Laser eye surgeries have a very high success rate, but as with any surgical procedure there are risks that can come as a result. Despite the fact that some potential risks could result in worse vision, the possible benefits of the procedure outweigh the small possibility for problems for many who want to be rid of the burden of glasses or contacts.

Loss of Vision

Some patients actually have diminished vision when tested on a chart; though it's rare, if this problem occurs it usually can't be rectified by another procedure or with corrective lenses.

Problems at Night

In some instances, even when the patient's vision is vastly improved they still may suffer from double vision, halos and difficulty with glare, making seeing at night very difficult.

Dry Eye

The procedure may interfere with the ability of the patient to generate enough moisture; this can be very painful and require external therapy (drops) to cope with. In some cases, this can lead to more vision problems.

Over/Under Treatment

The 20/20 vision expectation is not achieved in a very large number of patients. Though the success rate for improved vision is very high, some patients still may need corrective lenses or reading lenses after the procedure has been performed.

Diminishing Results

Some recipients of laser eye surgery, particularly ones suffering from far-sightedness, have experienced diminishing results as time has passed. Laser eye surgery doesn't have a very long history to accurately judge long-term results, but the fact that some patients are losing results already doesn't necessarily bode well for the procedure's longevity in far-sighted patients.

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FDA Laser Surgery Risks and Finding the Right Doctor

All About Vision: Laser Surgery Risks and Complications