Choroidal Thickness and Volume in Healthy Young White Adults and the Relationships Between Them and Axial Length, Ammetropy and Sex

Abstract

We read with interest the article by Sanchez-Cano and associates, 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: 574-583.e1 Abstract Full Text Full Text PDF PubMed Scopus (82) Google Scholar which evaluated choroidal thickness in young adults using enhanced-depth imaging spectral-domain optical coherence tomography (OCT), and we agree that a normative database is important to facilitate comparisons of choroidal thicknesses among patients with ocular disease. It is increasingly evident that the choroid plays important roles both in normal physiology and in ocular diseases, 2 Tan C.S. Ouyang Y. Ruiz H. Sadda S.R. Diurnal variation of choroidal thickness in normal, healthy subjects measured by spectral domain optical coherence tomography. Invest Ophthalmol Vis Sci. 2012; 53: 261-266 Crossref PubMed Scopus (572) Google Scholar , 3 Tan C.S. Cheong K.X. Lim L.W. Li K.Z. Topographic variation of choroidal and retinal thicknesses at the macula in healthy adults. Br J Ophthalmol. 2013; 98: 339-344 Crossref PubMed Scopus (91) Google Scholar , 4 Tan C.S. Cheong K.X. Macular choroidal thicknesses in healthy adults–relationship with ocular and demographic factors. Invest Ophthalmol Vis Sci. 2014; 55: 6452-6458 Crossref PubMed Scopus (70) Google Scholar the study of which will be greatly facilitated by enhanced-depth imaging and the new swept-source OCT devices. 5 Tan C.S. Ngo W.K. Cheong K.X. Comparison of choroidal thicknesses using swept source and spectral domain optical coherence tomography in diseased and normal eyes. Br J Ophthalmol. 2014; https://doi.org/10.1136/bjophthalmol-2014-305331 Crossref Scopus (89) Google Scholar Choroidal Thickness and Volume in Healthy Young White Adults and the Relationships between them and Axial Length, Ammetropy and SexAmerican Journal of OphthalmologyVol. 158Issue 3PreviewTo evaluate choroidal thickness in young adults using enhanced-depth imaging spectral-domain optical coherence tomography and to describe volume differences in all the areas defined in the Early Treatment Diabetic Retinopathy Study. Full-Text PDF ReplyAmerican Journal of OphthalmologyVol. 159Issue 4PreviewWe 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. Full-Text PDF