Diseases of the eye / by M. Stephen Mayou.

  • Mayou, M. Stephen.
Date:
1908
Catalogue details

Licence: In copyright

Credit: Diseases of the eye / by M. Stephen Mayou. Source: Wellcome Collection.

Provider: This material has been provided by The University of Leeds Library. The original may be consulted at The University of Leeds Library.

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    (b) Compound Astigmatism is the form in which one meridian is hypermetropic or myopic, and the other meridian has a greater amount of hypermetropia or + oo _ + 2-5 = 4- 2 of hj'permetropia and myopia. + 3 D of astigmatism axis horizontal. (c) Mixed Astigmatism is the form in which one meri- dian is hypermetropic and the other meridian is myopic. - -50 —h3-5 =:4D of mixed astigmatism. Symptoms.—1. Defective vision ; that is to say, patients with any large amount of astigmatism cannot see -. 6 2. Headaches and other symptoms of asthenopia. 3. Patients may look sideways, so as to diminish the amount of their refractive error in one meridian. Diagnosis.—When vision cannot be brought to the full with spherical glasses, astigmatism should be suspected. Cases of headache associated with low degrees of hypermetropia are frequently