Liftetime of photons in matter

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Let's say we have a photon. When moving in vacuum it has speed c. Due to mr Lorentz it will experience a time t=0 in its own referance frame no matter how far it travels. Is this right? So relative to itself the photon has a lifetime of zero?

If so, how is this affected when it is not in vacum? I know we see it as moving slower because the dieletric constant is different, but how does the photon see it? Is this in anywayrelated to referance frames?
 
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Firstly, photons do not truly have a definable reference frame. Secondly, photons always travel at c, they do not slow down in other mediums. The FAQ in the general physics forums would be a good place to start, there is an article in there, which addresses this misconception.
 

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