A case of tobacco amblyopia presenting unusual defects in the visual fields : and a case of optic atrophy complicating beri-beri / by F. O'Kinealy.

  • O'Kinealy, F.
Date:
[1901]
Catalogue details

Licence: In copyright

Credit: A case of tobacco amblyopia presenting unusual defects in the visual fields : and a case of optic atrophy complicating beri-beri / by F. O'Kinealy. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

    2/10 (page 2)
    The first s^^mjitoms noticed were '* red spots before tlie eyes, accompanied by lacliryination, haziness of vision and pain. His sight im- proved for about three months with the aid of glasses, but gradually relapsed, till by the middle of November 1900 he could not read print, though still able to decipher manuscript. Since then his vision has heen slowly deteriorating, though he has lately diminished his smoking. Beyond cataract, from which his father is said to be suffering, and the <leath of a sister from supposed kidney disease, there is nothing suggestive of ocular troubles in his family history. Condition on admission.—The patient looks health)', and 110 abnoriuiility, other than his vi-ual defect, can be discovered. Ophthalmic examination—Eyelids and extrinsic mus- cles healthy, and moving normally on both sides. T. ii. Conjunctivije ; corn^B and anterior chambers natural Aqueous clear. Irides healthy, pupils round equal, and reacting normally to light and accommodation. Ophthalmoscopically : media clear, ol)tic discs healthy, and fundi normal. V = i'V imperfectly, and Jaegar 18 with difficulty in each eye, not improved ; no astigmatism Vision better in half lights And red object on a green ground appears black when seen at a distance. No apparent congenital colour-blindness. The Visual Fields, examined with test objects Icm. square, shew the following defects :—The Right Field (Fig I) is contracted outwards for white, red and blue, as well as below for tlie two latter colours. Green is not distinguisshed as such anywhere in the field, except so occasionally and doubtfully at the fixation point that the area cannot be mapped out ; it is called ' yellow or white or red'' indiscriminately. Yellow is alao indistinguishable and is described as light red throughout the field, There are two scotomata for red and blue , the larger fan shaped and situated in the upper and inner quadrant, the smaller extending from around the fixation point