Head Coil-Mounted Vision Correction Device for Magnetic Resonance Imaging

TL;DR

This paper introduces an MRI-compatible, head coil-mounted vision correction device that is easy to switch lenses and adjustable, improving upon prior designs for visual correction during fMRI.

Contribution

The paper presents a novel, cost-effective, 3D-printed head coil-mounted vision correction device with improved ergonomics and adjustable features for MRI use.

Findings

Device is easily 3D printed using MRI-compatible plastics.

It offers quick lens switching and adjustable inter-pupillary distance.

The design improves comfort and usability over previous coil-mounted solutions.

Abstract

Correction for nearsightedness and farsightedness is an important concern for functional magnetic resonance imaging (fMRI) experiments involving visual stimuli in humans. In the absence of personal contact lenses, spherical refractive errors are typically corrected using interchangeable lenses mounted in goggles or glasses frames worn by the participant, or mounted on the head coil during scanning. The coil-mounted device described here avoids the ergonomic challenges encountered with head-mounted goggles and addresses limitations of prior coil-mounted designs, including ease of lens switching and inter-pupillary distance adjustments. Our device can be 3D printed economically with MRI-compatible plastics, including PLA.