Retinitis pigmentosa (RP) patients typically become blind after a period of years in which their eye sight slowly deteriorates due to photoreceptor degeneration. Generally RP patients develop night-blindness first, then tunnel vision, after which finally the central eye sight diminishes leaving them with basically no eye sight, bar some crude light perception. The [wiki page on RP][1] has more information when needed. Typically, the process from diagnosis of RP to (near) complete loss of eye sight takes years to decades.

However, Chebat et al. [(2007)][2] make mention that their study group, consisting of of congenitally blind subjects, includes one person with RP (see table 1 in the linked article). Hence, this implicates that this particular subject was blind from birth due to effects of RP. 

Is anyone familiar with **newborns blinded by the effects of RP**?
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**Reference**  
[Chebat et al. *Neuroreport* 2007;**18**:1901-4][2]


  [1]: http://en.wikipedia.org/wiki/Retinitis_pigmentosa
  [2]: http://www.researchgate.net/profile/Ron_Kupers/publication/5840241_Tactile-'visual'_acuity_of_the_tongue_in_early_blind_individuals/links/0c96052e83143d4bad000000.pdf
  [3]: http://doi.org/10.1097/WNR.0b013e3282f2a63