Reply




We really appreciate the comments regarding the differences between ethnicities, as Tan and associates indicated. Ethnicity should be taken into consideration depending on the working place; and, as the authors reflect, there are important differences between Chinese and white populations. Choroidal thickness and volume have been established in young adults, as well as the accuracy of the measurements performed by enhanced-depth imaging spectral-domain optical coherence tomography. It has been reported that choroidal thickness in healthy adults decreases with age, level of myopia, and axial length. Regarding differences between the regions across the posterior pole, choroidal thickness has been found to be thinnest in the nasal and inferior regions. The mean subfoveal choroidal thickness in healthy adults has been reported to be different among ethnic groups. Although healthy adults’ choroidal thickness has been thoroughly investigated, studies on choroidal thickness in pathologic or pediatric populations are limited. Normative databases are still needed, and we are working on it.


References



  1. 1. Sanchez-Cano A., Orduna E., Segura F., et al: Choroidal thickness and volume in healthy young white adults and the relationships between them and axial length, ammetropy and sex. Am J Ophthalmol 2014; 158: pp. 574-583.e1

  2. 2. Margolis R., and Spaide R.F.: A pilot study of enhanced depth imaging optical coherence tomography of the choroid in normal eyes. Am J Ophthalmol 2009; 147: pp. 811-815

  3. 3. Barteselli G., Chhablani J., El-Emam S., et al: Choroidal volume variations with age, axial length, and sex in healthy subjects: A three-dimensional analysis. Ophthalmology 2012; 119: pp. 2572-2578

  4. 4. Ikuno Y., Kawaguchi K., Nouchi T., and Yasuno Y.: Choroidal thickness in healthy Japanese subjects. Invest Ophthalmol Vis Sci 2010; 51: pp. 2173-2176

  5. 5. Ding X., Li J., Zeng J., et al: Choroidal thickness in healthy Chinese subjects. Invest Ophthalmol Vis Sci 2011; 52: pp. 9555-9560

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Jan 7, 2017 | Posted by in OPHTHALMOLOGY | Comments Off on Reply

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