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Related Experiment Video

Updated: Jun 21, 2026

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Eye-tracking to Distinguish Comprehension-based and Oculomotor-based Regressive Eye Movements During Reading

Published on: October 18, 2018

Does a line guide improve reading performance with stand magnifiers?

Allen M Y Cheong¹, Alex R Bowers, Jan E Lovie-Kitchin

¹School of Optometry, The Hong Kong Polytechnic University, Hong Kong, SAR, China. soallen@inet.polyu.edu.hk

Optometry and Vision Science : Official Publication of the American Academy of Optometry

|August 8, 2009

Summary

This summary is machine-generated.

A line guide improved navigation for low vision readers using stand magnifiers (SM), but slowed reading speed. Despite this, nearly half of participants preferred using the SM with the guide.

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Area of Science:

Ophthalmology
Human-Computer Interaction
Assistive Technology

Background:

Reading difficulties are common for individuals with low vision using stand magnifiers (SM).
Navigation along text lines and returning to the start of the next line are significant challenges.
Line guides are proposed as a potential aid to improve navigation performance.

Purpose of the Study:

To evaluate the impact of a simple line guide on navigation performance for low vision readers using SM.
To assess changes in reading speed, navigation time, and errors with and without a line guide.

Main Methods:

Twenty-nine participants with age-related macular degeneration used their habitual SM with and without a line guide.
Magnifier movements were tracked using a 3 SPACE Isotrak system.
Reading speed, navigation times, errors, and participant preferences were recorded.

Main Results:

The line guide improved forward navigation control for some users but increased corrective vertical movements during retrace.
A small decrease in reading speed (approx. 6 wpm) and an increase in navigation times were observed.
48% of participants preferred reading with the line guide attached to their SM.

Conclusions:

The line guide enhanced forward navigation but hindered retrace, leading to slower reading.
Despite slower speeds, a significant portion of users preferred the line guide.
Design modifications and strategy training could further improve line guide effectiveness for low vision readers.