Changes

*Okuvision and Retina Implant merge together under the parent company Retina Implant AG. [[https://www.retina-implant.de/en/news/02022017-02022017-we-have-moved/ Retina Implant AG], February 2017]

*NIDEK -- Two Sister Companies Merge to Combine Efforts in U.S. Ophthalmic Industry. [[https://globenewswire.com/news-release/2005/10/13/334767/87801/en/NIDEK-Two-Sister-Companies-Merge-to-Combine-Efforts-in-U-S-Ophthalmic-Industry.html Globenewswire], October 2005]