Effects of Pupil Size on Functional Outcomes of a Simultaneous Vision Intraocular Lens

Area of Science:

• Ophthalmology
• Optometry
• Biomedical Engineering

Background:

• Trifocal diffractive intraocular lenses (IOLs) aim to provide simultaneous vision.
• Understanding factors influencing subjective visual quality after IOL implantation is crucial for patient satisfaction.

Purpose of the Study:

• To investigate the correlation between pupil size and subjective visual quality, specifically optical phenomena, following trifocal IOL implantation.

Main Methods:

• Prospective study of 52 patients after bilateral trifocal IOL implantation.
• Pupil size measured under scotopic, mesopic, and photopic conditions.
• Subjective visual quality and optical phenomena (halos, glare, double-contour) assessed.

Main Results:

• Pupil size showed a weak correlation with halos in low light conditions.
• Factors such as postoperative refractive error and lens torus significantly influenced halos.
• Preoperative refractive error, postoperative UDVA, and lens SE were significant for double-contour perception.

Conclusions:

• Pupil size is not a primary determinant of optical disturbances after trifocal IOL implantation.
• Refractive outcomes and lens characteristics play a more substantial role in visual quality.