| Is there a link between vision and learning?<br>If one can see the print, is that the extent to which vision is beneficial, or does the process of learning require more than just the [http://www.dict.cc/?s=ability ability] to see print? When some Optometrists test a child with learning problems, the result often conveyed to parents is something along the lines of, "This child has 20/20 vision", or "This child sees perfectly well." The [http://Www.dict.cc/englisch-deutsch/underlying+implication.html underlying implication] is that, if a child can see, they should be able to learn, but anyone who's worked with learning disabilities as long as I have realizes that nothing might be further from the facts!<br><br><br>The Relationship Between Vision and [http://tinyurl.com/ku6vjks uggs on sale] Learning<br>Let's be clear from the outset, sight and vision are different. Sight [http://tinyurl.com/ku6vjks ugg boots] is whether or not a kid sees the print, [http://tinyurl.com/ku6vjks http://tinyurl.com/ku6vjks] but vision goes beyond this, taking into consideration how they understand, interpret and absorb visual information. Let me illustrate. I am a fairly intelligent guy, university trained and quite experienced [http://tinyurl.com/ku6vjks http://tinyurl.com/ku6vjks] in life.<br>My distance vision is good (20/20 at the least), yet for a recent trip to Singapore, I saw a street filled with signs in Chinese, and I could not understand ANY of [http://tinyurl.com/ku6vjks ugg boots sale] them! Not even one. I saw just fine, but could not even attempt to pronounce them, not to mention understand them!<br><br>In a sense, I don't possess the code for the written Chinese language. I can see it, but I cannot understand what the symbols mean. I can even copy it, but it really is without meaning to me. And for many children with learning problems, they experience something similar with English words.<br><br>Improve Vision and Learning Can Improve Too<br>If a child sees the print, I cannot really develop their sight. But if a child struggles to maintain their focus, [http://tinyurl.com/ku6vjks ugg boots] or coordinate their eyes like a team, or if they can not remember the code or symbols, these we will help with. If they misread, mix up words or struggle to concentrate, this we can also help.<br><br>We can improve reading, writing and spelling but helping the kid to look at and absorb visual information comfortably and effectively. As a behavioural optometrist, this is exactly a place My group is obsessed with and may create a difference in in your child.<br>We may help them overcome incredible odds in learning by improving their vision, versus just working with sight alone.<br>Frequently, the key about solving learning difficulties is improving a child's vision, and visual skills, and these two combined can prove the definite link between vision and learning.
| | The '''group delay dispersion''' (GDD) of an optical element is the derivative of the [[group delay]] with respect to [[angular frequency]], and also the second derivative of the optical phase. <math>D_2(\omega) = \frac{\partial T_g}{d \omega} = \frac{d^2 \phi}{d\omega^2}</math>. It is a measure of the [[chromatic dispersion]] of the element. A parameter independent of the length of the material is the [[Dispersion (optics)|group velocity dispersion]] (GVD). |
