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  • Title: Rod densitometry in night blindness: a review and two puzzling cases. Rod densitometry in night blindness.
    Author: Keunen JE, Van Meel GJ, Van Norren D.
    Journal: Doc Ophthalmol; 1988; 68(3-4):375-87. PubMed ID: 3042324.
    Abstract:
    Since the non-invasive technque of retinal densitometry became available in 1955, rhodopsin kinetics could be studied in vivo. It was obvious that with this new tool investigators focussed attention on the aetiology of night blindness in various diseases. A brief review about the clinical developments in the past two decades is given. Also three case-reports are presented, which suggest that in some cases of congenital stationary night blindness (CSNB) the night blindness might arise from the absence of rhodopsin. This is contrary to the standing opinion and present problems regarding the integrity of the retina.
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