<code id='B9F51E6481'></code><style id='B9F51E6481'></style>
      • <acronym id='B9F51E6481'></acronym>
      <center id='B9F51E6481'><center id='B9F51E6481'><tfoot id='B9F51E6481'></tfoot></center><abbr id='B9F51E6481'><dir id='B9F51E6481'><tfoot id='B9F51E6481'></tfoot><noframes id='B9F51E6481'>
      • <optgroup id='B9F51E6481'><strike id='B9F51E6481'><sup id='B9F51E6481'></sup></strike><code id='B9F51E6481'></code></optgroup>
        5. <b id='B9F51E6481'><label id='B9F51E6481'><select id='B9F51E6481'><dt id='B9F51E6481'><span id='B9F51E6481'></span></dt></select></label></b><u id='B9F51E6481'></u>
          <i id='B9F51E6481'><strike id='B9F51E6481'><tt id='B9F51E6481'><pre id='B9F51E6481'></pre></tt></strike></i>
           


   

   

   
   
   
   
   
   
   
   
   
   
   
   
   

   
   
   
   
   
   
   
  
           
  
           
  
           
   
           
    
           
     
           
      
           
       
      
           
      
           
       
           
        
           
         
           
           
          
           
         
           
         
           
           
          
           
         
           
          
        
           
       
           
       
           
        
           
        
           
        
           
        
           
       
           
      
           
       
      
           
      
           
       
           
       
           
       
           
       
           
        
           
        
          
          00:00 
        
           
       
           
       
           
      
           
      
           
        
        
        
       
           
        00:00 
         
        00:00 
        LIVE 
       
           
        
       
           
        
           
        
           
        
           
        
           
       
           
       
           
       
           
        
        
        
        
        
        
        
        
        
      
           
       
    
    
      
           
       
           
      
           
     
           
     
           
       
     
           
     
           
      
           
      
           
      
           
      
           
       
           
      
           
      
           
      
           
       
           
       
          
         buffering 
       
           
      
           
      
           
       
           
        
           
        
          
          Replay 
        
           
       
           
      
           
       
      
           
      
           
       
           
       
           
        
           
        
           
        
           
       
           
      
           
      
           
      
           
      
           
      
           
       
           
      
           
     
           
     
           
      
           
     
           
     
           
      
           
       
           
        
           
       
           
       
           
        
          
          LIVE 
        
           
        00:00 
         /  
        00:00 
       
           
       
           
        
           
        
           
        
           
         
           
         
           
         
           
         
           
         
           
         
           
        
           
        
           
        
           
       
           
       
           
        
           
        
          
          LIVE 
        
           
       
           
       
           
        
           
        
          
          CC 
        
           
       
           
       
           
        
           
       
           
       
           
       
           
        
           
        
           
         
           
        
           
       
           
       
           
        
           
       
           
      
           
      
           
       
           
        
           
        
           
         
           
         
           
         
           
          
           
          
           
          
           
         
           
        
           
       
           
      
           
      
           
       
           
     
       
           
    
       
           
       
    
  
       
           
   
       
           
       
       
           
      
           
      
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       
           
       Opacity : 
        
      
           
     
           
     
           
     
           
      
           
  
     
           
    
           
    
           
    
           
     
          
       Share: 
     
           
      
     
           
      
      Copy 
     
           
      
    
           
    
          
      Close 
      
    
           
    
           
      
    
           
    
           
   
           
  
           
  
           
    
    
    
   
           
   
           
 
    
   
           
   
           
   
           
    
           
     
           
      
           
       
           
        
           
          
          
         
          
          Wikipedia 

          
          
            
          
          

           
           
        
           
       
           
      
           
     
           
    
           
    
           
     
           
      
           
      
           

                       
          entertainment  
          
                                   
                 
                                      author：knowledge   
                                        
                                      
                                      -
 
browse：4886
                                  
                                    
          
                                    
            
          
 
          Staring at the sun or at bright lights will leave behind a spotty imprint in your field of vision. Here's why.																									Matthew Orr, Alex Hogan/STAT
          Every time we look at the sun — or a camera flash goes off right in our eyes — we end up seeing spots.
          But what are those spots, exactly, and why do we see them?
          advertisement
          It all starts with the cornea, the transparent tissue through which light first enters the eye. The light makes its way to the back of the eye, where tiny, light-sensitive cells known as photoreceptors translate it into images the brain can understand. But when that light is too bright, those photoreceptors are forced to scramble behind the scenes to process the excess.
          In the new episode of “Boddities,” I take a look inside the eye to get to the bottom of bright spots.
          Watch other “Boddities” episodes:
          advertisement
          Related:																			Watch: Episode 4: Why do our ears pop?															
          Related:																			Watch: Episode 3: Why doesn’t your stomach digest itself?															
          Related:																			Watch: Episode 2: Why does it hurt to get water up your nose?															
          Related:																			Watch: Episode 1: Does drinking soda help settle an upset stomach?															
           
 
 
          

                              
          
                                 Previous article：

                                
                                          Drug repurposing or repositioning? The language matters
                                
                            
          Next article：  
                                      
                                          Acadia's Nuplazid fails as schizophrenia medicine in Phase 3 study
                                                                    
          

      
           
      
           
        
           
                                               
        
           focus 
           
                   
      
           
  
  
          
    
          
        
          
            
          
                                                     
                
          leisure time
          
                            
          
        
          
        
    
          

          

    

      
           
     
           


   
    
           
   
           
  
 

  
           
    
           
           
           
            
            Back To Top 
           
           
           
           

            
           
                                                                    
                 
          focus
           
                                      
            
           
          
           
                                                          
             
          hotspot
           
                             
            
           
            
           

                                                         
             
          hotspot
           
               
              
            
           
            
           
                                                         
             
          Wikipedia
           
                             
      
           
 
     
           
     
           
      
          
              MichaelDwyer/APAroundthistimethreeyearsago,whilemostofus navigatedpandemiclife,realestatedevelopersa
             
           
      
          
        © 2013-2023.Company name All rights reserved.Site Map 
         WSS-More Templates  
             Guangdong ICP6name