611 W. Union Street
Benson, AZ 85602
(520) 586-0800

Health Choice Integrated Care crisis Line
1-877-756-4090

NurseWise 24-Hour Crisis Line
1-866-495-6735

NAZCARE Warm Line
1-888-404-5530



SEABHS
611 W. Union Street
Benson, AZ 85602
(520) 586-0800

NurseWise 24-Hr Crisis Line
1-866-495-6735

NAZCARE Warm Line
1-888-404-5530


powered by centersite dot net

Getting Started
Here are some forms to get started. These can be printed and brought with you so that you can pre-fill out some known info ahead of time. More...


Health Sciences
Resources
Basic InformationLatest News
Scientists Spot Genes Behind Skin ColorScientists Support Genome Editing to Prevent DiseaseBrain Disconnects Spotted in Parkinson's Patients With Visual HallucinationsCoffee Doesn't Help Parkinson's Motor DisordersCan Babies Help Heart Patients?Scientists Spot Marker for CTE in Living Football PlayersNerve Stimulation Pulls Patient From 15-Year Vegetative StateWhy Your Nose May Be Key to Parkinson's RiskEvolution Not Over for HumansBrain Scans Offer Clues to Why Some Teens Pile on PoundsNew Clues to Why Yawns Are ContagiousNew Hope From Old Drugs in Fight Against Parkinson'sFirst Gene Therapy Approved in U.S.Awake for Aneurysm Brain Surgery, Better Results?Does Autism Risk Reside in Cells' Energy Engines?More Evidence Contact Sports Can Affect the BrainVirtual House Calls for Speedy, Effective Parkinson's CareSeven Imaging Biomarkers Tied to Cognition in Male FightersDiabetes Drug Shows Promise Against Parkinson'sCombined MRI Might Help Predict Brain Damage in BoxersMedical Reality Catches Up to Science FictionNoninvasive Brain Test May Pinpoint Type of DementiaIn Mice, Brain Cells Discovered That Might Control AgingScans May Show Consciousness in 'Comatose' PatientsBoxers, MMA Fighters May Face Long-Term Harm to Brain: StudyFDA Panel OKs What May Soon Be First Gene Therapy Approved in U.S.Early Parkinson's May Prompt Vision ProblemsWhole-Genome Sequencing of Uncertain Clinical UtilityCould Shift Work Damage Your DNA?Gene Sequencing May Reveal Risks for Rare DiseasesRogue Genes May Cause Some ALS CasesSticky Brain 'Plaques' Implicated in Alzheimer's AgainEven Your Bones Can Get Fat, Mouse Study SuggestsDoes a Low-Fat Dairy Habit Boost Parkinson's Risk?MicroRNA Biomarker Signature Identified for Allergic AsthmaHaywire Immune Cells May Help Cause BaldnessRegion in Brain Associated With Fear of Uncertain FutureBrain Scans Spot Where Fear and Anxiety LiveGene Therapy Might Someday Mend Badly Broken BonesLife Expectancy Slighter Shorter With Parkinson's, DementiaStudy Looks at Parkinson's Effect on Life SpanBody Cooling May Help Brain After Cardiac ArrestDo You Overeat? Your Brain Wiring May Be WhyGene Mutation May Speed Alzheimer's DeclineIs This Enzyme Making You Fat?Type 2 Diabetes May Be Bad for Brain Health'Brain Age' May Help Predict When You'll DieParkinson's Disease May Originate in Gut, Study SaysBlood-Based Genome Testing Feasible for Rapid Mutation AssayBlood Test May Gauge Death Risk After Surgery
Questions and AnswersLinksBook Reviews
Related Topics

Medical Disorders
Mental Disorders
Mental Health Professions

Scientists Shed Light on Possible Cause of Nearsightedness

HealthDay News
by -- Robert Preidt
Updated: Feb 21st 2017

new article illustration

TUESDAY, Feb. 21, 2017 (HealthDay News) -- Whether you're nearsighted or not might come down to one particular type of cell in your retina, a new mouse study suggests.

Researchers from Northwestern University's Feinberg School of Medicine in Chicago report that this cell is highly sensitive to light and controls how the eye develops.

If it malfunctions and tells the eye to grow for too long, images don't get focused in the retina as they should be, the researchers said.

"The eye needs to stop growing at precisely the right time during childhood," said lead investigator Greg Schwartz, an assistant professor of ophthalmology.

"But for years no one knew what cell carried the signal," he explained in a university news release. "We potentially found the key missing link, which is the cell that actually does that task and the neural circuit that enables this important visual function."

The study was conducted in mice and the findings were published in the Feb. 20 print issue of the journal Current Biology.

The researchers next want to identify a gene that is specific to this cell, so they can turn its activity up or down in a mouse model. That would allow them to see if they might be able to trigger or cure nearsightedness, or myopia, Schwartz's team said.

"This discovery could lead to a new therapeutic target to control myopia," said Schwartz, whose work is funded by the U.S. National Institutes of Health.

But animal studies don't always produce similar results in humans.

More than 1 billion people worldwide are nearsighted, and that number is rising. Nearsightedness has been linked to too much time spent indoors and not enough time spent in natural light, , the researchers said.

More information

The U.S. National Eye Institute has more on myopia.