Mecacanmed me kahi mea hana hana retinoscope a me ka mea kūʻai aku ma Kina, hana a hiki iāʻoe ke hōʻoia i ka maikaʻi o ka hana. Ināʻaʻoleʻoe eʻike i kāu mea pono'ī e pono ai i ka papa inoa o ka papa hana ma ka papa inoa huahana, hiki iāʻoe ke hoʻokaʻaʻike mai iā mākou, hiki iā mākou ke heluhelu pū me nā lawelawe maʻamau.