Clinical trial NCT02862158: Frequency Doubling Technology (FDT) Mobile Visual Field Testing
Official title: Evaluation of Different Frequency Doubling Technology (FDT) Mobile Devices for Visual Field Assessment
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: NA
Conditions: Glaucoma
Lead sponsor: University of Miami
Sponsor class: OTHER
First posted: 2016-08-10
Enrollment: 500
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: no
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: DIAGNOSTIC

Brief summary: This is a single center, prospective study to evaluate the efficacy and reproducibility of frequency doubling technology (FDT)-based visual field devices compared to conventional Humphrey Visual Field (HVF) perimetry. The investigators plan to enroll 500 patients in this study.

Detailed description: Glaucoma is a leading cause of irreversible and preventable blindness world-wide. Insufficient evidence exists to support routine screening for glaucoma in a primary care setting due to the relatively low prevalence of the disease (Guirguis-Blake, 2005 and Moyer, 2013). Frequency doubling technology (FDT)-based perimetry is a relatively inexpensive and portable visual field testing device with a short testing time that has shown reasonable efficacy, sensitivity and specificity in screening for glaucoma in clinic- and community-based settings (Mansberger, 2005 and Nomoto 2009).

The aim of our study is to compare the efficacy and reproducibility of FDT perimetry platforms compared with Humphrey Visual Field (HVF) perimetry (which is the gold clinical standard in clinics and hospitals) in detecting glaucomatous visual field defects.

Eligibility criteria: Inclusion Criteria:

* Adult patients (18 and over) who speak English, Spanish or Creole, and are capable of providing informed consent and who have a Humphrey Visual Field (HVF) test within the prior the 6 months preceding enrollment are eligible for enrollment in this non-invasive study. Patients will be recruited from among patients at the Bascom Palmer Eye Institute clinics during their regularly scheduled clinic visits. No advertising will be used to recruit patients.

Exclusion Criteria:

* Adults unable to consent, individuals who are not yet adults (infants, children and teenagers), pregnant women and prisoners and other vulnerable populations will be excluded from the study.

Primary outcomes:
measure: Pattern of visual field loss in FDT visual fields as compared with standard HVF
timeFrame: The investigators anticipate to enroll the subjects over a period of 12 months. The estimated time required for data analysis is 6 months following enrollment of all subjects.
Secondary outcomes:
measure: Mean deviation (MD) in FDT visual fields as compared with standard HVF
timeFrame: The investigators anticipate to enroll the subjects over a period of 12 months. The estimated time required for data analysis is 6 months following enrollment of all subjects.
measure: Pattern standard deviation (PSD) in FDT visual fields as compared with standard HVF
timeFrame: The investigators anticipate to enroll the subjects over a period of 12 months. The estimated time required for data analysis is 6 months following enrollment of all subjects.
Other outcomes:
Locations:
city: Miami
country: United States
facility: Bascom Palmer Eye Institute, University of Miami Miller School of Medicine
state: Florida
Study officials:
affiliation: University of Miami / Bascom Palmer Eye Institute
name: Richard Lee, MD, PhD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Guirguis-Blake J. Rationale for the USPSTF recommendation on screening for glaucoma. Am Fam Physician. 2005 Oct 1;72(7):1184, 1187. No abstract available.
citation: Moyer VA; U.S. Preventive Services Task Force. Screening for glaucoma: U.S. Preventive Services Task Force Recommendation Statement. Ann Intern Med. 2013 Oct 1;159(7):484-9. doi: 10.7326/0003-4819-159-6-201309170-00686.
citation: Mansberger SL, Johnson CA, Cioffi GA, Choi D, Krishnadas SR, Srinivasan M, Balamurugan V, Kim U, Smith SD, Wilkins JH, Gritz DC. Predictive value of frequency doubling technology perimetry for detecting glaucoma in a developing country. J Glaucoma. 2005 Apr;14(2):128-34. doi: 10.1097/01.ijg.0000151883.07232.54.
citation: Nomoto H, Matsumoto C, Takada S, Hashimoto S, Arimura E, Okuyama S, Shimomura Y. Detectability of glaucomatous changes using SAP, FDT, flicker perimetry, and OCT. J Glaucoma. 2009 Feb;18(2):165-71. doi: 10.1097/IJG.0b013e318179f7ca.