The Preoperative Factors for the Undercorrection of Myopia in an Extend Depth-of-Focus Intraocular Lens: A...

Area of Science:

• Ophthalmology
• Refractive Surgery
• Intraocular Lenses

Background:

• Undercorrection after intraocular lens (IOL) implantation can lead to suboptimal visual outcomes.
• Extend depth-of-focus (EDOF) IOLs aim to provide a range of vision, but residual refractive errors can still occur.

Purpose of the Study:

• To identify risk factors associated with undercorrection (residual myopia) following EDOF IOL implantation.
• To analyze preoperative biometric and refractive parameters that predict postoperative residual refractive error.

Main Methods:

• Retrospective case-control study including patients with EDOF IOL implantation.
• Patients categorized into residual and non-residual myopia groups based on postoperative sphere power.
• Generalized linear model used to determine odds ratios for residual myopia.

Main Results:

• Postoperative uncorrected visual acuity was worse in the residual myopia group.
• Higher preoperative cycloplegic sphere power, total corneal refractive power (TCRP), corneal cylinder, and axial length (AXL) were significant risk factors for residual myopia.
• These factors, along with anterior chamber depth (ACD) and white-to-white (WTW) distance, were particularly associated with residual myopia in high-myopia patients.

Conclusions:

• High preoperative myopia and corneal refractive power are key risk factors for residual myopia after EDOF IOL implantation.
• The risk is amplified in patients with high myopia, with additional factors like ACD and WTW playing a role.