Loss of sight from disuse of the eye (amblyopia ex anopsia) / by D.B. St. John Roosa.

  • Roosa, D. B. St. John (Daniel Bennett St. John), 1838-1908.
Date:
[1905]
Catalogue details

Licence: In copyright

Credit: Loss of sight from disuse of the eye (amblyopia ex anopsia) / by D.B. St. John Roosa. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

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    tice, and of the cases where amblyopia has actually occurred after the’squint, it has been said, not so long ago, by no less an authority than Priestly Smith, “there is little evidence to show that an eye Fig. Retina of a Newborn Child. All the histological elements are fully developed. From a photomicrograph, by Dr. E. L. Oatman. Obj. i, Oc. 1. A, Retina; B, choroid; C, sclera. Principal layers: a, nerve fiber; b, ganglion cell c, internal reticular; d. internal granular; e, external reticular; f, Henle’s fibers; g, external granular; h, external limiting; *, rods and cones; j, pigment. which has once acquired good vision, can lose it by squinting.” 1 It is in the very nature of things im- possible to produce many such cases, but even one, and I, myself, have reported long since one, is enough to show that many more exist.