Source:http://linkedlifedata.com/resource/umls/id/C0009836
MSH: Lenses designed to be worn on the front surface of the eyeball. (UMDNS, 1999),CSP: thin lens designed to fit over the cornea and usually worn to correct defects in vision.,UMD: Ophthalmic lens made of glass or plastics, designed to be worn on the front surface of the eye, used for the correction of refractive errors, therapeutic, diagnostic, or cosmetic purposes.