Now taking HSA cards on our website

Due to a previously incorrect setting we were unable to process HSA cards through our website or Collectly. That has been corrected as of today. We apologize for the inconvenience previously caused.

Fireworks and your Eyes

Thousands of people suffer from fireworks-related eye injuries every year. Don’t be a statistic. Leave the fireworks to the professionals. https://aao.org/eye-health/tips-prevention/injuries-fireworks-eye-safety… #ProtectingSightEmpoweringLives #Fireworks #4thofJuly #IndependenceDay

COVID-19 Update

At Retina Orange County, we take the threat of COVID-19 extremely seriously. In our specialty, our patients are often the group most vulnerable to COVID-19.

To that end, we are committed to providing a safe, clean and comfortable environment for all of our patients. Fortunately, many of the procedures required to keep the practice safe for all it’s staff and patients are things that we have been committed to since the beginning of our practice.

1. minimal wait times
2. digital or online check in
3. contactless and online payment options
4. sterilizing all patient contacting equipment
5. screening for symptoms of COVID-19
6. temperature checks
7. limiting non-patient visitors to essential companions only

We are now open with these enhanced procedures for all patients, new or old, routine, urgent or emergency. We still encourage any patients that are experiencing any active respiratory symptoms to avoid entering the office, and for at-risk patients to avoid coming for routine “checkup” appointments. However, if you are having vision changes, or other issues that require treatment, do not hesitate to make an appointment, confident in our ability to protect our most at risk and vulnerable patients from infection to the best of our ability.

Stay safe and healthy.

Sincerely,

Retina Orange County, Inc.

When the Bully Is a Doctor

https://www.nytimes.com/2018/06/14/well/live/doctor-bully-bullying.html?partner=rss&emc=rss

Bullying among health care workers is far more common than we acknowledge.

Artists Who Lose Their Vision, Then See Clearly

https://www.nytimes.com/2018/06/19/arts/design/macular-degeneration-serge-hollerbach-david-levine.html?partner=rss&emc=rss

Eight artists found new ways to see after learning they had macular degeneration. “Nothing to lose is a kind of new freedom,” says one of them.

Human Retinas Grown In A Dish Reveal Origin Of Color Vision

https://www.npr.org/sections/health-shots/2018/10/11/656560767/human-retinas-grown-in-a-dish-reveal-origin-of-color-vision?utm_medium=RSS&utm_campaign=news

In order to see the red of a sunset or the green of spring leaves, developing human eyes need to get the right hormone at the right time.

That’s the finding of a team of scientists who studied how color vision develops using hundreds of human retinas grown in the lab.

The discovery, published Thursday in the journal Science, could help accelerate current efforts to cure colorblindness. It could also lead to new treatments for diseases including macular degeneration, the leading cause of vision loss.

“It’s important that we understand how nature controls the development of the retina so we can understand better why things go wrong in disease and how we can treat them,” says Steven Becker, a scientist at the National Eye Institute. The newly published findings are a step in that direction, says Becker, who has no connection to the research.

The development of color vision in people has been difficult to study because it usually occurs in the womb — and out of sight. But two scientists at Johns Hopkins University thought they might find some answers using retinas grown in the lab.

These “retinal organoids” have been around for a few years but are difficult and tedious to grow, says Kiara Eldred, a graduate student at Hopkins who is the paper’s first author.

It takes up to a year to turn a batch of immature retinal cells into a functioning organoid.

“For the first week of their life, I take care of them every day,” Eldred says. After a couple of weeks, she says, the cells become “a little bit more independent.”

Credit: Johns Hopkins University

And with luck, these clusters of immature cells develop into a 3D structure that “looks and acts like a developing retina that you would see in a baby,” says Bob Johnston, Eldred’s boss and an assistant professor in the biology department.

Johnston’s lab had been studying vision in flies. But he and Eldred saw a chance to try something much more ambitious.

“We discussed this crazy idea of: Could we use these human retinal organoids to study how we get the different color-sensing cells in our eyes?” Johnston says.

Using human cells was key because you can’t study how humans see color in a fly, or even a mouse.

“Mice don’t sense red,” Johnston says. “They don’t have these red-detecting cells. So we really have to study this in human tissue to get any insight into how it works.”

Johnston and Eldred knew that in a human fetus, cells that detect blue light appear first. Then come cells that respond to red and green light.

And research on animals suggested that the thyroid hormone was involved in the development of these color-sensing cells, called cones. So Johnston had Eldred conduct an experiment with immature retinal cells.

“I added thyroid hormone to the dish during their development, and we got more red-green cones developing in those organoids,” she says. “We got really excited because we were on to something.”

It would take years and many more experiments to confirm that the thyroid hormone was actually triggering the emergence of color vision. And the team still hasn’t figured out what causes some cones to go on to become even more specialized by detecting only red or only green.

But Johnston says his lab is now preparing to take on two new goals.

“One is to restore color vision to people that are colorblind,” he says. What his lab is learning, he says, could help speed an existing effort to use gene therapy to cure colorblindness.



SHOTS – HEALTH NEWS

How A Cancer Drug Has Saved People From Going Blind

The lab’s second goal is to use retinal organoids to better understand diseases including glaucoma and macular degeneration, a leading cause of vision loss.

Macular degeneration affects the macula, an area of the retina that provides high-resolution vision. The condition has been hard to study, though, because mice don’t have a macula.

So Johnston hopes to learn more by having his lab create macular organoids.

There’s growing optimism among scientists that new treatments for retinal diseases will emerge from such efforts, Becker says. Initially, he says, researchers had doubts about whether a retina grown in a dish could mimic the real thing.

But studies like this one on color vision, he says, “show that the similarity is quite high.”

To encourage scientists to develop more retinal organoids, the National Eye Institute is sponsoring a scientific competition with $1 million in prizes.