On the morbid sensibility of the eye : commonly called weakness of sight.

  • Stevenson, John, 1778-1846?
Date:
1815
Catalogue details

Licence: Public Domain Mark

Credit: On the morbid sensibility of the eye : commonly called weakness of sight. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    id proportion to the degree of their expansion, ;md the sensibility of the organ ? That genuine weakness of sight is actually a disease of the retina, arising from the great turgcscency or chronic inflammation of that membrane, is rendered still more probable iVom the fact, that a great aversion to light, (though not particularly noticed by all au- thors on the subject) is amongst the earliest symptomsof Hydrocephalus internus; which is well ascertained to proceed from an in- dainmation of the ventricles of the brain, fro in whence the origin of the optic nerves is derived. And besides, there is not at that • aily'period of the latter disease, any exter- nal Opthalmia, or visible fulness of the ves- selsof the conjunctiva; which circumstances, make the analogy between the cause of the above named symptoms, in the two com- plaints, very striking and satisfactory. Let us further observe, that an intolerance of light frequently succeeds to the operation for the extraction of cataract. Is not this svmptom owing to an insidious chronic in*