procedure to reduce or eliminate dependence on glasses or contact lenses.

It includes cornea based procedure like LASIK and lens-based procedure like PHAKIC IOL