**Author details**

*A Practical Guide to Clinical Application of OCT in Ophthalmology*

hyper-reflective material around Bowman's layer causing shadowing in the poste-

*(A, B, C) AS-OCT evaluation from the same patient of Figure 20. There is a hyper-reflective zone in the* 

*(A, B) AS slit-lamp evaluation showing calcium deposition in the superficial cornea of a patient with band*

The calcium deposition can result in a loss of visual acuity. The aim of the surgical techniques will be to restore the corneal transparency. AS-OCT imaging can help to decide the optimal surgical technique as the scans show the depth of the

AS-OCT imaging is a useful technique that helps physicians to achieve a correct diagnosis and a proper management of the corneal pathologies. Probably, it will become an essential device in the anterior segment disease assessment, as it has occurred in the posterior segment. It is necessary to recognize the AS-OCT specific optical signs of the corneal degenerations, to decide the best therapeutic choice. The

rior cornea stroma [3, 29, 30] (**Figures 20** and **21**).

*calcium deposition areas causing shadows in the corneal stroma below the lesions.*

**34**

lesions [28].

**Figure 21.**

**Figure 20.**

*keratopathy.*

**5. Conclusions**

Constanza Caramello Álvarez1,2\*, María A. del Buey1,2, Paula Casas1,2, Sara Marco1,2, Enrique Mínguez1,2 and Francisco J. Ascaso1,2

1 Department of Ophthalmology, Hospital Clínico Universitario "Lozano Blesa", Zaragoza, Spain

2 Aragon Health Research Institute (IIS Aragon), Zaragoza, Spain

\*Address all correspondence to: coni\_86@hotmail.com

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
