Screen Viewing Effects for Computer Vision Syndrome
What You Need to Know Before You Apply
What is the purpose of this trial?
In this experiment, subjects will view a cross pattern on the screen and be asked to focus their eyes on it. The cross pattern will look like it is moving towards and away from the eye in a back-and-forth motion. As the subjects focus their eyes on the shapes, the investigators will measure the focus of their eyes using a device called a wavefront sensor. This device uses infrared light to measure the optical properties of the eye in real time. Our goal is to find out how well the eye focuses before and after viewing images on a screen up close (25cm). Since many people spend a lot of time looking at a computer screen while at work or at school, it is important to understand how this affects the eye's ability to focus.
Who Is on the Research Team?
Benjamin M Chin, Doctorate
Principal Investigator
Rochester Institute of Technology
Are You a Good Fit for This Trial?
This study is for people who want to help researchers understand how the eyes focus after looking at screens up close. There are no specific inclusion or exclusion criteria listed, so most healthy individuals may be eligible.Inclusion Criteria
Exclusion Criteria
Timeline for a Trial Participant
Screening
Participants are screened for eligibility to participate in the trial
Experimental Sessions
Participants undergo two types of sessions: 'near viewing first' and 'distant viewing first', each lasting 1.5 hours. Each session includes two sets of accommodation tasks.
Follow-up
Participants are monitored for any changes in ocular accommodation after the experimental sessions
What Are the Treatments Tested in This Trial?
Trial Overview
The trial tests how quickly and accurately the eye can refocus after viewing images on a screen up close versus from a distance. Participants will look at moving patterns while their eye focus is measured using a harmless infrared device.
How Is the Trial Designed?
2
Treatment groups
Experimental Treatment
In a given session of the experiment (1.5 hours), participants do 2 sets of accommodation tasks. One task happens after viewing a screen for 20 minutes at 25cm, and the other task happens after looking at a distant object (10m) for 20 minutes. There are two types of sessions: one in which the screen is viewed first ('near viewing first'), and the other in which the distant object is viewed first ('distant viewing first'). All participants do both sessions. However, in one arm, participants do the 'near viewing first' session first.
In a given session of the experiment (1.5 hours), participants do 2 sets of accommodation tasks. One task happens after viewing a screen for 20 minutes at 25cm, and the other task happens after looking at a distant object (10m) for 20 minutes. There are two types of sessions: one in which the screen is viewed first ('near viewing first'), and the other in which the distant object is viewed first ('distant viewing first'). All participants do both sessions. However, in one arm, participants do the 'distant viewing first' session first.
Find a Clinic Near You
Who Is Running the Clinical Trial?
Rochester Institute of Technology
Lead Sponsor
National Eye Institute (NEI)
Collaborator
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