Thin-flap laser-assisted in situ keratomileusis.

Area of Science:

• Ophthalmology
• Corneal Surgery
• Refractive Surgery

Background:

• Increasing corneal ectasia after laser in situ keratomileusis (LASIK) has led to a resurgence in surface ablation techniques like photorefractive keratectomy (PRK).
• While safer, PRK involves more post-operative pain and slower visual recovery compared to LASIK.
• A need exists for refractive procedures combining LASIK's visual outcomes and PRK's safety.

Purpose of the Study:

• To review the rationale behind Sub-Bowman's keratomileusis (SBK).
• To compare the efficacy, tolerability, and safety of SBK with PRK.

Main Methods:

• SBK utilizes a femtosecond laser to create a customized corneal flap.
• Flap thickness ranges from 90 to 110 micrometers.
• Flap diameter is tailored to individual patient needs and excimer laser parameters.

Main Results:

• SBK offers the biomechanical stability and safety of PRK.
• SBK provides visual results comparable to LASIK.
• SBK is associated with reduced post-operative pain compared to PRK.

Conclusions:

• SBK presents a promising alternative in refractive surgery.
• The procedure combines the safety benefits of PRK with the visual advantages of LASIK.
• Further evaluation of SBK's efficacy, tolerability, and safety is warranted.