Consequences if surgery is not proceeded properly

• Keratectasia - When a surgeon accidentally operates too deeply in the eye, the cornea will become altered and the patient may become blind.
• Irregular Astigmatism - If laser rectification is not properly performed or when the eye is rough. The patients suffering from this error require more operation instead. At times seeing double is a result of a little inflammation.
• Dry eye – This condition is generally common, but can be easily solved by eye drops.
• Night Vision Problems – Such problems occur when doctors utilise conventional LASIK methods. The implication of night vision problems consists of many. One of the problems is blurry sight (glare and halos around objects). Distorted vision can happen at daytime too. However, at night it turns much more obvious and troublesome.
• Over or under correction - Blurry vision or very slight seeing difficulties. Most of the time patients put on contact lenses or spectacles to correct this complication. Undergoing re-treatment is also an option.

Sources:

http://www.lasikeyesurgerycorrection.com/lasik_risks.html

http://www.webmd.com/eye-health/night-vision-problems-halos-blurred-vision-night-blindness