1 Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom (R.H.).
2 University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom (V.W.).
3 Bristol Royal Hospital for Children, University Hospitals Bristol NHS Foundation Trust, Bristol, United Kingdom (A.L.).
4 Bristol Eye Hospital, University Hospitals Bristol NHS Foundation Trust, and Bristol Medical School, University of Bristol, Bristol, United Kingdom (D.A.).