Why can't we look at the trabecular meshwork directly? - 0 views

• 
  #1 winvision on 06 Oct 16

   

  Because of total internal reflection. Light from the trabecular meshwork moves toward the cornea, but reflects back into the eye at the tearfilm-air interface. This has to do with Snell's Law and the way light bends when going from a high-density medium into air.

  

  You can see this same phenomenon when swimming underwater. If you look straight up, you can see the sky above you. But if you look more tangentially, the undersurface of the water turns into a mirror.We can break this reflection by interrupting the tear-air interface. A gonio-prism is glass contact lens with a prism that it pressed against the cornea and allows us to see into the angle.READ MORE

   

  <div class="cArrow"> </div><div class="cContentInner"><p>Because of total internal reflection. Light from the<a target="_blank" href="http://winvision.in/service/3/cornea/" rel="nofollow"> trabecular meshwork</a> moves toward the <a target="_blank" href="http://winvision.in/service/3/cornea/" rel="nofollow"><strong>cornea</strong>,</a> but reflects back into the eye at the tearfilm-air interface. This has to do with Snell's Law and the way light bends when going from a high-density medium into air.</p><p><img height="382" alt="glaucoma-eyeopen-angle" width="328" src="https://winvisionblog.files.wordpress.com/2016/10/glaucoma-eyeopen-angle.jpg" class="wysiwyg-image" title="Image: https://winvisionblog.files.wordpress.com/2016/10/glaucoma-eyeopen-angle.jpg" /></p>You can see this same phenomenon when swimming underwater. If you look straight up, you can see the sky above you. But if you look more tangentially, the undersurface of the water turns into a mirror.We can break this reflection by interrupting the tear-air interface. A gonio-prism is glass contact lens with a prism that it pressed against the <strong><a target="_blank" href="http://winvision.in/service/3/cornea/" rel="nofollow">cornea</a></strong> and allows us to see into the angle.<strong><a target="_blank" href="http://winvision.in/" rel="nofollow">READ MORE</a></strong></div>

  ...

  Cancel

To Top