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Borrowed from Old East Slavicляца(ljaca, “lentils”), from Proto-Slavic*lęťa. Because of the roundish, flat seeds of this plant, K. Lībietis used the same word (in 1873) to refer also to the structure inside the eye (crystalline lens), as well as its optical equivalent (lens). In this, he followed the model of GermanLinse.[1]
visus refrakcijas anomālijas veidus mēs labojam ar speciāli pagatavotām stikla lēcām ― all types of refraction anomalies we (can) correct with specially prepared glass lenses
acs ābolā ir četras caurspīdīgas vides: radzene, ūdeņainais šķidrums, lēca un stiklveida ķermenis ― the eyeball has four transparent environments: the cornea, the aqueous humor, the (crystlline) lens and the vitreous body (= humor)
lēcas centrālā daļa novietota tieši pretī varavīksnenes atverei ― the central part of the (crystalline) lens is located directly in front of the iris opening
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