ASTIGMATISM

Jack's Reference Book for Home and Office : An Encyclopaedia of General Information: General Information · 1909 · p. 3

a Netect in vision due: pF Bip Sy neat eaih the ch | of the cornea, in consequence rays of light are focu ed on the retina as 13,|/@ diffused spot, It is often the cause of headache, and may be remedied by the use ar | of gui table spectacles. See Med. Did. b0| [s. 55]