A comparison of reading, in people with simulated and actual central vision loss, with static text, horizontally scrolling text, and rapid serial visual presentation

Akthar, Farah; Harvey, Hannah; Subramanian, Ahalya; Liversedge, Simon Paul; Walker, Robin

doi:10.1167/jov.21.12.5

Cited by 6 publications

(3 citation statements)

References 83 publications

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“…Just as the demands of word reading are an important factor above and beyond individual letter recognition (as demonstrated, for example, by poor performance in the max accuracy condition), it is possible that trajectories that are optimal for sentence reading differ from the ones that proved best here. The current paradigm may best predict performance in an RSVP task, and that is known to differ from more dynamic reading ( Akthar, Harvey, Subramanian, Liversedge, & Walker, 2021 ). Nevertheless, the single word condition serves to demonstrate the utility of different remappings that depend upon properties of the scotoma.…”

Section: Discussionmentioning

confidence: 99%

Customizing spatial remapping of letters to aid reading in the presence of a simulated central field loss

Flowers,

Legge,

Engel

2024

Journal of Vision

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Reading is a primary concern of patients with central field loss (CFL) because it is typically performed with foveal vision. Spatial remapping offers one potential avenue to aid in reading; it entails shifting occluded letters to retinal areas where vision is functional. Here, we introduce a method of creating and testing different remapping strategies—ways to remap text—customized for CFL of different shapes. By simulating CFL in typically-sighted individuals, we tested the customization hypothesis—that the benefits of different remapping strategies will depend on the properties of the CFL. That is, remapping strategies will aid reading differentially in the presence of differently shaped CFL. In Experiment 1, letter recognition in the presence of differently shaped CFL was assessed in and around central vision. Using these letter recognition “maps” different spatial remappings were created and tested in Experiment 2 using a word recognition task. Results showed that the horizontal gap remapping, which did not remap any letters vertically, resulted in the best word recognition. Results were also consistent with the customization hypothesis; the benefits of different remappings on word recognition depended on the different CFL shapes. Although the horizontal gap remapping resulted in very good word recognition, tailoring remapping strategies to the shape of patients’ CFL may aid reading with the wide range of sizes and shapes encountered by patients with CFL.

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Section: Discussionmentioning

confidence: 99%

Customizing spatial remapping of letters to aid reading in the presence of a simulated central field loss

Flowers,

Legge,

Engel

2024

Journal of Vision

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“…A more standard approach is to leave the user in charge of the motion of the center of magnification using the mouse or trackpad. In either case, gaze tracks display a characteristic sawtooth-like time profile (see [ Akthar et al 2021 ; Harland et al 1998 ; Harvey and Walker 2014 ] for dynamic scrolling, and [ Wang et al 2023 ] for manually controlled screen magnification). Fig.…”

Section: Preliminaries: Eye Movements With and Without Screen Magnifi...mentioning

confidence: 99%

Reading with Screen Magnification: Eye Movement Analysis Using Compensated Gaze Tracks

Heo,

Manduchi,

Chung

2024

Proceedings of the 2024 Symposium on Eye Tracking Research and Applications

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Figure 1: Left: Gaze points recorded from a reader with low vision using full screen magnification to read the text document shown (unmagnified) in the background (participant P1; magnification factor: 19.2). The reader moved the magnified screen with the mouse to bring the content of interest at each time within the screen viewport. Right: The same gaze points after compensation. Note that the compensated gaze points tend to follow the text lines. A careful observer may note clusters of compensated gaze points in the zoomed-in area, corresponding to compensated fixations.

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“…It should be noted that alternative strategies for text presentation, such as rapid serial visual presentation and drifting text, may allow low-vision individuals to read on a smaller screen or use a telescopic aid for longer viewing distance. [25][26][27][28] However, how these alternative strategies will interact with display size in determining efficient reading speed requires further investigation. For the drifting text method, a minimum window size has been found to be five or six characters for effective reading.…”

Section: Determinants Of Reading Performancementioning

confidence: 99%

Digital Reading with Low Vision: Principles for Selecting Display Size

Xiong¹,

Atilgan

Fletcher³

et al. 2022

Optom Vis Sci

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SIGNIFICANCE: Digital reading devices have become increasingly popular among people with low vision. Because displays come in many sizes ranging from smart watches to large desktop computer displays, it is important to have principles to guide people with low vision in selecting suitable displays for reading. PURPOSE:The selection of effective digital displays for reading by people with low vision focuses attention on the interacting effects of print size, display size, font, visual acuity, and reading distance. This technical report aims to provide principles for identifying the minimum size of digital displays required for fluent reading by people with low vision. METHODS:We emphasize two critical factors in selecting an appropriate reading display: angular print size, which should exceed the individual's critical print size, and display size, which should allow at least 13 characters to be presented on each line. Our approach considers a low-vision individual's acuity and preferences for viewing distance and fonts.RESULTS: Through an illustrative example, we demonstrate how our approach can be used to determine display size for a low-vision individual with 20/200 acuity and central field loss who wants to read at 30-cm viewing distance with the Times Roman font. We have developed a web application based on our recommended approach to provide easy access to our algorithm. CONCLUSIONS:We provide a procedure to guide the selection of appropriate displays for a wide range of acuities. Our approach can help clinicians in making recommendations for their patients, digital product designers in developing more accessible devices, and low-vision individuals in selecting digital displays for reading.

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A comparison of reading, in people with simulated and actual central vision loss, with static text, horizontally scrolling text, and rapid serial visual presentation

Cited by 6 publications

References 83 publications

Customizing spatial remapping of letters to aid reading in the presence of a simulated central field loss

Customizing spatial remapping of letters to aid reading in the presence of a simulated central field loss

Reading with Screen Magnification: Eye Movement Analysis Using Compensated Gaze Tracks

Digital Reading with Low Vision: Principles for Selecting Display Size

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