Acknowledgements
First of all dear friend Jeroen Boereboom, arbitrarily the greatest fan of Elvis Presley alive, and the one who brought the music as well as the eye problems of the King to my attention. Furthermore, we are indebted to many people for their kind reactions and/or valuable discussions during our quest. This paper does not necessarily reflect their opinions and any mistakes are ours. We thank (not necessarily in order of importance): Joyce Bova, Trevor Cajiao, Jorge Calzada, Michel van Erp, Neil Handley, Elizabeth Hodapp, Sally Hoedel, Suzan Jacobs, Tish Henley Kirk, Lynn Meyer, Robb Meyer, Azing Moltmaker, Spencer Leigh, Donna Presley, Bruce Shields, Marijn Vis, and - last but not least - Eric van Rooij.
Disclosure statement
No potential conflict of interest was reported by the author(s).
Ethical statement
The medical data in this paper is derived from public sources, so there is no violation of medical confidentiality. Additionally, family members of Elvis Presley are protected from public exposure and are not accessible for seeking consent.