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LASIK Eye Surgery — risks and complications

5 documented risks. Severity reflects clinical significance, not probability.

Dry eye (transient or persistent)

minor50.00% (30.00–70.00%)

Prevention: Pre-operative tear film assessment; lubricating drops; punctal plugs in selected patients.

Sources: aao-ppp-refractive

Flap complications (dislocation, microstriae)

moderate0.50%

Prevention: Femtosecond laser flap creation; protective shield first night; avoidance of eye rubbing.

Sources: escrs-refractive-guidelines

Ectasia (corneal weakening)

severe0.05%

Prevention: Pre-operative topography to exclude keratoconus; appropriate residual stromal bed thickness.

Sources: aao-ppp-refractive, escrs-refractive-guidelines

Under- or over-correction requiring enhancement

minor5.00% (2.00–10.00%)

Prevention: Accurate pre-operative refraction; modern eye-tracking laser systems.

Sources: cochrane-lasik-vs-prk

Glare or halos at night

minor10.00% (5.00–20.00%)

Prevention: Wavefront-guided treatment in selected patients.

Sources: aao-ppp-refractive