*The Role of Optical Coherence Tomography Angiography in Glaucoma DOI: http://dx.doi.org/10.5772/intechopen.110272*

#### **Figure 5.**

*Comparison of OCTA scans in healthy, glaucoma suspect, and eyes with POAG captured using the RTVue XR Avanti scanner (SSADA algorithm).*

#### **Figure 6.**

*OCTA scans from a non-glaucomatous myopic eye captured using the RTVue XR Avanti scanner (SSADA algorithm).*

density was not decreased between patients with and without HM and could not be used for accurate diagnosis. They recommended that both macular OCTA and OCT imaging may be useful in diagnosing early glaucoma in patients with myopia. Shin et al. showed that peripapillary VD correlated more with VF mean sensitivity than

peripapillary RNFL thickness and peripapillary perfusion density was significantly lower in patients with high myopia [43].

Bowd et al. took a different approach and created a novel *en face* texture-based analysis method to accurately discriminate between highly myopic glaucomatous and healthy eyes using macular tissue thickness measurements [40]. Their success was most likely due to the minimal tissue segmentation required in their approach compared to prior multilayer segmentation methods that often fail in highly myopic eyes. Another method by Yilmaz et al. found that utilizing a myopic normative database for peripapillary RNFL was very helpful in assessing differences in patients with varying degrees of myopia or when glaucoma co-existed with myopia [44]**.** Altogether, these recent works indicate that OCTA technology may improve the accuracy of glaucoma detection in patients with high myopia.
