Choroidal thickness in normal Indian eyes using swept-source optical coherence tomography

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dc.contributor.authorBhayana, AAen_US
dc.contributor.authorKumar, Ven_US
dc.contributor.authorTayade, Aen_US
dc.contributor.authorChandra, Men_US
dc.contributor.authorChandra, Pen_US
dc.contributor.authorKumar, Aen_US
dc.date.accessioned2020-04-10T02:02:03Z
dc.date.available2020-04-10T02:02:03Z
dc.date.issued2019-02
dc.description.abstractPurpose: The purpose of this study is to provide normative database for subfoveal choroidal thickness in Indian eyes using swept-source optical coherence tomography. Methods: This is a cross-sectional study based at a tertiary eye care center in Northern India. Two hundred and thirty eight eyes of 119 healthy subjects were examined in terms of axial length, spherical equivalent, and choroidal thickness. Inclusion criteria included age 19� years, no retinal or choroidal disorder, and patients with clear media and good fixation. Patients with high hypermetropia (>4 D) or myopia (>6 D) or any systemic disease likely to affect choroidal thickness were excluded. Twelve radial line scans were obtained centered on the fovea that were used to calculate choroidal and retinal thickness in 9 early treatment diabetic retinopathy study (ETDRS) zones. Results: The mean age of all the subjects was 28.70 � 11.28 years; mean axial length was 23.63 � 1.96 mm, and mean spherical equivalent was ? 0.92 � 3.08 D. The mean subfoveal choroidal thickness was 299.10 � 131.2 ? and mean foveal thickness was 239.92 � 48.16 ?. A negative correlation was found between subfoveal choroidal thickness and age (r = ?0.0961, P = 0.1392) and axial length (r = ?0.3166, P < 0.001). A statistically significant positive correlation was found between subfoveal choroidal thickness and refractive error (r = 0.2393, P = 0.0002). Conclusion: This study provides normative database for subfoveal choroidal thickness and foveal thickness using swept-source optical coherence tomography. The choroidal thickness measured with swept-source platform is slightly higher than that reported with spectral domain platforms.en_US
dc.identifier.affiliationsDr. Rajendra Prasad Centre for Ophthalmic Sciences, All India Institute of Medical Sciences, New Delhi, Indiaen_US
dc.identifier.citationBhayana AA, Kumar V, Tayade A, Chandra M, Chandra P, Kumar A. Choroidal thickness in normal Indian eyes using swept-source optical coherence tomography. Indian Journal of Ophthalmology. 2019 Feb; 67(2): 252-255en_US
dc.identifier.issn0301-4738
dc.identifier.issn1998-3689
dc.identifier.placeIndiaen_US
dc.identifier.urihttps://imsear.searo.who.int/handle/123456789/197108
dc.languageenen_US
dc.publisherAll India Ophthalmological Societyen_US
dc.relation.issuenumber2en_US
dc.relation.volume67en_US
dc.source.urihttps://dx.doi.org/10.4103/ijo.IJO_668_18en_US
dc.subjectChoroidal thicknessen_US
dc.subjectnormal subjectsen_US
dc.subjectnormative dataen_US
dc.subjectswept-source optical coherence tomographyen_US
dc.titleChoroidal thickness in normal Indian eyes using swept-source optical coherence tomographyen_US
dc.typeJournal Articleen_US
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