Visual axial PSF of diffractive trifocal lenses

Area of Science:

• Ophthalmology
• Optical Engineering
• Biomedical Optics

Background:

• Multifocal intraocular lenses (IOLs) are crucial for correcting presbyopia and other visual impairments.
• Diffractive IOL designs offer adjustable optical properties, but their performance requires thorough investigation.

Purpose of the Study:

• To investigate the ophthalmic applications of a novel diffractive trifocal lens design.
• To analyze the impact of adjustable add powers and light distribution on optical performance.
• To simulate the performance of these lenses in human eyes, considering ocular aberrations.

Main Methods:

• Calculation and analysis of axial Point Spread Functions (PSFs) based on design parameters and pupil size.
• Simulation of optical performance using measured human ocular wave aberration functions.
• Inclusion of polychromatic light effects in the optical performance analysis.

Main Results:

• Axial and transverse PSFs were analyzed across various design parameters and pupil sizes.
• Simulations incorporating ocular aberrations demonstrated the impact on Strehl ratio and visual quality.
• The study quantified the influence of polychromatic light on the trifocal lens performance.

Conclusions:

• The developed calculus and simulation method provides a robust framework for designing and analyzing diffractive and refractive multifocal IOLs.
• Adjustable diffractive trifocal IOLs show potential for effective vision correction, with performance influenced by optical design and individual eye characteristics.
• This methodology is applicable to a wide range of multifocal lens designs for ophthalmic applications.