the world > health and disease > healing > ophthalmology or optometry > [noun] > kinds of eye-test > card used in testing sight
test card1892
test chart1910
1910 H. C. ParkerHandbk. Dis. Eye v. 62 (caption) Test chart for illiterates.
1978 J. ParrIntrod. Ophthalmol.ii. 64 If a subject's visual acuity is less than 6/60 the distance from the test chart can be progressively reduced down to 1m.