The retina is the innermost, light-sensitive layer of tissue of the eye of most vertebrates and some molluscs. The optics of the eye create a focused two-dimensional image of the visual world on the retina, which then processes that image within the retina and sends nerve impulses along the optic nerve to the visual cortex to create visual perception. The retina serves a function which is in many ways analogous to that of the film or image sensor in a camera.
Ophthalmology is a surgical subspecialty within medicine that deals with the diagnosis and treatment of eye disorders.
Retinopathy is any damage to the retina of the eyes, which may cause vision impairment. Retinopathy often refers to retinal vascular disease, or damage to the retina caused by abnormal blood flow. Age-related macular degeneration is technically included under the umbrella term retinopathy but is often discussed as a separate entity. Retinopathy, or retinal vascular disease, can be broadly categorized into proliferative and non-proliferative types. Frequently, retinopathy is an ocular manifestation of systemic disease as seen in diabetes or hypertension. Diabetes is the most common cause of retinopathy in the U.S. as of 2008. Diabetic retinopathy is the leading cause of blindness in working-aged people. It accounts for about 5% of blindness worldwide and is designated a priority eye disease by the World Health Organization.
Diabetic retinopathy, is a medical condition in which damage occurs to the retina due to diabetes mellitus. It is a leading cause of blindness in developed countries.
Hypertensive retinopathy is damage to the retina and retinal circulation due to high blood pressure.
Retinopathy of prematurity (ROP), also called retrolental fibroplasia (RLF) and Terry syndrome, is a disease of the eye affecting prematurely born babies generally having received neonatal intensive care, in which oxygen therapy is used due to the premature development of their lungs. It is thought to be caused by disorganized growth of retinal blood vessels which may result in scarring and retinal detachment. ROP can be mild and may resolve spontaneously, but it may lead to blindness in serious cases. Thus, all preterm babies are at risk for ROP, and very low birth-weight is an additional risk factor. Both oxygen toxicity and relative hypoxia can contribute to the development of ROP.
The choroid, also known as the choroidea or choroid coat, is a part of the uvea, the vascular layer of the eye, and contains connective tissues, and lies between the retina and the sclera. The human choroid is thickest at the far extreme rear of the eye, while in the outlying areas it narrows to 0.1 mm. The choroid provides oxygen and nourishment to the outer layers of the retina. Along with the ciliary body and iris, the choroid forms the uveal tract.
Roth's spots, also known as Litten spots or the Litten sign, are non-specific red spots with white or pale centres, seen on the retina and although traditionally associated with infective endocarditis, can occur in a number of other conditions including hypertension, diabetes, collagen vascular disease, extreme hypoxia, leukemia and HIV.
The Austin Hospital is a public teaching hospital in Melbourne's north-eastern suburb of Heidelberg, and is administered by Austin Health, along with the Heidelberg Repatriation Hospital and the Royal Talbot Rehabilitation Centre.
Eales disease is a type of obliterative vasculopathy, also known as angiopathia retinae juvenilis, periphlebitis retinae or primary perivasculitis of the retina. It was first described by the British ophthalmologist Henry Eales (1852–1913) in 1880 and is a rare ocular disease characterized by inflammation and possible blockage of retinal blood vessels, abnormal growth of new blood vessels (neovascularization), and recurrent retinal and vitreal hemorrhages.
Maurice F. Rabb Jr. was an American ophthalmologist. He is widely known for his pioneering work in cornea and retinal vascular diseases.
Sree Chitra Tirunal Institute for Medical Sciences & Technology (SCTIMST), Trivandrum, is an Institution of National Importance established by an Act of Parliament in 1980. It is under the aegis of Department of Science and Technology, Government of India, with an Institute Body and a Governing Body constituted as per the provisions of the Sree Chitra Tirunal Institute for Medical Sciences & Technology, Trivandrum, Act, 1980. The Institute presents a unique model by connecting the different strands of Biomedical Technology ,Clinical Medicine and Public Health to produce a seamless continuum of indisputable relevance to society.
The retinal nerve fiber layer (RNFL) or nerve fiber layer, stratum opticum, is formed by the expansion of the fibers of the optic nerve; it is thickest near the optic disc, gradually diminishing toward the ora serrata.
Ian Jeffrey Constable is an Australian ophthalmologist and the founder and director of the Lions Eye Institute in Perth, Western Australia. He was the Foundation Lions Professor of Ophthalmology at the University of Western Australia, and the Foundation Director of UWA's Centre for Ophthalmology and Visual Science. He is now Patron of the Lions Eye Institute.
Donald Eugene Strandness was an American physician, university professor, and research scientist. Dr. Strandness, known as Gene, was influential in the development of Doppler ultrasound as a diagnostic tool in vascular medicine, and did research that established much of the clinical grading criteria in the field of vascular ultrasound.
Teleophthalmology is a branch of telemedicine that delivers eye care through digital medical equipment and telecommunications technology. Today, applications of teleophthalmology encompass access to eye specialists for patients in remote areas, ophthalmic disease screening, diagnosis and monitoring; as well as distant learning.
Professor Julie Hazel Campbell AO FAA is an Australian vascular biologist from Sydney, Australia. Campbell is a professorial fellow at the Australian Academy of Science and is a world leader in the field of smooth muscle biology and, along with her husband, holds two patents for vascular implant material.
Atul Kumar is an Indian ophthalmologist who is currently the Chief & Professor of Ophthalmology at Dr. Rajendra Prasad Centre for Ophthalmic Sciences (RPC-AIIMS), the national apex ophthalmic centre at All India Institute of Medical Sciences, Delhi. He was awarded the Padma Shri award in January 2007 for his services to the medical field. He specializes in vitreoretinal surgery and also heads the Vitreo-Retinal, Uvea and ROP services at RPC-AIIMS.
Noemi Lois is a Clinical Professor of Ophthalmology at Queen's University Belfast and an Honorary Consultant Ophthalmologist and Vitreoretinal Surgeon at the Belfast Health and Social Care Trust.
Professor Robyn Guymer was awarded an Elizabeth Blackburn Fellow from the NHMRC, and works in Ophthalmology at Melbourne University. Guymer is a senior retinal specialist within the Royal Victorian Eye and Ear Hospital, and is the Deputy Director, Centre for Eye Research Australia. She works in age-related macular degeneration as a clinician, academic, and researcher, and has used nano-lasers to treat Age-related Macular Degeneration.
