Enhancing the Intermediate Vision of Monofocal Intraocular Lenses Using a Higher Order Aspheric Optic

Area of Science:

• Ophthalmology
• Optics
• Biomedical Engineering

Background:

• Standard monofocal intraocular lenses (IOLs) offer excellent distance vision but limited intermediate and near visual capabilities.
• Improving intermediate vision is crucial for functional vision in daily activities, such as computer use and reading.
• Novel IOL designs aim to expand the functional visual range of monofocal IOLs.

Purpose of the Study:

• To evaluate a novel monofocal intraocular lens (IOL) engineered with advanced refractive technology to enhance intermediate visual acuity.
• To compare the optical performance of the new IOL design against a standard aspheric monofocal IOL.

Main Methods:

• Simulated visual acuity was calculated using optical bench data across a range of diopters.
• The influence of corneal higher order aberrations (HOAs) and pupil size on visual acuity was assessed using eye models.
• Preclinical evaluation of photic phenomena susceptibility was conducted by measuring light distribution intensity.

Main Results:

• The new monofocal IOL demonstrated improved simulated visual acuity in the intermediate range (-1.50 D) by approximately 0.1 logMAR compared to a standard IOL.
• Distance visual acuity remained comparable between the new and standard IOLs (difference < 0.05 logMAR).
• The new IOL showed similar tolerance to decentration and susceptibility to photic phenomena as the standard IOL.

Conclusions:

• The novel monofocal IOL design successfully enhances intermediate vision.
• Distance visual quality is maintained comparable to standard aspheric monofocal IOLs.
• The new IOL design does not increase photic phenomena, offering a promising alternative for improved visual function.