**Author details**

Yunhee Lee1 , Eun Jung Ahn<sup>2</sup> and Ali Hussain3 \*

1 AltRegen Co., Ltd. 12 Bongeunsa-ro 47-gil, Seoul, Republic of Korea

2 Daehakro Seoul Eye Clinic, Seoul, Republic of Korea

3 Department of Ocular Biology and Therapeutics, UCL Institute of Ophthalmology, London, UK

\*Address all correspondence to: alyhussain@aol.com

© 2021 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.
