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REFRACTION FOR THE PERIPHERAL FIELD OF VISION
Two important reasons might be given for studying the refractive condition of the peripheral field of the eye: ( a ) to study its relation to determinations of acuity in the peripheral field, and ( bExpand
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Refractive Asymmetry in the Temporal and Nasal Halves of the Visual Fiel
This paper is a further study of the refraction in the peripheral field of vision. Objective methods by means of a Zeiss refractionometer were employed. Three types of eyes in regard to peripheralExpand
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LAMP FOR DETERMINATION AND MEASUREMENT OF THE PREFERRED INTENSITY OF LIGHT FOR READING AND FOR OTHER WORK
Two important aspects of clear seeing are clearness of imaging and powers of discrimination of the retina. An increase of intensity of light over a suitable range renders important service inExpand
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The Campperimeter-An Illuminated Perimeter with Campimeter Features.
  • C. Ferree, G. Rand
  • Computer Science, Medicine
  • Transactions of the American Ophthalmological…
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The Effect of Size of Pupil on the Form and Color Fields
Resume Dans cette etude on a fait une determination de l'effet de la grandeur de la prunelle sur les champs de forme et de couleur. On a fait deux divisions de l'etude,—l'une sur les yeux nonExpand
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Studies in Perimetry: 4, Preliminary Work on a Diagnostic Scale for the form Field with a 0.17 Degree Stimulus
Using a stimulus subtending a visual angle of 0.17 degree, the reduction in the field as compared with that obtained for a one-degree stimulus was greater for the presbyopic group of subjects andExpand
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A MORE NEARLY ABSOLUTE METHOD OF TESTING AND RATING VISION
Perhaps the most widely used test of human powers is that of acuity of vision. In proportion as it is widely used there is need to provide a good and as far as possible a foolproof equipment. As theExpand
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