Dr. Raja Narayanan

Director and Network Head, Clinical Research , L V Prasad Eye Institute

1 article

Raja Narayanan is currently the Director and Network Head, Clinical Research at L V Prasad Eye Institute and Head, Operations and Systems, Kallam Anji Reddy campus and Kode Venkatadri Chowdary campus. He completed his basic medical education from Delhi University, followed by a Master of Surgery in ophthalmology from Guru Nanak Eye Center, New Delhi. He underwent a preceptorship in uveitis, ocular immunology and uveitis service at the Massachusetts Eye and Ear Infirmary, Harvard Medical School, Boston, USA. He was a Fellow in Medical Retina, and Clinical and Research Fellow in Vitreo-Retinal Diseases, at the Department of Ophthalmology, University of California, Irvine, USA. He has received the Sir Ratan Tata Fellowship in cataract surgery from Sankara Nethralaya, Medical Research Foundation, Chennai. He was also Visiting Faculty at the University of California and Visiting Scholar at the Massachusetts Eye and Ear Infirmary, Boston. He is currently Adjunct Associate Professor of Ophthalmology at the University of Rochester, New York. He did his M.B.A. in 2011. He received the Senior Honor Award from the American Society of Retina Specialists in 2015, and International Ophthalmologist Education Award at the 2007 American Academy of Ophthalmology meeting, New Orleans. He has published widely in peer-reviewed journals, written book chapters and is a reviewer for many journals such as Investigative Ophthalmology & Visual science, Retina, Journal of Cataract and Refractive Surgery, Archives of Ophthalmology, European Journal of Ophthalmology and Current Eye Research. He is on the Editorial Board of PLOS ONE and International Journal of Retina and Vitreous.

  1. Articles 1 Apr 2021 19 min read

    Angioid Streaks

    Angioid streaks are visible irregular crack-like dehiscences in Bruch’s membrane that are associated with atrophic degeneration of the overlying retinal pigmented epithelium. Despite 50 % of cases being idiopathic, this condition grabs attention as it requires good history taking and workup to determine the cause. Historical background The first description of angioid streaks was provided in 1889 by Dr. Robert W. Doyne, an English ophthalmologist. He noticed irregular, jagged deeply pigmented lines especially around the discs of both eyes in a patient who sustained trauma in both eyes and attributed it to be due to the rupture of pigment layer of retina. [1] Because of their resemblance to blood vessels, Herman J. Knapp, a German-born American ophthalmologist coined and introduced the term "angioid streaks" in 1892. [2] They are also known as Knapp’s striae. Clinical examination with histopathological findings by Bock in 1938 in two patients with pseudoxanthoma elasticum confirmed that