Functional reading acuity and performance: Comparison of 2 accommodating intraocular lenses.

Area of Science:

• Ophthalmology
• Biomedical Engineering
• Vision Science

Background:

• Accommodating intraocular lenses (IOLs) aim to restore near vision after cataract surgery.
• Comparing the functional reading performance of different IOL models is crucial for patient outcomes.

Purpose of the Study:

• To compare the functional reading acuity and speed between the Tetraflex and Crystalens accommodating intraocular lenses (IOLs).

Main Methods:

• An observational study involving 4 investigative sites within an FDA clinical trial.
• The MNRead functional reading test was administered to patients with bilateral Tetraflex IOLs (Group 1) and Crystalens IOLs (Group 2) approximately one year postoperatively.
• Groups were matched for key demographic and visual acuity parameters, with all examinations centrally scored.

Main Results:

• Group 1 (Tetraflex) included 96 patients; Group 2 (Crystalens) included 55 patients.
• Patients with Tetraflex IOLs exhibited significantly better reading performance at multiple print sizes (20/63 to 20/25) compared to Crystalens IOLs (P < .004).
• A higher proportion of Tetraflex patients achieved reading speeds of 80 words per minute or more across all tested print sizes (P = .002).

Conclusions:

• The Tetraflex accommodating IOL provides superior near reading ability compared to the Crystalens accommodating IOL.
• This difference was statistically significant across all tested print sizes, ranging from 20/25 to 20/63.