Pigment spots related to scleral emissaries in Eskimos, Mongols, and Caucasians
Abstract. Examinations of a series of 1241 subjects showed episcleral pigment spots bearing relation to scleral canal emissaries to be most frequent among Eskimos (prevalence 85%), somewhat less frequent among Mongols (68%), and the rarest among white Northern Europeans (16%). The prevalence is the...
| Published in: | Acta Ophthalmologica |
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| Main Author: | |
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
Wiley
1985
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| Online Access: | http://dx.doi.org/10.1111/j.1755-3768.1985.tb01540.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1755-3768.1985.tb01540.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1755-3768.1985.tb01540.x |
| Summary: | Abstract. Examinations of a series of 1241 subjects showed episcleral pigment spots bearing relation to scleral canal emissaries to be most frequent among Eskimos (prevalence 85%), somewhat less frequent among Mongols (68%), and the rarest among white Northern Europeans (16%). The prevalence is the highest among women and rises very little with increasing age. The pigmentation is most often bilateral in Eskimos (66%), more rarely so in Caucasians (18%). It is most often localized superiorly (54%). Then follows in decreasing order to frequency: inferiorly (26%), nasally (13%), and – significantly more rarely – temporally (7%). The pigmentation is most often related to an artery (90%), most often one running a radial course (39%) or in the incyclo‐direction (32%). Its average length in Caucasians is 1.1 mm. Pigmentations are significantly related to the colour of the iris (visible in 8% of blue irides, against in 40% of brown). |
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