phacoscopen.
/ˈfakəskəʊp/, U.S. /ˈfækəˌskoʊp/ Ophthalmology. rare.
A device for observing changes in shape of the lens of the eye during accommodation.
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the world > health and disease > healing > ophthalmology or optometry > [noun] > instrumental examination or measurement of eye > instruments used in
optometer1738
opsiometer1842
ophthalmoscope1856
auto-ophthalmoscope1863
ophthalmometer1864
phacoidoscope1864
strabismometer1869
autoscope1873
strabometer1874
perimeter1875
leucoscope1883
retinoscope1883
phacoscope1886
phorometer1888
campimeter1889
prisoptometer1890
scotometer1890
skiascope1892
transilluminator1906
slit lamp1922
anomaloscope1923
gonioscope1925
synoptophore1934
1886 Proc. Royal Soc. 40 481 Stimulation of the track followed by the cervical sympathetic in the neck gives rise to no alteration in the ciliary muscle, observed by the images on the anterior surface of the lens seen through the phakoscope.
1926 Sci. Monthly Apr. 374 By means of the ophthalmometer and the phakoscope, which he invented, Helmholtz obtained many data on the eye.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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n.1886