This is how we see them, drifting as if they are sliding on wet ice. Light enters the eye and is partially blocked by these collagen bundles, casting a shadow on the retina. In this way, the vitreous is said to shrink.Įventually, some of these collagen cables make their way back inside the liquid pockets and move around. These pockets are basically liquid water. These tiny hairs, the collagen fibres, start to clump up, creating thick cables, leaving behind pockets in the gel devoid of proteins. As we get older, the gel and the hairs begin to separate here and there. Those are the proteins, including collagen. You can imagine this vitreous inside of your eye as a ball of Jell-O with tiny hairs inside. But if we were to be shrunk and take a trip inside one of them, we would be swimming in what is called the vitreous, short for vitreous humour. There’s always room inside the eye for Jell-OĮyeballs are squishy and many people recoil at the sight of them being poked and prodded. Others have made videos taking on the dietary challenge to see if their floaters have disappeared.īefore we take a closer look at the role pineapples may play in clearing the cobwebs in the old optical space, a word on what floaters actually are. The video itself contains a number of caveats, but you wouldn’t know it from the clickbaity title. This is the rather juicy claim made in a video boldly titled “Eye Floaters No More!” that has garnered 1.7 million views on YouTube. It would be wonderful if they could be eliminated simply by eating more pineapple. They are worm-like threads or spots or bits of cobweb, slowly sliding up and down, left and right, marring a once crystalline vision with ever-moving debris. These translucent shapes drift in front of our eyes like they are sliding on a slick puddle of oil. In French, they translate as flying flies. In Latin, they are known as muscae volitantes. One of the banes of getting older is the appearance of apparitions in our vision. Unfortunately, they can also be killed by baiting campaigns - so care should be taken when considering pest rat control near to waterways to protect this species.Shadow puppetry can be beautiful to look at, but when it’s happening inside our eyeballs, it’s an annoyance. “This includes the water rat or Rakali (indigenous name) Hydromys chrysogaster which can be up to one kilogram and is in Sydney harbour and foreshore areas. “We have more than 60 species of native rat in Australia,” Professor Banks said. Professor Banks is concerned that rat baits also kill our native Australian rats. Black rats are by far the most common in Sydney as a whole, including in bushland areas as well as urban, while the brown rats more common in the inner city.” “Both have global distributions, spread by European explorers on ships. Photo: Mal Weerakoon What rat is that?Ĭonservation biologist Professor Peter Banks, from the School of Life and Environmental Sciences, said there are two main species of rat in Sydney: the brown rat, Rattus norvegicus, also known as the Norway rat and the black rat Rattus rattus, also known as the ship rat or roof rat. Black and brown rats are very common in Sydney.
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