Characterization of visual phenomena with the Array multifocal intraocular lens

Area of Science:

• Ophthalmology
• Optometry
• Vision Science

Background:

• The Array multifocal intraocular lens (IOL) is designed to provide improved vision at multiple distances.
• However, some patients report unwanted visual sensations (UVS), particularly at night.
• Characterizing these sensations and identifying mitigation strategies is crucial for patient satisfaction.

Purpose of the Study:

• To characterize the visual sensations experienced by patients with bilateral Array multifocal IOL implantation.
• To evaluate methods for mitigating these unwanted visual sensations, specifically starbursts and glare.

Main Methods:

• A retrospective assessment of 22 patients with bilateral Array multifocal IOLs was conducted.
• Patients were divided into a dissatisfied group (UVS group) and a satisfied group.
• Subjective nighttime visual phenomena were evaluated under simulated conditions, with and without trial lenses (-0.50 D and -1.00 D).

Main Results:

• Both dissatisfied and satisfied patients reported similar visual phenomena, primarily starbursts and blurred vision.
• The UVS group described more defined starbursts with spokes and fine lines.
• Adding -0.50 D or -1.00 D lenses generally reduced the intensity of these visual phenomena.

Conclusions:

• Visual sensations after Array multifocal IOL implantation are common but vary in perceived intensity.
• Individual tolerance appears to be a key factor in patient dissatisfaction with visual phenomena.
• Overcorrection with minus lenses may effectively mitigate unwanted visual sensations.