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Charles Bonnet Syndrome
Published in Alexander R. Toftness, Incredible Consequences of Brain Injury, 2023
Once thought to be rare, it is increasingly believed that Charles Bonnet syndrome occurs somewhat frequently. It is now believed to occur in more than 10% of people with age-related macular degeneration, although studies have found different percentages depending on the population (Schadlu et al., 2009). The condition seems to be more common in women and becomes increasingly likely in a given person as visual acuity worsens (Niazi et al., 2020).
Microalgal Pigments as Natural Color
Published in Hafiz Ansar Rasul Suleria, Megh R. Goyal, Masood Sadiq Butt, Phytochemicals from Medicinal Plants, 2019
K. G. Sreekala, Malairaj Sathuvan, Javee Anand, Karuppan Ramamoorthy, Vengatesh Babu, S. Nagaraj
Carotenoids have been used extensively in the food industry as dyes and as feed additives for live-stock, poultry, and fish farming. The importance of carotenoids is not limited only to their well-known coloring properties but also to their antioxidant capacity, nutritional quality as provitamin-A, and beneficial health characteristics. Different studies have demonstrated their ability to prevent a variety of ailments like cataract, age-related macular degeneration, atherosclerosis, and selected cancers. All these beneficial features have encouraged the use of carotenoids as food additives and nutraceuticals.
Chronic Hyperglycemia Impairs Vision, Hearing, and Sensory Function
Published in Robert Fried, Richard M. Carlton, Type 2 Diabetes, 2018
Robert Fried, Richard M. Carlton
Macular degeneration causes loss in the center of the field of vision. In dry macular degeneration, the center of the macula deteriorates. With wet macular degeneration, leaky blood vessels grow under the retina. The National Eye Institute of the National Institutes of Health has a website titled “What you should know about age-related macular degeneration.” It features “What is AMD?” AMD is a common eye condition and a leading cause of vision loss among people age 50 and older. It causes damage to the macula, a small spot near the center of the retina and the part of the eye needed for sharp, central vision, which lets us see objects that are straight ahead.In some people, AMD advances so slowly that vision loss does not occur for a long time. In others, the disease progresses faster and may lead to a loss of vision in one or both eyes. As AMD progresses, a blurred area near the center of vision is a common symptom. Over time, the blurred area may grow larger or you may develop blank spots in your central vision. Objects also may not appear to be as bright as they used to be. AMD by itself does not lead to complete blindness, with no ability to see. However, the loss of central vision in AMD can interfere with simple everyday activities, such as the ability to see faces, drive, read, write, or do close work, such as cooking or fixing things around the house.
Physical Activity Self-Efficacy in Older Adults with Vision Loss: A Grounded Theory Study
Published in Occupational Therapy In Health Care, 2023
Beth A. Barstow, Nataliya V. Ivankova, Laura K. Vogtle, Laura Dreer, Brian Geiger, Laurie A. Malone
In industrialized countries, the most prevalent cause of low vision is age-related macular degeneration (AMD) (NEI, 2020). The National Eye Institute (2020) defines age-related macular degeneration as a progressive chronic eye condition affecting the macular area of the retina. The macula, located in the central 20 degrees of the visual field, is composed primarily of cone cells responsible for providing information regarding the color, contrast and detail of objects and environments. Individuals with AMD have difficulty with tasks that require fine-detail vision such as reading, recognizing faces, and detecting low contrast drop-offs such as unmarked curbs (NEI, 2020). Additionally, individuals experience fluctuations in vision, macular scotomas, photophobia, and slow dark/light adaptation (NEI, 2020).
Orthoptic service survey in the UK and Ireland during the interim recovery period (summer 2020) of the COVID-19 pandemic
Published in Strabismus, 2021
Fiona J. Rowe, Lauren R. Hepworth, Claire Howard
Thirty departments reported redeployment roles for orthoptists, 84 reported no redeployment but options for this had been discussed, and 13 reported no redeployment and no discussion of this with staff. The roles reported to be covered by orthoptic redeployment included: Assistant roles – radiology assistant, Occupational Therapy assistant, 2nd assistant in intravitreal therapy (IVT) clinics, backfill of nursing health care assistant (HCA) roles, chaperones, buddy system on late shifts for community nursing, and ward runner.Administrative roles – canceling and rebooking appointments, triaging, filing letters, receptionist, procurement, lost to follow-up spreadsheet management, staff sickness absence phone line, telephone reporting results to trust staff, and manning relative support line.Other hospital department roles – Human Resources, IT services, trade union support, and bereavement service.Other roles within Ophthalmology – Triage and assessment in urgent eye clinic and preassessment in age-related macular degeneration (AMD) clinic.COVID-related roles – Swabbing for COVID-19, PPE fit testing, donning and doffing, visor making, proning, and scrubs exchange.
Nutrition knowledge and dietary patterns in ophthalmic patients
Published in Clinical and Experimental Optometry, 2021
Samuel B Boadi‐kusi, Edward Asiamah, Stephen Ocansey, Sampson L Abu
Stevens et al.28 in a survey of 158 patients with age‐related macular degeneration, found that only 55 per cent were aware of the connection between diet and ocular health. Although different subsets of ophthalmic patients were studied, the overall level of awareness found in our study (54.3 per cent) is comparable to that reported in Stevens et al.28 However, in the current study a lower level of nutrition awareness was found for cataract patients and glaucoma patients: 36.3 per cent (62 out of 171) and 43.2 per cent (70 out of 162), respectively. The higher level of nutrition awareness reported for the patients with age‐related macular degeneration in the study by Stevens et al.28 can be attributed to the fact that, unlike cataract and glaucoma, management of age‐related macular degeneration includes nutritional supplementation.11 As a result, age‐related macular degeneration patients may seek and acquire more nutrition knowledge than cataract and glaucoma patients.