Ophthalmology / Optometry - Mar 8, 2019 Edition | Medical News | Medical Articles

Medical News | Medical Articles

March 8, 2019     Ophthalmology / Optometry     The latest ophthalmology / optometry news from News Medical

Global health burden of glaucoma has increased, study reveals   The health burden of glaucoma has continuously increased around the globe in the past 25 years, according to an Acta Opthalmologica study. Higher burdens were associated with lower socioeconomic level and older age.

What Causes Ocular Hypertension?   The pressure inside the eyeball is called intraocular pressure. In normal physiological condition, fluids enter the eyeball to supply nourishment and maintain the shape of the eye. Sometimes, a dysfunctional eye drainage system causes the fluid to build up, resulting in an increase in pressure inside the eye (ocular hypertension).         Heavy smoking could lead to vision loss, study finds   Smoking more than 20 cigarettes a day can damage your vision, a study co-authored by a Rutgers researcher finds. The research appears in the journal Psychiatry Research. The Centers for Disease Control and Prevention estimates that 34.3 million adults in the United States currently smoke cigarettes and that more than 16 million live with a smoking-related disease, many of which affect the cardiovascular system.

Ocular Hypertension: Diagnosis and Treatment   A healthy eye pressure should be between 10 mm Hg and 21 mm Hg. Eye pressure measurements that are consistently above the upper limit are considered indicative of ocular hypertension.       Age-Related Macular Degeneration Awareness Month: How visual impairment affects older adults   As Age-Related Macular Degeneration/Low Vision Awareness Month comes to a close, we’re sharing three stories by Bonnielin Swenor, Ph.D., M.P.H., assistant professor of ophthalmology at the Wilmer Eye Institute in the Johns Hopkins University School of Medicine, and an assistant professor of epidemiology at the Johns Hopkins Bloomberg School of Public Health.       What is Nyctalopia?   Nyctalopia is the name for a symptom characterized by the reduced ability to see at night and in low light conditions. It is also called night-blindness. While it isn’t a medical condition in and of itself, it can be a symptom of another disorder.       What is a Vitrectomy?   A vitrectomy is a surgical procedure that may be carried out for a number of reasons: Improving vision in patients experiencing complications from diabetes. Removing foreign bodies from the eye in cases of trauma. Taking a biopsy to diagnose infections or diseases and as part of other operative procedures on the retina       Laser-based technique allows doctors to image the whole eye in 3D   Scientists have developed a laser-based technique that can produce a full 3D image of all the layers of the retina, allowing doctors to better diagnose and treat eye diseases such as cataracts, diabetic retinopathy, and cancer.       What are the Symptoms of Coloboma?   A coloboma is an eye abnormality present at birth that results from the absence of some tissues in certain parts of the eye. One or both eyes may be affected. The most obvious presentation of a coloboma is as a notch or a gap in some part of the eye, whether that be the iris, the retina, the choroid, or the optic nerve. Colobomas of the eyelids also occur but have a different route of origin.       Using smartphones to capture photographs of patients' eyes may lead to misdiagnosis   Clinicians who use smartphones to capture photographs of patients' eyes risk misdiagnosis if they base their decisions on objective data extracted from non-calibrated cameras, according to new research published this week in the Nature journal Scientific Reports.

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