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231–232 of 232 articles Page 24 of 24
  1. 5 Apr 2020 20 min read

    Central Serous Choroidopathy

    Introduction Central serous chorioretinopathy (CSC) is one of several chorioretinal disorders characterized by serous detachment of the neurosensory retina and ? or the retinal pigment epithelium (RPE). CSC is one of the 10 most common diseases of the posterior segment of the eye and a frequent cause of mild to moderate visual impairment.1 History of the disease2,3,4,5,6 1866 – Von graefe – first described the disease as recurrent serous retinitis. 1916 – Fuch’s work on the disease was appreciated. 1927 – Horniker – named disease as “Central Angiospastic Retinitis” 1930 – Walsh & Sloane – “idiopathic flat detachment of macula” 1930 – Gifford and Marquardt - Theory on Angioneurotic diathesis. 1953 – Klien – theory on autonomic nervous system dysfunction. 1950’s – Bennett & Maumenee – spectrum of macular disciform degeneration. 1955 – Bennett – “central serous retinopathy” 1960’s – Maumenee and Gass – FA appearance of CSC. 1967 – Gass – “central serous choroidopathy” Definition Active CS

  2. 5 Apr 2020 15 min read

    In Vitro Cataract Classification Systems : A Review

    In early days, since the whole lenses were readily available from intracapsular cataract surgery, so the early systems of cataract classification1,2,3 were developed for use almost exclusively with isolated lenses. These systems were largely qualitative, and they emphasized nuclear color as the index of the severity of cataract formation; lighting systems that improved visualization of cortical and subcapsular morphologic detail had not been developed. Before 1976, lens and cataract research emphasized studies of animal lenses, and researchers erroneously believed these animal lenses to be adequate models of the human lens. In 1976, the CCRG was established to increase understanding of the mechanisms of human cataract formation. One of the CCRG's goals was to establish a lens classification system to help lens researchers study the biochemical and biophysical properties of the cataractous lens and compare them with those of normal lenses. Such a system would facilitate biochemical, bio