To validate a new virtual reality (VR) based visual field test against the gold standard clinical perimetry test (Humphrey Visual field test 24-2).
Perimetry (or visual field testing) is a vision test used to evaluate a patient's peripheral vision. It involves a patient fixating on a central target and pressing a button when they see a spot of light in their peripheral vision. It is an important way of deciding whether Glaucoma is progressing or not. Next generation virtual reality (VR) technologies offer an exciting new way of conducting perimetry in either a clinical or home environment, allowing more affordable and more frequent monitoring of disease progression in glaucoma, and an easier and more comfortable experience for patients. The investigators propose to create a perimetry test using a commercially available head mounted display for VR, and to assess its accuracy in glaucoma patients in relation to standard automated perimetry.
Study Type
OBSERVATIONAL
Enrollment
30
Glaucoma patients at Queen's University, Belfast, will be invited to undergo both Visual field testing using the Oculus Rift and the gold-standard Humphrey 24-2 (Carl Zeiss Meditec, Dublin, CA) at two visits, and evaluating consistency for detecting visual field impairments.
Glaucoma patients at Queen's University, Belfast, will be invited to undergo both Visual field testing using the Oculus Rift and the gold-standard Humphrey 24-2 (Carl Zeiss Meditec, Dublin, CA) at two visits, and evaluating consistency for detecting visual field impairments.
NI Clinical Research Facility
Belfast, Northern Ireland, United Kingdom
RECRUITINGmean deviation (MD)
Mean deviation in decibels (dB), this is a standard summary measure generated by all perimetric tests and is considered to represent generalised loss of visual function.
Time frame: All statisitcal analysis will take place once all data collection has ended, average 1 year..
Pattern Standard Deviation
Pattern standard deviation in decibels (dB), this is a standard summary measure generated by all perimetric tests and is considered to represent localised loss of visual function.
Time frame: All statisitcal analysis will take place once all data collection has ended, average 1 year..
Repeatbility of both devices
Bland and Altman plots and intra-class correlation coefficients will be generated for both tests for visit 1 vs visit 2 data.
Time frame: All statisitcal analysis will take place once all data collection has ended, average 1 year..
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