A probationary surgical essay on amaurosis : submitted ... to the examination of the Royal College of Surgeons of Edinburgh, ... / by Alexander Tweedie.

  • Alexander Tweedie
Date:
1817
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Licence: Public Domain Mark

Credit: A probationary surgical essay on amaurosis : submitted ... to the examination of the Royal College of Surgeons of Edinburgh, ... / by Alexander Tweedie. Source: Wellcome Collection.

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    cious, as little information can be derived from the general appearance of the eyeball itself, no very obvious deviation from its natural structure being perceptible. The disease is sometimes confined to one eye, but both are generally affected at the same time. At first the patient experiences some degree of dimness of vision, as if objects were not sufficiently illuminated, or as if viewed through a cloudy medium ; black spots, films, and sparks of fire appear occasionally to float in the atmosphere ; and in advanced cases, the outlines of large objects or bright colours only are perceptible. In some cases these symptoms are accompa¬ nied with double vision, and in other instances, only one-half or part of an object is observed by the patient. These symptoms are often combined with sensation of stricture in the eyeball, more or less of general headach, and pain about the forehead and temples. When the eye itself is examined, the pupil in the majority of cases appears larger than usual,
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