Square cardboard chart demonstrating light test for astigmatism in case of paralysis of left internal rectus 1891-1920
Square cardboard chart demonstrating light test for astigmatism in case of paralysis of left superior rectus 1891-1920
Square cardboard chart demonstrating light test in case of paralysis of right superior rectus 1891-1920
Square cardboard chart demonstrating light test for astigmatism in case of paralysis of right internal rectus 1891-1920
Square cardboard chart demonstrating light test in case of paralysis of right external rectus 1891-1920
Square cardboard chart demonstrating light test for astigmatism in case of paralysis of right inferior rectus 1891-1920
Square cardboard chart demonstrating light test for astigmatism in case of paralysis of left external rectus 1891-1920
Square cardboard chart demonstrating light test in case of paralysis of right superior oblique 1891-1920
Square cardboard chart demonstrating light test for astigmatism in case of paralysis of left superior oblique 1891-1920