Vision Disorders
Conditions
Keywords
Band Atrophy, Optical Coherence Tomography, Scanning Laser Polarimetry, Chiasmal Lesions
Brief summary
The study is designed to evaluate the ability of optical coherence tomography and VCC scanning laser polarimetry to measure and identify the pattern of band atrophy of the optic nerve in patients with long standing chiasmal lesions. The hypothesis is that these new technologies are able to identify such pattern. The idea is that by using eyes with band atrophy one is able to investigate the ability of the new technologies in measuring the retinal nerve fiber layer particularly in the nasal and temporal portions of the optic nerve.
Interventions
DEVICERetinal nerve fiber layer and macular thickness measurements
Sponsors
Fundação de Amparo à Pesquisa do Estado de São Paulo
University of Sao Paulo
Study design
Allocation
NON_RANDOMIZED
Intervention model
PARALLEL
Primary purpose
DIAGNOSTIC
Masking
NONE
Eligibility
Sex/Gender
ALL
Age
18 Years to 70 Years
Healthy volunteers
Yes
Inclusion criteria
Patients with long standing chiasmal lesions and temporal visual field defect with the following criteria: 1. Visual acuity better than 20/30 2. Refractive error less 5 spherical diopter and 3 cylinder diopter 3. Temporal field defect
Exclusion criteria
1. Presence of glaucoma and optic nerve anomalies 2. Anormal nasal field
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Retina nerve fiber layer measurements | — |
| Macular thickness measurements | — |
Outcome results
None listed