● Yilensi enokuthi ihlangabezane neemfuno ezilungelelanisiweyo kwiimeko ezininzi zesicelo ezifana nokusetyenziswa kwansuku zonke / imidlalo / ukuqhuba / iofisi (ukwandisa kwaye ulungise izahlulo ezahlukeneyo zelensi)
● Uluhlu lwesihlwele olusebenzayo: abantu abaphakathi kunye nabantu abadala - kulula ukubabona kude nakufuphi / abantu abasesichengeni sokukhathala okubonakalayo - anti-ukudinwa / ulutsha - bacotha ukuqhubeka kwe-myopia