Assessing Dynamic Reading Behaviors Using Eye-Tracking Tobii Glasses
Status unconfirmed
Conditions studied: Accommodation
In brief
HYPOTHESIS: 1. Horizontal convergence tracked with Tobii glasses is a reliable substitute for accommodation in young myopes and hyperopes with normal accommodative amplitudes 2. Young mypopes and hyperopes demonstrate different reading behaviors during near work AIMS \& OBJECTIVES: 1. Compare the accommodative responses measured with the Grand Seiko open-field autorefractor to those derived from the Tobii Glasses, when subjects wear (1) spectacle glasses, (2) single vision contact lenses (SVCLs), and (3) multifocal contact lenses (MFCLs). 2. Investigate subjects' natural and dynamic accommodative behaviors and eye postures during reading using the Tobii Glasses. 3. Compare the change in natural and dynamic accommodative behaviors and eye postures during reading between myopes and hyperopes using the Tobii Glasses.
Key facts
- Study ID
- NCT05684224
- Run by
- State University of New York College of Optometry
- People needed
- 10
- Starts
- 2022-12-14
- Expected to finish
- 2024-12-31
- Last updated by the study team
- 2024-03-22
Who can join
Age: 18 and older, up to 30. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Age: Subjects who are 18 to 30 years old
- Refractive error: Subjects with myopia between -1.00 and -5.00 D in each eye (n = 5), or hyperopia between +2.00 and +5.00 D in each eye (n = 5), determined by spherical equivalent using dry manifest refraction and binocular balance
- Astigmatism <= 0.75 D in each eye
- Anisometropia <= 1.50 D
- BCVA at distance 20/20 in each eye
- Habitual contact lens wears or willing to wear single vision and multifocal contact lenses during the 2nd study visit
- Normal eye posture and accommodation
- Good general and ocular health
You may not qualify if…
- Strabismus at distance or near
- Amblyopia
- Significant anisometropia (>1.50 D)
Where it is running
- Xiaoying Zhu — New York, New York, United States (enrolling)
Full record on ClinicalTrials.gov
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