<code id='BB4275241A'></code><style id='BB4275241A'></style>
    • <acronym id='BB4275241A'></acronym>
      <center id='BB4275241A'><center id='BB4275241A'><tfoot id='BB4275241A'></tfoot></center><abbr id='BB4275241A'><dir id='BB4275241A'><tfoot id='BB4275241A'></tfoot><noframes id='BB4275241A'>

    • <optgroup id='BB4275241A'><strike id='BB4275241A'><sup id='BB4275241A'></sup></strike><code id='BB4275241A'></code></optgroup>
        1. <b id='BB4275241A'><label id='BB4275241A'><select id='BB4275241A'><dt id='BB4275241A'><span id='BB4275241A'></span></dt></select></label></b><u id='BB4275241A'></u>
          <i id='BB4275241A'><strike id='BB4275241A'><tt id='BB4275241A'><pre id='BB4275241A'></pre></tt></strike></i>

          fashion

          fashion

          author:focus    Page View:387
          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?

          focus

          How one medical school became remarkably diverse
          How one medical school became remarkably diverse

          ThefirstclassattheUniversityofCalifornia,Davismedicalschool,in1972,waspredominantlywhiteandmale.Chri

          read more
          Anxious about a speech? A startup wants you to pop a minty cardiac drug
          Anxious about a speech? A startup wants you to pop a minty cardiac drug

          APSTockThepillworkslikemagic,peoplewho’veuseditsay,toquelltheiranxietyaroundpublicspeaking.Fordecade

          read more
          Food as medicine: CMS rules hamper 'prescribing' of fruits, veggies
          Food as medicine: CMS rules hamper 'prescribing' of fruits, veggies

          AdobeSometimes,anappleadayreallyisjustwhatthedoctorordered.Andforthepastseveralyears,organizationsli

          read more

          Second House panel advances two

          Rep.CathyMcMorrisRodgers(R-Wash.)chairsaHousepanelthatadvancedtelehealthlegislation.SusanWalsh/APWAS