He aha ka ʻālohilohi i ka pōʻeleʻele no ka ʻoki pākaukau ʻoki?

Me nā mea photochromic hiki ke hoʻopaʻa i ke kukui UV a me ka ikehu wela, a laila hāʻawi i ka mālamalama ma lalo o ka pōʻeleʻele.