Correction to: Retinal oximetry and fractal analysis of capillary maps in sickle cell disease patients and matched healthy volunteers (Graefe's Archive for Clinical and Experimental Ophthalmology, (2019), 10.1007/s00417-019-04458-0)

CORRECTION

Correction to: Retinal oximetry and fractal analysis of capillary maps

in sickle cell disease patients and matched healthy volunteers

W. A. J. Birkhoff

_{L. van Manen}

_{J. Dijkstra}

_{M. L. De Kam}

_{J. C. van Meurs}

_{A. F. Cohen}

# Springer-Verlag GmbH Germany, part of Springer Nature 2019

Correction to: Graefe’sArchiveforClinicalandExperimental

Ophthalmology

https://doi.org/10.1007/s00417-019-04458-0

There is an error in the original publication of this paper.

In the published online PDF version, Figure 3 was incorrectly

captured the same as Figure 1.

The original article has been corrected.

The online version of the original article can be found athttps://doi.org/

10.1007/s00417-019-04458-0 * W. A. J. Birkhoff

WBirkhoff@CHDR.nl 1

Centre for Human Drug Research, Zernikedreef 8, 2333, CL Leiden, the Netherlands

2 _{Leiden University Medical Center, Leiden, the Netherlands}

3

Oogziekenhuis Rotterdam, Rotterdam, the Netherlands

4 _{ErasmusMC, Rotterdam, the Netherlands}

Graefe's Archive for Clinical and Experimental Ophthalmology https://doi.org/10.1007/s00417-019-04512-x

Whole Big Vessels

Whole Small Vessels 0.5 1.0 1.5 2.0 All vessels Inferior nas al Inferior t emporal Superior nasa l Superior t emporal 1.4 1.6 1.8 2.0

Quadrant Dbox for Small Vessel

Sickle cell patients Matched controls (0.6-1 .1) (1.1-1 .6) (1.6-2.1) (2.1-2.6) (2.6-3 .1) (3.1-3.6) Annular zone (mm)

Sickle cell patients Matched controls

Fractal Dimension (Dbox) Fractal Dimension (Dbox)

Circle Dbox for Small Vessel

1.4 1.5 1.6 1.7

Fractal Dimension (Dbox) _1.3 Fig. 3 Vessel density expressed

in Dbox values for all vessels (a), small vessels in different quadrantal zones (b), and annular zones (c) image processing of nCPMs