Robert O'Brien

Dr. Robert O'Brien

orcid

Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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14 August 2023 in Journal of Glaucoma
Verified
Journal Article
Open access
DMDanielle E. McLaughlin
Danielle E. McLaughlin
ESEleonore Savatovsky
Eleonore Savatovsky
RORobert O'Brien
Robert O'Brien
EVElizabeth A. Vanner
Elizabeth A. Vanner
HMHounsh K. Mscti Munshi
Hounsh K. Mscti Munshi
AGAlana L. Grajewski
Alana L. Grajewski
Précis: Monitoring visual fields (VFs) through virtual reality devices proved to have good inter-test and test-retest reliability, as well as easy usability, when self-administered by individuals with and without VF defects in a remote setting. Purpose: To assess the reliability of remote, self-administered VF monitoring using a virtual reality VF (VRVF) device in individuals without ocular disease and with stable VF defects. Materials and Methods: Individuals without ocular disease and with stable defects were recruited. All participants had a baseline standard automated perimetry (SAP) test. Participants tested remotely on a VRVF device for 4 weeks (examinations V1, V2, V3, and V4), with the last 3 unassisted. The mean sensitivities of VRVF results were compared with each other and to SAP results for reliability. Results: A total of 42 eyes from 21 participants were tested on the VRVF device. Participants tested consistently although external factors impacted outcomes. VRVF results were in reasonable agreement with the baseline SAP. Examinations performed by the cohort with stable defects evinced better agreement with SAP examinations (V2, P = 0.79; V3, P = 0.39; V4, P = 0.35) than those reported by the cohort without ocular disease (V2, P = 0.02; V3, P = 0.15; V4, P = 0.22), where the null hypothesis is that the instruments agree. Fixation losses were high and variable in VRVF examinations compared with those of SAP, particularly in certain test takers. Participants considered the device comfortable and easy to use. Conclusions: Self-administered, remote VF tests on a VRVF device showed satisfactory test-retest reliability, good inter-test agreement with SAP, and acceptability by its users. External factors may impact at-home testing and age and visual impairment may hinder fixation. Future studies to expand the sample size and understand inconsistencies in fixation losses are recommended.

27 June 2024 in American Journal of Ophthalmology
Verified
Journal Article
Closed access
ABAlessandro Berni
Alessandro Berni
MSMengxi Shen
Mengxi Shen
YCYuxuan Cheng
Yuxuan Cheng
GHGissel Herrera
Gissel Herrera
FHFarhan Hiya
Farhan Hiya
PRPhilip J. Rosenfeld
Philip J. Rosenfeld

18 April 2024 in Ophthalmology Retina
Verified
Journal Article
Closed access
PRPhilip J. Rosenfeld
Philip J. Rosenfeld
MSMengxi Shen
Mengxi Shen
OTOmer Trivizki
Omer Trivizki
JLJeremy Liu
Jeremy Liu
GHGissel Herrera
Gissel Herrera
RWRuikang K. Wang
Ruikang K. Wang

19 February 2025 in American Journal of Ophthalmology
Verified
Journal Article
Closed access
JGJason A. Greenfield
Jason A. Greenfield
RSRafael Scherer
Rafael Scherer
DADiego Alba
Diego Alba
SASofia De Arrigunaga
Sofia De Arrigunaga
OAOsmel Alvarez
Osmel Alvarez
CKCarol L Karp
Carol L Karp

6 July 2025 in American Journal of Ophthalmology
Verified
Journal Article
Closed access
OEOmar S. El-Mulki
Omar S. El-Mulki
ABAlessandro Berni
Alessandro Berni
JKJames Kastner
James Kastner
MSMengxi Shen
Mengxi Shen
YCYuxuan Cheng
Yuxuan Cheng
PRPhilip J. Rosenfeld
Philip J. Rosenfeld

5 September 2025 in American Journal of Ophthalmology
Verified
Journal Article
Closed access
MSMengxi Shen
Mengxi Shen
ABAlessandro Berni
Alessandro Berni
JLJeremy Liu
Jeremy Liu
FHFarhan Hiya
Farhan Hiya
GHGissel Herrera
Gissel Herrera
PRPhilip J. Rosenfeld
Philip J. Rosenfeld