preferred_name: Corneal vertex distance &#x7C; Eye &#x7C; Refraction
preferred_name_lc: corneal vertex distance &#x7c; eye &#x7c; refraction
label: Corneal vertex distance &#x7C; Eye &#x7C; Refraction
label_lc: corneal vertex distance &#x7c; eye &#x7c; refraction