The student's guide to diseases of the eye . gh giving some help, do notremove the defect. If, as is usual, he be presbyopic, 154 CATARACT he will be likely to choose over-strong spectacles, andto place objects too close to his eyes, so as to obtainlarger retinal images (p. 13), and thus compensatefor want of clearness. In nuclear cataract, as theaxial rays of light are most obstructed, sight is oftenbetter when the pupil is rather large, and suchpatients tell us that they see better in a dull light orwith their backs to the window, or when shading theeyes with the hand. In the cortical and mo
The student's guide to diseases of the eye . gh giving some help, do notremove the defect. If, as is usual, he be presbyopic, 154 CATARACT he will be likely to choose over-strong spectacles, andto place objects too close to his eyes, so as to obtainlarger retinal images (p. 13), and thus compensatefor want of clearness. In nuclear cataract, as theaxial rays of light are most obstructed, sight is oftenbetter when the pupil is rather large, and suchpatients tell us that they see better in a dull light orwith their backs to the window, or when shading theeyes with the hand. In the cortical and more dif-fused forms this symptom is less marked. On examining by focal light (after dilating thepupil with atropine) an immature nuclear cataractappears as a yellowish, rather deeply-seated haze,upon which a shadow is cast by the iris on the sidefrom which the light comes (3, Fig. 59). On nowusing the mirror this same opacity appears as adull blur in the area of the red pupil, darkest at thecentre, and gradually thinning off on all sides, so.
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Keywords: ., bookcentury1800, booksu, booksubjecteye, booksubjectophthalmology
