Objective optical quality and visual outcomes after the PresbyMAX monocular ablation profile

Area of Science:

• Ophthalmology
• Refractive Surgery
• Visual Optics

Background:

• Presbyopia correction aims to restore near vision while maintaining distance vision.
• Monocular presbyopia correction with the PresbyMAX system offers an alternative approach.

Purpose of the Study:

• To evaluate the objective visual quality following presbyopia correction using the PresbyMAX monocular mode.

Main Methods:

• Prospective study of 28 eyes undergoing PresbyMAX monocular mode correction.
• Assessed visual acuities preoperatively and up to 1 year post-surgery.
• Analyzed optical quality using Hartmann-Shack wavefront, MTF cutoff, Strehl ratio, and OSI.

Main Results:

• High rates of uncorrected distance (100%) and near (94.4%) visual acuity achieved at 1 year.
• Increased spherical and total higher aberrations post-surgery (P<0.001).
• No significant changes in MTF, OSI, or Strehl ratio; transient optical quality decreases noted in nondominant eyes.

Conclusions:

• PresbyMAX monocular mode is a safe and effective treatment for presbyopia.
• The procedure has a limited effect on overall optical quality.
• Short-term optical quality degradation was mainly observed in bi-aspheric ablated eyes.