Clinical Trial Details
— Status: Recruiting
Administrative data
NCT number |
NCT04671550 |
Other study ID # |
2020/Glaucoma |
Secondary ID |
|
Status |
Recruiting |
Phase |
|
First received |
|
Last updated |
|
Start date |
November 1, 2020 |
Est. completion date |
December 2021 |
Study information
Verified date |
September 2021 |
Source |
Università degli Studi dell'Insubria |
Contact |
n/a |
Is FDA regulated |
No |
Health authority |
|
Study type |
Observational
|
Clinical Trial Summary
The aim of the study is to identify clinical criteria, easily achievable with patient's
follow-up tests, which can identify individuals at increased risk of being unfit to drive.
Only they, then, will be directed to further investigations. These clinical standards should
also be suitable for implementing or substituting the current law's criteria, after
appropriate additional studies, so that the law can be based on the clinic.
Description:
In this observational study, the investigators recruite patients referred at the Glaucoma
Service of the Ophthalmologic Clinic of the ASST Sette Laghi University Hospital in Varese.
All the patients enrolled in the study require a reliable (less than 15% of false positive or
false negative and no more than 33% of loss of fixation) visual field examination (Humphrey
SITA 24-2 or 30-2 SITA Standard) performed in the previous six months.
All patients undergo a full ophthalmologic examination and verbally submitted a questionnaire
designed by the authors of the paper (LL, SD, MD).
The examination included Visual Acuity, refraction, slit lamp bio-microscospy, Goldmann's
applanation tonometry, gonioscopy with four mirror lens, OCT RNFL and GCL imaging if
necessary and re-evaluation of target IOP.
The investigators use the two monocular visual fields to build an Integrated Visual Field
which, according to D.P. Crabb papers, is an efficient surrogate to the Binocular Esterman
Visual Field Test (EVFT). In short, each point in each monocular field is compared to its
equivalent in the other eye, and the data, from the eye with the best sensitivity, are used.
Locations are dichotomized into groups with sensitivity > 10 dB and < 10 dB, representing
whether a patient would see or miss a point in the Esterman test, respectively. To match even
better the IVF with the EVFT, 8 points of the inner 20° of the IVF were excluded since they
have no direct equivalent in the EVFT.