What are eyes? by Natasha Harris https://padlet.com/15harrin/whatareeyes Natasha and Carys' eye project en-us 2016-10-07 11:39:03 UTC 2024-10-05 12:40:36 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png Welcome to our eye website x 15harrin https://padlet.com/15harrin/whatareeyes/wish/129079878 2016-10-07 11:53:48 UTC https://padlet.com/15harrin/whatareeyes/wish/129079878 The Iris, coloured - decides the colour of your eyes - so light cannot pass through. Its muscles contract and relax to alter the size of its central hole or pupil. https://padlet.com/15harrin/whatareeyes/wish/129080453 2016-10-07 11:56:22 UTC https://padlet.com/15harrin/whatareeyes/wish/129080453 The cornea, front part of the tough outer coat, the seclera is convex and transparent. https://padlet.com/15harrin/whatareeyes/wish/129080806 2016-10-07 11:57:52 UTC https://padlet.com/15harrin/whatareeyes/wish/129080806 https://padlet.com/15harrin/whatareeyes/wish/129081729 the corneas function is to refracts light - bends it as it enters the eye]]> 2016-10-07 12:02:08 UTC https://padlet.com/15harrin/whatareeyes/wish/129081729 The Optic nerve, bundle of sensory neurones at back of eye. https://padlet.com/15harrin/whatareeyes/wish/129082854 2016-10-07 12:07:50 UTC https://padlet.com/15harrin/whatareeyes/wish/129082854 The Retina, https://padlet.com/15harrin/whatareeyes/wish/129083139 The lining of the back of eye containing two types of photoreceptor cells - rods - sensitive to dim light and black and white - and cones - sensitive to colour]]> 2016-10-07 12:09:06 UTC https://padlet.com/15harrin/whatareeyes/wish/129083139 the iris' function controls how much light enters the pupil https://padlet.com/15harrin/whatareeyes/wish/129083666 2016-10-07 12:11:12 UTC https://padlet.com/15harrin/whatareeyes/wish/129083666 the lens function is to focuses light onto the retina https://padlet.com/15harrin/whatareeyes/wish/129084505 2016-10-07 12:13:58 UTC https://padlet.com/15harrin/whatareeyes/wish/129084505 https://padlet.com/15harrin/whatareeyes/wish/129441917 2016-10-10 09:09:39 UTC https://padlet.com/15harrin/whatareeyes/wish/129441917 https://padlet.com/15harrin/whatareeyes/wish/129442053 2016-10-10 09:10:09 UTC https://padlet.com/15harrin/whatareeyes/wish/129442053 15harrin https://padlet.com/15harrin/whatareeyes/wish/129442995 Because our eyes sit side by side, each eye captures a slightly different view. This is called stereoscopic vision.

]]> 2016-10-10 09:15:06 UTC https://padlet.com/15harrin/whatareeyes/wish/129442995 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129442996 This is a picture of a of a human retina seen through the eye


]]> 2016-10-10 09:15:06 UTC https://padlet.com/15harrin/whatareeyes/wish/129442996 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129443773 the retina contains the light receptors.]]> 2016-10-10 09:19:22 UTC https://padlet.com/15harrin/whatareeyes/wish/129443773 the optic nerve carries impulses from the eye to the brain 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129444194 2016-10-10 09:21:24 UTC https://padlet.com/15harrin/whatareeyes/wish/129444194 birds and lizards have monocular vision. This means their eyes are on each side of their head. This gives them a greater field of view of what is around them 15harrin https://padlet.com/15harrin/whatareeyes/wish/129444240 2016-10-10 09:21:36 UTC https://padlet.com/15harrin/whatareeyes/wish/129444240  Light passes through the eyeball to the retina. It is refracted (its rays are bent) by the cornea and lens, so that the light is brought on the retina. 15harrin https://padlet.com/15harrin/whatareeyes/wish/129444451 2016-10-10 09:22:44 UTC https://padlet.com/15harrin/whatareeyes/wish/129444451 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129444585 this is an eye if you are short sighted.]]> 2016-10-10 09:23:16 UTC https://padlet.com/15harrin/whatareeyes/wish/129444585 Someone with short-sightedness can see near objects clearly, but cannot focus properly on objects that are far away. This is because the lens focuses the sharpest image in front of the retina, instead of on it. 15harrin https://padlet.com/15harrin/whatareeyes/wish/129444989 2016-10-10 09:24:50 UTC https://padlet.com/15harrin/whatareeyes/wish/129444989 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129445050 this is what your eye looks like if your long sighted.]]> 2016-10-10 09:25:03 UTC https://padlet.com/15harrin/whatareeyes/wish/129445050 Someone with long-sightedness can see distant objects clearly, but cannot see things properly with things near. This is because the lens focuses the sharpest image behind the retina, instead of on it. This defect is often age-related, and due to a loss of elasticity in the lens. It is corrected by putting a convex lens in front of the eye. 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129445335

]]> 2016-10-10 09:26:06 UTC https://padlet.com/15harrin/whatareeyes/wish/129445335 Colour blindness is an condition that runs in the family. The retina contains cells that are sensitive to red, green or blue light. People with colour blindness have hardly any receptors. People with red-green colour blindness, for example, have difficulty noticing shades of red and green. 15harrin https://padlet.com/15harrin/whatareeyes/wish/129445346 2016-10-10 09:26:10 UTC https://padlet.com/15harrin/whatareeyes/wish/129445346 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129448152 this is what colours look like if your colour blind.]]> 2016-10-10 09:39:03 UTC https://padlet.com/15harrin/whatareeyes/wish/129448152 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129448623 parts of the eye.]]> 2016-10-10 09:41:26 UTC https://padlet.com/15harrin/whatareeyes/wish/129448623 Most color vision problems are inherited and are present at birth. 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129449103 2016-10-10 09:44:01 UTC https://padlet.com/15harrin/whatareeyes/wish/129449103 some symptoms that you may have if your colour-blind. For instance, you may not be able to tell the difference between some reds and greens but can see blue and yellow easily 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129449520 2016-10-10 09:45:53 UTC https://padlet.com/15harrin/whatareeyes/wish/129449520 Most babies are born with blue eyes that can darken in their first three years. Darkening occurs if melanin, a brown pigment usually not present at birth, develops with age. Children can have completely different eye colors than either of their parents. 15harrin https://padlet.com/15harrin/whatareeyes/wish/129449952 2016-10-10 09:47:52 UTC https://padlet.com/15harrin/whatareeyes/wish/129449952 15daviec3 https://padlet.com/15harrin/whatareeyes/wish/129451302 what colour eyes will your children have?]]> 2016-10-10 09:54:07 UTC https://padlet.com/15harrin/whatareeyes/wish/129451302 15harrin https://padlet.com/15harrin/whatareeyes/wish/129451698 2016-10-10 09:55:43 UTC https://padlet.com/15harrin/whatareeyes/wish/129451698