Indications and counterindications
Polish (Poland)English (United Kingdom)
img
Indications and counterindications

Indications for laser vision correction surgery:

  • nearsightedness, farsightedness or astigmatism exceeding
    2 dioptre,
  • a combined defect (e.g. nearsightedness combined with astigmatism),
  • anisometropia (great difference in refractive power of two eyes)

The surgery is especially recommended for persons:

  • practising professions which require full vision acuity (policemen, drivers, sportsmen - in these cases the correction of vision defects not exceeding 2D may be considered),
  • with defect size preventing them from functioning without corrective glasses or subjectively felt as impeding unrestrained functioning in daily or professional life,
  • who for various reasons may not wear contact lenses (e.g. recurrent inflammations of conjunctivas, neovascularisation of the cornea) or glasses (e.g. nickel allergy).

A defect has to be stable, i.e. one that has not changed for the last 6 months
and a patient has to be aged between 21 and 50.

There are the following ophthalmologic counterindications:

  • glaucoma,
  • cataract,
  • degeneration or changes of the retina,
  • the cornea defects (e.g. cone), permanent post-injury damage to the cornea,
  • active inflammations of the eyes of bacterial,
    viral or self-aggressive nature,
  • dry eye syndrome

There are the following counterindications as regards general condition of health:

  • some neurological diseases,
  • rheumatic diseases,
  • autoimmunological diseases (collagenoses),
  • veneric and parasitic diseases,
  • cancers,
  • skin diseases (e.g. psoriasis),
  • thyroid and adrenal glands diseases,
  • cardiac diseases and defects (implanted cardiac pacemaker),
  • diabetes,
  • sarcoidosis,
  • hemorrhagic diathesis,
  • inflammation foci,
  • viral infections (herpes, flu),
  • some chronic diseases,
  • allergies in the period of their intensified symptoms,
  • some medicines applied,
  • addiction to medicines, alcohol or drugs,
  • pregnancy and lactation periods

Some of the above are relative counterindications, which mean that a surgery can be performed in proper time after disease symptoms have disappeared or the body regained its hormonal balance.
For persons which cannot undergo laser vision correction due to defect sizes exceeding the capabilities of laser surgery (nearsightedness exceeding - 14 D, farsightedness exceeding + 6 D) or other absolute surgery counterindications, refractive surgery offers phakic IOL implants with optic parameters effectively correcting vision defects. (see: IMPLANTATIONS OF LENSES)

Last Updated on Saturday, 22 January 2011 01:34