Journal of optometry
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Journal of optometry · Oct 2020
ReviewPost-COVID-19 and the Portuguese national eye care system challenge.
The pandemic of the severe acute respiratory syndrome disease caused by the new coronavirus SARS-CoV-2 (COVID-19), had profound impact in many countries and their health care systems. Regarding Portugal, a suppression strategy with social distancing was adopted, attempting to break the transmission chains, bending the epidemy curve and reducing mortality. These measures seek to prevent an eventual National Health Service over-running, enforcing the suspension of all elective and non-urgent health care. ⋯ The optometrist's exclusion from differentiated, multisectoral and multidisciplinary eye care teams remains the main hurdle to overcome and insure universal eye care in Portugal. National Health Service highlights the consequences of an overcome model. Universal eye care more than ever demands an evidence-based, integrated approach with primary eye care, in the community, on time and of proximity.
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Journal of optometry · Jan 2017
ReviewThe potential role of neuropathic mechanisms in dry eye syndromes.
Dry eye syndromes can involve both nociceptive and neuropathic symptoms. Nociceptive symptoms are the normal physiological responses to noxious stimuli. Neuropathic symptoms are caused by a lesion or disease of the somatosensory nervous system and can be the result of hypersensitisation of peripheral or central corneal and conjunctival somatosensory nerves. ⋯ Dry eye symptoms in the absence of commensurate evidence of tear dysfunction, and unsatisfactory response to tear dysfunction therapies should prompt consideration of neuropathic mechanisms being involved. Symptoms which persist after local anaesthetic instillation are more likely to be neuropathic in origin. Reducing inflammation may help limit any associated neuroplastic hypersensitivity.
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Journal of optometry · Oct 2016
ReviewA systematic review of controlled trials on visual stress using Intuitive Overlays or the Intuitive Colorimeter.
Claims that coloured filters aid reading date back 200 years and remain controversial. Some claims, for example, that more than 10% of the general population and 50% of people with dyslexia would benefit from coloured filters lack sound evidence and face validity. Publications with such claims typically cite research using methods that have not been described in the scientific literature and lack a sound aetiological framework. ⋯ Individually prescribed coloured filters have been shown to improve reading performance in people with visual stress, but are unlikely to influence the phonological and memory deficits associated with dyslexia and therefore are not a treatment for dyslexia. This review concludes that larger and rigorous randomised controlled trials of interventions for visual stress are required. Improvements in the diagnosis of the condition are also a priority.
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Journal of optometry · Oct 2016
ReviewA systematic review of controlled trials on visual stress using Intuitive Overlays or the Intuitive Colorimeter.
Claims that coloured filters aid reading date back 200 years and remain controversial. Some claims, for example, that more than 10% of the general population and 50% of people with dyslexia would benefit from coloured filters lack sound evidence and face validity. Publications with such claims typically cite research using methods that have not been described in the scientific literature and lack a sound aetiological framework. ⋯ Individually prescribed coloured filters have been shown to improve reading performance in people with visual stress, but are unlikely to influence the phonological and memory deficits associated with dyslexia and therefore are not a treatment for dyslexia. This review concludes that larger and rigorous randomised controlled trials of interventions for visual stress are required. Improvements in the diagnosis of the condition are also a priority.