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Corneal perforation during laser in situ keratomileusis
Journal of Cataract and Refractive Surgery
|August 13, 1999
Summary
Corneal perforation during laser ablation in laser in situ keratomileusis (LASIK) can occur due to excessive dehydration or unexpected corneal ectasia. Careful corneal examination and hydration are crucial to prevent this complication.
Area of Science:
- Ophthalmology
- Refractive Surgery
Background:
- Laser in situ keratomileusis (LASIK) is a common refractive surgery procedure.
- Complications, though rare, can occur during LASIK, necessitating thorough understanding and prevention strategies.
Observation:
- Two cases of corneal perforation during the laser ablation phase of LASIK are presented.
- The perforations occurred despite successful flap formation, indicating issues specific to the ablation process.
Findings:
- Excessive corneal dehydration from prolonged microscope use may alter laser ablation rates, leading to perforation.
- In retreatment cases, pre-existing corneal ectasia can increase perforation risk even with shallow ablations.
Implications:
- Avoiding excessive corneal dehydration during LASIK is essential.
- Preoperative assessment of corneal topography and shape is critical, especially in retreatment cases, to mitigate perforation risks.