What was the scale that Coon used? According to him gheg highlanders have in average 45% light eyes.
i think the Martin scale (not Martin-Schultz) because if i remember correctly very light eyes in Coon's work are numbered 16 , 15 , 14 etc..
you can find it here at page 207 : http://www.persee.fr/web/revues/home...8_num_3_3_1417
That's not true. Livi's survey realised in the XIX century didn't consider hazel, light brown and amber eyes as light eyes, but only blue, grey and green. While in the study regarding Sardinians by Cosseddu realised in 1983, the percentage of true light eyes (pure blue, grey and green) (based on Martin Shultz scale) is 16%.
this is instead the % including light and mixed eyes from the same study based on martin shultz scale:
http://oi41.tinypic.com/ajt9v9.jpg
that's correct. That percentage of pure light eyes is also confirmed from a previous study by the anthropologist Carlo Maxia entitled "LE CARATTERISTICHE DELLA PIGMENTAZIONE DEI CAPELLI, DELLE IRIDI E DELLA CUTE NEI GIOVANETTI DAI 6 AI 14 ANNI IN 123 COMUNI E FRAZIONI DELLA SARDEGNA":
blue 4,24%
grey 5,37%
green 6,27%