Ko te rama slit he tohu whaikorero me te maama kanapa e whakamahia ana i te wa o te whakamatautau kanohi. Ka hoatu e koe to Ophthalmologilogilogilogilogilogilogilogilogisty he titiro tata ki nga hanganga rereke i mua o te kanohi, o roto o te kanohi. He taputapu nui hei whakatau i te hauora o ou kanohi me te kitenga i te mate kanohi.