Saccadic movements during an exploratory visual search task in patients with glaucomatous visual field loss
Arq. bras. oftalmol
; Arq. bras. oftalmol;87(3): e2022, 2024. tab, graf
Article
in En
|
LILACS-Express
| LILACS
| ID: biblio-1550037
Responsible library:
BR1.1
ABSTRACT
ABSTRACT Purpose:
To evaluate the saccadic movements of patients with visual field loss due to primary open-angle glaucoma.Methods:
Thirteen patients with good visual acuity (0.2 logMAR or better) (seven patients with primary open-angle glaucoma 65 ± 13 years) and six controls (51 ± 6 years) yielded a comprehensive ophthalmological examination, including Humphrey Visual Field tests (SITA-Standard 24-2), and performed a monocular, exploratory digital visual search task that quantifies the duration for finding the number "4" on a random array of digits distributed on the screen. After individual adjustments of the angle and distance positioning, the screen was spatially matched with the 24-2 visual field, and divided into five areas for analysis. During the task, saccades were simultaneously recorded in the same eye with a video-based eye tracker.Results:
The patients with primary open-angle glaucoma showed a significantly higher number of saccades/screen (median ± interquartile range, 59.00 ± 29.00 vs. 32.50 ± 19.75 saccades (p=0.027) and visual search time per screen (38.50 ± 60.14 vs. 23.75 ± 8.90 seconds (p=0.035) than the controls did. Although the univariate analysis indicated a significant correlation with visual field mean deviation (coefficient=26.19 (p=0.02), only the visual search time/screen was significantly associated with the number of saccades/screen in the multivariate regression model (coefficient=0.55 (p<0.001). Overall, no significant correlation was observed between the sectorial number of saccades and the sensitivity of the five visual field areas.Conclusions:
The patients with primary open-angle glaucoma show impaired search performance and showed a higher number of saccades needed to find stimuli when performing the exploratory visual task.
Full text:
1
Collection:
01-internacional
Database:
LILACS
Language:
En
Journal:
Arq. bras. oftalmol
Journal subject:
OFTALMOLOGIA
Year:
2024
Document type:
Article
Affiliation country:
Brazil
/
United States
Country of publication:
Brazil