> as lemmas
omnifocal
omnifocal adj. and n. 
/ˌɑmniˈfoʊk(ə)l/ Ophthalmology (now rare) (a) adj. designating a lens whose power changes continuously from top to bottom (cf. varifocal adj. b); (b) n. an omnifocal lens.
Brit. /ˌɒmnᵻˈfəʊkl/
, /ˌɒmnᵻˈfəʊkl/U.S. /ˌɑmnəˈfoʊk(ə)l/
, /ˌɑmnəˈfoʊk(ə)l//ˌɑmniˈfoʊk(ə)l/ΘΚΠ
the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [adjective] > types of spectacles > types of spectacle lens
astigmatic1881
toric1890
trifocal1921
multifocal1928
pebble-grained1943
omnifocal1962
the world > health and disease > healing > ophthalmology or optometry > aids to defective vision > [noun] > spectacles > lens of spectacles > types of
pebble1688
distance lens1907
omnifocal1962
toric1962
varifocal1975
1962 Jrnl. Amer. Med. Assoc. 19 May 595 (heading) The omnifocal lens for presbyopia.
1962 Arch. Ophthalmol. 68 777/1 Omnifocals are used binocularly but are effective monocularly in cases where only one eye can be used.
1974 Year Bk. Ophthalmol. 38 Three types of lens included..Varilux, Zoom and Omnifocal.
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