preferred_name: Type of lens &#x7C; Corrective lens &#x7C; Ophthalmology and Optometry
preferred_name_lc: type of lens &#x7c; corrective lens &#x7c; ophthalmology and optometry
label: Type of lens &#x7C; Corrective lens &#x7C; Ophthalmology and Optometry
label_lc: type of lens &#x7c; corrective lens &#x7c; ophthalmology and optometry