Ikhebula le-Optical nekhebula zivame kakhulu ekuphileni kwethu kwansuku zonke, zenza ukuxhumana kwethu. Abantu abaningi bayisebenzisa kakhulu, kodwa ngokuvamile abakwazi ukusho umehluko.
Eqinisweni, inani elikhulu labantu lizophatha lezi zinhlobo ezimbili zekhebula ngendlela efanayo, ngisho noma zibukeka zifana ngokubukeka, empeleni zihluke kakhulu.