Laser surgery is very safe and effective. But some patients may have side effects. Your doctor will discuss these with you and clear your doubts before surgery. Some possible side effects are:
- Undercorrection / overcorrection :
Under correction may sometimes be planned intentionally or may occur as an unintentional effect. As a result, the eye may remain short-sighted. If the degree of residual myopia is significant, you may be treated again later. Overcorrection occurs very rarely.
- Glare and halo effect:
You may feel some sensitivity to light at night or in bright sunlight. Sometimes in dim light, you may see a faded ghost image around the sharp bright image. This will pass after the first few days or weeks.
- Decease in contrast sensitivity:
Some people find that their night vision has become a bit dull. This happens because ofa decrease in theirability to discriminate between different contrast levels. The Wave front assisted procedure minimizes night vision problems since minute imperfections and aberrations are also taken care of.
- Flap complications:
Sometimes the anterior corneal flap that is made in LASIK may not be complete. In such situations the flap is repositioned and surgery may be re-attempted after three months. In rare instances,the flap may tear or become detached. In such a case the flap in repositioned and contact bandage lens may stay for longer period.
- Corneal ecstasia:
This can occur if the corneal thickness is less to begin with, or if the cornea is thinned more than it can withstand. Persons with low corneal thickness are not suitable for LASIK. Other serious complications like corneal infections, corneal edema, corneal perforation etc., though possibleare extremely rare.