Pseudo-accommodation with intraocular lenses implanted in the bag

Area of Science:

• Ophthalmology
• Surgical Innovation
• Visual Optics

Background:

• Cataract surgery aims to restore vision.
• Intraocular lens (IOL) implantation is standard practice.
• Evaluating post-surgical visual function, including accommodation, is crucial.

Purpose of the Study:

• To assess the accommodation potential in eyes following in-the-bag intraocular lens implantation.
• Compare accommodation after different cataract surgery techniques.

Main Methods:

• Study included 51 patients divided into two groups based on surgical technique.
• Group 1: Phacoemulsification with continuous curvilinear capsulorhexis and in-the-bag foldable IOL.
• Group 2: Extracapsular cataract extraction with capsulotomy and polymethylmethacrylate IOL. Accommodation amplitude and anterior chamber depth were measured using ultrasonic biometry.

Main Results:

• No significant difference in anterior chamber depth at distance fixation between groups.
• Statistically significant difference in anterior chamber depth at near fixation (P=.008).
• Greater change in anterior chamber depth during accommodation in the capsulorhexis group (P=.002), with significantly greater accommodation amplitudes (P=.025).

Conclusions:

• Uncomplicated phacoemulsification with capsulorhexis and in-the-bag IOL implantation appears to preserve pseudo-accommodation.
• This surgical approach may offer better accommodative recovery compared to extracapsular cataract extraction with capsulotomy.