Peripheral Reading
| Status: | Enrolling by invitation |
|---|---|
| Conditions: | Ocular |
| Therapuetic Areas: | Ophthalmology |
| Healthy: | No |
| Age Range: | Any |
| Updated: | 11/16/2018 |
| Start Date: | November 1, 2018 |
| End Date: | March 1, 2019 |
Factors Limiting Peripheral Reading
The purpose of this study is to evaluate reading performance in the visual periphery by
simulating central vision loss using a computer-controlled gaze-contingent display with an
eye tracker. Participants will read a page of text at a comfortable rate. Several
manipulations hypothesized to improve reading will be tested, such as an inverted-text
"spotlight" of a single word that follows the participant's gaze.
simulating central vision loss using a computer-controlled gaze-contingent display with an
eye tracker. Participants will read a page of text at a comfortable rate. Several
manipulations hypothesized to improve reading will be tested, such as an inverted-text
"spotlight" of a single word that follows the participant's gaze.
Participants will view paragraphs of multiple sentences of text with their central vision
blocked computationally with a "simulated scotoma." Participants will be free to move their
eyes around the page of text at a comfortable rate. The three outcomes described elsewhere
will be evaluated.
In different blocks, text will contain one or more of several dynamic assistive manipulations
that are hypothesized to enhance reading: 1) inverting the text at a given position, with
instructions for the participant to attend to that location, which simulates a "surrogate
fovea" of a patient with central vision loss. 2) horizontally expanding text to alleviate
within-word crowding. 3) highlighting the next word with a visible indicator to encourage
proper eye movements.
blocked computationally with a "simulated scotoma." Participants will be free to move their
eyes around the page of text at a comfortable rate. The three outcomes described elsewhere
will be evaluated.
In different blocks, text will contain one or more of several dynamic assistive manipulations
that are hypothesized to enhance reading: 1) inverting the text at a given position, with
instructions for the participant to attend to that location, which simulates a "surrogate
fovea" of a patient with central vision loss. 2) horizontally expanding text to alleviate
within-word crowding. 3) highlighting the next word with a visible indicator to encourage
proper eye movements.
Inclusion Criteria:
- Normal vision
- English language
Exclusion Criteria:
- Less than 20/20 vision in either eye
- Abnormalities which affect vision (amblyopia, keratoconus, etc.)
- Ortho-K lenses
We found this trial at
1
site
4901 Calhoun Road
Houston, Texas 77204
Houston, Texas 77204
Principal Investigator: Daniel R Coates, PhD
Phone: 713-743-6518
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