Department of Optometry, Sushant School of Health Sciences, Sushant University, Gurugram, India
*Corresponding Author: Meenakshi Jha, Department of Optometry, Sushant School of Health Sciences, Sushant University, Gurugram, India.
Received: June 13, 2022; Published: July 08, 2022
Cone rod dystrophies (CRDs) (prevalence 1/40,000) are inherited retinal dystrophies that belong to the group of pigmentary retinopathies. CRDs are characterized by retinal pigment deposits visible on fundus examination, predominantly localized to the macular region. In contrast to typical retinitis pigmentosa (RP), also called the rod cone dystrophies (RCDs) resulting from the primary loss in rod photoreceptors and later followed by the secondary loss in cone photoreceptors, CRDs reflect the opposite sequence of events. CRD is characterized by primary cone involvement, or, sometimes, by concomitant loss of both cones and rods that explains the predominant symptoms of CRDs: decreased visual acuity, color vision defects, photoaversion and decreased sensitivity in the central visual field, later followed by progressive loss in peripheral vision and night blindness.
Citation: Meenakshi Jha. “Cone Rod Dystrophy". Acta Scientific Ophthalmology 5.8 (2022): 05-07.
Copyright: © 2022 Meenakshi Jha. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.