Eye Floaters Veil

Eye Floaters What is Eye Floaters Symptoms and Treatment For Eye Floaters

For us to see the world around us lightenters the front of the eye in passes through the vitreous beforeit's focused on the retina the vitreous is the clear gel like fluidinside the eye the retina is the lightsensitive tissuelining the back of the eye frequently tiny clumps of cells forminside the jail like the Trias the shadows these cons cast on thereading are what we perceive as floaters make an appearance dots circles lines clouds or cobwebs in the field divisionfloaters are more common as we reach

middle age time in our life in the vitreous gel canstart to thicken and shrank forming clumps or strandssometimes the shrinking at the vitreous can create tiny tears in the retina as pulls away from the wall of the I ifthese tears bleed new floaters may appear with flashes thevitreous gel is rubbing or pulling up the retina moving it slightly from its normalposition lining the back of the eye

flashes are flashes a blight that appearin your vision intermittently and may be noticeable off and on forseveral weeks to months trauma to the eye can often causefloaters and flashes also migraine headaches can causesplashes floaters and flashes can also be caused by retinal detachment seriouscondition requiring immediate attention warning signs have aretinal detachment are flashing lights a sudden appearance at noon floatersshadows in the side or prefer if your vision

or gray court moving across repealdivision the symptoms don't always mean you're experiencing a retinal detachmentbut you should see your ophthalmologist right away treatments for a detachedretina very but in general the goal is to return theaffected area of the retina to its correct position at the back of the eye there are several techniques for doingthis for example a flexible band called the scleralbuckle is placed around the eyeball to counteract the force pulling the rightnow out of place

blew it may be drained from under thedetached retina allowing it to settle back into itsnormal position against the back of the eye or a gas bubble may be placed in the eyeto push the right now back in place with pneumatic retina pack see a gasbubble is injected into the vitreous pace inside the eye the bubble pushes the retinal tearclosed against the back wall the I with this procedure the patientmust maintain a certain head position

for several days after surgery the gas bubble willeventually disappear laser or cry or therapy is also added toseal the retinal tear back in place the track to me is a surgery where thevitreous gel that is pulling on the retina is removed from the I and replaced witha gas bubble overtime fluid naturally replaces thisgas bubble in select cases silicon oil is usedinstead of gas

SciShow Talk Show John Roach on Ecology Freckles the Leopard Gecko

Intro Hello and welcome to the SciShow Talk Show,the day on SciShow where we talk to cool people about interesting things. This is John Roach. He is an ecologistand has been for quite a while, and I just got briefed on his whole history. There isa lot to it. Start me off at the beginning of your ecology career. JR: Well, I took a turn from studying governmentand doing policy and realizing that it was hard to advise people when I didn't understandscience. So, when I had an opportunity to

work in Yellowstone studying coyotes, I packedmy bags and moved from Washington D.C. to live in Yellowstone and study coyotes. HG: That sounds pretty awesome. Uh, when wasthisé JR: Uh, this was in the mid 90's, so beforewolves were introduced, when coyotes still roamed HG: Ruled JR: in packs. So, they had large packs there,and people were keeping track of those, and they were the premiere wildlife viewing duringthe winter. I used that as a stepping stone

to move on to do a Master's degree. So, Itook some courses getting ready for Master's, but then I started studying pikas. Part of the reason I was interested in thoseis the same sorts of questions occur around pikas as did really about reintroduction ofwolves. Do pikas structure plant communities because of their fear of being eatené So, pikas are these rabbitlike creatures.They are in the rabbit family. They are about the size of a hamster. They live in high alpineareas. They hide in rock areas because that's safe, but there is not much food there sothey have to venture out from the talus to

find something to eat, and the further theygo, the riskier it is for them. So they tend to concentrate that foraging on areas thatare near the edge of the talus. And consequently, they have a really strong and interestingimpact on which plants you find where. And this is the same idea, that people werewondering whether or not when wolves were returned either by simply reducing the numberof elk or by changing where they forage, if they would change the plant communities. HG: Mhmm. JR: They are an interesting critter from aconservation perspective because they are,

uh, widely thought by some people to be apotentially quot;canary in the coal minequot; for climate change, because as the world warmsspecies ranges are assumed to move uphill, and if you are already on the top of the hillthere is not much room to go. So there's certainly some people that are interested in pikas fromthat perspective, but I wasn't. I was interested in their effects on plants. HG: So that was your Master's research. JR: Correct. HG: I introduced you as so you musthave continued.

JR: I did! So I one of the things I likeabout pikas was they're charismatic and they're fun to observe. But. HG: AhAdorable. JR: Yeah! And so that was great. The difficultthing about working the high alpine is that the plants there grow really, really slowly.So we set up this experiment and we watched it for three field seasons, which is actuallya fairly long Master's and small changes occurred. During that time I had been working with somepeople that did aquatic work. Aquatic systems

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