ORIGINAL ARTICLE |
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Year : 2016 | Volume
: 64
| Issue : 2 | Page : 136-139 |
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Anterior and posterior segment parameters measured with Fourier domain optical coherence tomography in photopic and scotopic conditions
Nishanee Rampersad1, Rekha Hansraj2
1 Discipline of Optometry, University of KwaZulu-Natal, Durban, South Africa 2 Discipline of Optometry, School of Health Sciences, University of KwaZulu-Natal, Durban, South Africa
Correspondence Address:
D r. Rekha Hansraj Discipline of Optometry, School of Health Sciences , University of KwaZulu-Natal, Private Bag X54001, Durban 4000 South Africa
Source of Support: None, Conflict of Interest: None | Check |
DOI: 10.4103/0301-4738.179726
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Purpose: To compare anterior and posterior segment parameters measured with the iVue-100 optical coherence tomography (OCT) in photopic and scotopic conditions. Methods: Central and peripheral corneal thickness, retinal nerve fiber layer and macula thickness were measured using the iVue-100 OCT in 47 healthy individuals at a higher education institution in photopic (958 lux) and scotopic (0.03 lux) conditions. Results: As the lighting conditions changed from scotopic to photopic, a significant change in pupil size was noted (P < 0.001). However, there was no significant difference in central corneal thickness measurements with this change in surrounding illumination with only the temporal peripheral corneal area showing a significant difference (3.44 μm thinner). No significant differences were found in the retinal nerve fiber layer thickness. A significant decrease in the reading was noted in only the inferior (P = 0.05) and temporal (P = 0.05) inner macula area. Conclusion: Change in the ambient lighting conditions does not result in a clinically significant difference in corneal, retinal nerve fiber layer, and macula thickness when measured with the iVue-100 OCT, |
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