NCT02622191

Analysis of the Eye in Patients With Primary Open-Angle Glaucoma and a Visual Field Defect in One Eye

Segmental Analysis of Retinal Layers and Measurement of Lamina Cribrosa Thickness in Patients With Asymmetric Primary Open-Angle Glaucoma

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 33 (actual)
• Sponsor: Wills Eye · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Accepted

Summary

The study aims to further understand glaucoma pathogenesis and progression by utilizing enhanced depth imaging optical coherence tomography to visualize and measure lamina cribrosa in vivo and segmentation technology to accurately delineate and measure boundaries of the retinal layers. Investigators will elaborate further on key concepts of lamina cribrosa thickness and trans-synaptic degeneration.

Detailed description

Two important areas of the eye that need investigation in order to further understanding of glaucoma. First is the retina (part of the eye that converts images from the eye's optical system into electrical impulses sent along the optic nerve to the brain). Newer technology, Spectral Domain Optical Coherence Tomography (SD-OCT), allows us to look at different layers of the retina and carefully measure thickness of each layer. Second area is lamina cribrosa (a portion of the white part of the eye which has nerve fibers passing through it connecting the eye to the brain). If lamina cribrosa is thin, it is possible it may bend easily and disrupt nerve fibers. SD-OCT allows measurement of lamina cribrosa thickness. Findings will help monitor changes that occur in the eye as a result of glaucoma. Individuals with primary open-angle glaucoma and unilateral visual field defects were chosen as the main patient population (in addition to normal controls). By approximating each participants baseline anatomy using the fellow, "internal control" eye, investigators will be able to better determine if any changes occur in the macula or the lamina cribrosa as a result of glaucoma.

Conditions

• Glaucoma

Interventions

Type	Name	Description
DEVICE	Spectral domain Optical Coherence Tomography	Undilated peripapillary circular optic nerve scans and horizontal and vertical SD-OCT B-scan images centered on the fovea were acquired using Spectralis Heidelberg Retinal Angiography (HRA)+OCT (Heidelberg Engineering GmbH, Heidelberg, Germany).

Timeline

• Start date: 2012-11-01
• Primary completion: 2013-02-01
• Completion: 2013-12-01
• First posted: 2015-12-04
• Last updated: 2019-03-15
• Results posted: 2019-02-27