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Ophthalmology

View on How Retinal Cells in Mammals Process Light

The new experiments with mouse eye tissues strongly suggest that a longstanding “textbook concept” about the way a mammal’s retina processes light needs a rewrite. The enduring concept took root more ;than 30 years ago when researchers doing experiments in frog retinas find that when a single particle of light; known as a photon; is…

LED Light

Health Authority: LED Light Can Damage Eyes

The agency recommended in a 400-page report that the maximum limit for acute exposure revised; even if such levels are rarely in home or work environments. The report distinguished between acute exposure of high-intensity LED light, and “chronic exposure” to lower intensity sources. While less dangerous, even chronic exposure can “accelerate the ageing of retinal…

Macular Degeneration

Genetic Underpinnings Of Macular Degeneration

Age-related macular degeneration (AMD) is one of the most common causes of vision loss in people over age 65. The exact cause is unknown, but the fact that a family history of AMD increases a person’s risk; for the condition suggests genetics play an important role. Using stem cells derived from six people; University of…

Open-angle glaucoma

Statin Use Linked To Lower Risk For Glaucoma

Statin use may lower the risk for primary open-angle glaucoma (POAG); according to a study published online May 2 in JAMA Ophthalmology. Jae H. Kang, Sc.D., from Brigham and Women’s Hospital in Boston; colleagues evaluated the association between elevated cholesterol levels and statin use and incident POAG among participants (age, ≥40 years) in the Nurses’…

Retina Regeneration

Uncover Mechanism Blocking Retina Regeneration

Discovery opens the possibility of a one-day restoring loss of vision by activating the retina’s ability to regenerate. Reports that although the mammalian retina a layer of nerve cells; that mediates vision and is located on the back of the eye- does not spontaneously regenerate; it has a regenerative capacity that is dormant by a…

Dry eye

New Treatment For Severe Dry Eye Disease

Dry eye syndrome (DES), also known as keratoconjunctivitis sicca (KCS); is the condition of having dry eyes. Other associated symptoms include irritation, redness, discharge, and easily fatigued eyes. Dry eye occurs when either the eye does not produce enough tears or when the tears evaporate too quickly. The researcher did the trial compared eye drops containing…

Neuromyelitis optica

Risk Of Relapse With Neuromyelitis Optica Spectrum Disorder

Neuromyelitis optica, also known as Devic’s disease, occurs when the body’s immune system reacts against otherwise healthy nervous system cells in the optic nerves and spinal cord, and sometimes in the brain. Neuromyelitis optica often is misdiagnosing as multiple sclerosis (MS), but neuromyelitis optica is a distinct condition by more severe attacks and less complete…

Ophthalmicus

Herpes Zoster Ophthalmicus Among Older Adults

More Americans are with eye complications of shingles, but older adults can call the shots; on whether they are protected from the painful rash that can cost them their eyesight. Among a group of 21 million adults, occurrences of herpes zoster ophthalmicus (HZO); when shingles get in the eyes, tripled during a 12-year-period, according to…

Myopia

People Do Not Have Spectacles To Correct Myopia

Vision impairment caused by uncorrected myopia cost the global economy an estimated US$244 billion; in lost productivity in 2015, according to a new study published in the March print issue of the scientific journal Ophthalmology. The research estimated that 538 million people had vision impairment resulting from uncorrected myopia, with the East Asia region, which…

Retinopathy

Suffering From Melanoma-Associated Retinopathy

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…

Candida bloodstream infection

Ophthalmic Screening After Candida Bloodstream Infection

Candidiasis is an infection (candidiasis) that can cause by various species of Candida yeast. Unlike Candida infections of the mouth and throat (oral candidiasis) or vagina (Candidal vulvovaginitis); invasive candidiasis is a serious, progressive, and potentially fatal infection that can affect the blood (fungemia), heart, brain, eyes, bones, and other parts of the body Although candida bloodstream infection is…

Diabetic macular edema

Diabetic Macular Edema In People With Good Vision

A change to the approach for treating diabetic macular edema may on the way; The study was conducted by the DRCR Retina Network, a multicenter clinical research network funded by the National Eye Institute; part of the National Institutes of Health (NIH). The study found that people with diabetic macular edema; who still have good…