A lensmeter a i ʻole lensometer, i ʻike ʻia he focimeter a i ʻole vertometer, he mea hana ophthalmic.Hoʻohana nui ʻia ia e nā optometrists a me opticians e hōʻoia i ka ʻōlelo kuhikuhi pololei i loko o nā maka aniani, e hoʻonohonoho pono a hōʻailona i nā lens i ʻoki ʻole ʻia, a e hōʻoia i ka kau ʻana o nā lens ma nā kiʻi aniani.