LASIK for Hyperopia Using an Aberration-Neutral Profile With an Asymmetric Offset Centration

Area of Science:

• Ophthalmology
• Refractive Surgery
• Corneal Aberrations

Background:

• Large pupil-to-corneal vertex offset can complicate refractive surgery.
• Understanding the impact of centration strategies on outcomes is crucial.

Purpose of the Study:

• To evaluate refractive results and higher order aberrations (HOAs) after LASIK for hyperopia.
• To assess outcomes in eyes with significant pupil-corneal vertex offset using an aberration-neutral profile.

Main Methods:

• Retrospective analysis of 46 eyes from 26 patients undergoing LASIK for hyperopia.
• Utilized an aberration-neutral profile with corneal vertex centration and asymmetric offset.
• Included eyes with pupil-corneal vertex offset > 200 µm; outcomes analyzed at 3 and 6 months.

Main Results:

• Mean spherical equivalent improved from +3.43 D to +0.21 D (P < .0001).
• Significant correlations found between pre- and postoperative HOAs, including vertical trefoil and coma.
• Visual acuity outcomes were comparable to preoperative corrected visual acuity.

Conclusions:

• LASIK for hyperopia with corneal vertex centration and asymmetric offset is safe and predictable.
• Maintaining postoperative keratometry < 49.00 D and corneal vertex centering may minimize coma induction.