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Middle East African Journal of Ophthalmology Middle East African Journal of Ophthalmology
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Year : 2018  |  Volume : 25  |  Issue : 1  |  Page : 19-24

Choroidal haller's and sattler's layers thickness in normal Indian eyes

1 Department of Vitreo Retina, Aditya Birla Sankara Nethralaya, Kolkata, West Bengal, India
2 Department of Vitreo Retina, Sankara Nethralaya, Chennai, Tamil Nadu, India

Correspondence Address:
Dr. Rupak Roy
Aditya Birla Sankara Nethralaya, 147, Mukundapur, E.M.Bypass, Kolkata - 700 099, West Bengal
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/meajo.MEAJO_77_17

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AIM: This study aims to study normative choroidal thickness (CT) and Haller's and Sattler's layers thickness in normal Indian eyes. MATERIALS AND METHODS: The choroidal imaging of 73 eyes of 43 healthy Indian individuals was done using enhanced depth imaging feature of spectralis optical coherence tomography. Rraster scan protocol centered at fovea was used for imaging separately by two observers. CT was defined as the length of the perpendicular line drown from the outer border of hypereflective RPE-Bruch's complex to inner margin of choroidoscleral junction. Choroidal vessel layer thickness was measured after defining a largest choroidal vessel lumen within 750 μ on either side of the subfoveal CT vector. A perpendicular line was drawn to the innermost border of this lumen, and the distance between the perpendicular line and innermost border of choroidoscleral junction gave large choroidal vessel layer thickness (LCVLT, Haller's layer). Medium choroidal vessel layer thickness (MCVLT, Sattler's layer) was measured as the distance between same perpendicular line and outer border of hypereflective RPE-Bruch's complex. RESULTS: The mean age of individuals was 28.23 ± 15.29 years (range 14–59 years). Overall, the mean subfoveal CT was 331.6 ± 63.9 μ. Mean LCVLT was 227.08 ± 51.24 μ and the mean MCVLT was 95.65 ± 23.62 μ. CT was maximum subfoveally with gradual reduction in the thickness as the distance from the fovea increased. CONCLUSION: This is the first study describing the choroidal sublayer thickness, i.e., Haller's and Sattler's layer thickness along with CT in healthy Indian population.

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