Ezi glasi zelanga zabantwana zizinto zeempahla zamehlo eziphambili ezenziwe ngokukodwa kubantwana engqondweni. Isebenzisa isakhelo sejometri kunye neelensi zejometri ezisebenza ngokumangalisayo kwaye zigcwele uyilo. Ngenxa yokuba isakhelo senziwe ngeplastiki yeprimiyamu, kukhululekile ngakumbi ukunxiba kunye nokukhanya. Ukubonelela ngakumbi ngeemfuno ezahlukeneyo zabaxumi abahlukeneyo, imveliso ikwavumela ukwenziwa kwephakheji yangaphandle yeglasi kunye nelogo.
Ezi glasi zelanga zabantwana ziquka isakhelo sejometri kunye noyilo lwelensi ukuze zihambelane ngcono neemfuno zabasebenzisi abancinci. Abantwana abanxiba iiglasi bazithemba ngakumbi kwaye bathandeka ngenxa yoyilo lwabo olwahlukileyo, oludibanisa ifashoni kunye nobuntu.
Ukongeza ekuqinisekiseni ubunzima obuncinci beefreyimu, sisebenzisa imathiriyeli yeplastiki yeprimiyamu ukuze sibanike ukomelela okwaneleyo. Abantwana baya kukwazi ukusebenzisa iifreyimu ngokukhululeka okukhulu kuba ubuso babo abuyi kuxinzelelwa ngamandla bubunzima bezibuko.
Sinikezela ngeenkonzo zokwenza ngokwezifiso ukupakishwa kweglasi kunye neelogo ukujongana neemfuno zabathengi abahlukeneyo. Abathengi banokuphucula ukwahluka kunye nokuqhelana kwemveliso ngokongeza ibhrendi okanye igama labo ngokwenza uphawu lwelogo. Abathengi banokwenza iprimiyamu yoyilo lokupakisha kwiiglasi zabo ukuze zilungele ukuthanda kwabo kunye neemfuno zentengiso. Olu phawu lugxininisa umgangatho ophezulu kunye nokufaneleka kwemveliso.
Ukongeza ekufezekiseni iminqweno yabantwana yesimbo kunye nokungafani, ezi zibuko zelanga zabantwana zikwaqwalasela ukunxiba induduzo kunye nobugcisa obuhle beenkcukacha zemveliso. Le mveliso lukhetho olukhulu lwezibuko zelanga zabantwana ngenxa yoyilo lwayo olukhaphukhaphu, ukwakhiwa kweplastiki yeprimiyamu, kunye nesakhelo sejometri kunye noyilo lwelensi. Ngaphaya koko, iinkonzo ezenzelwe wena zikwajongana neemfuno ezizodwa zabaxumi abahlukeneyo. Ezi glasi zelanga zabantwana ziyindlela enkulu yokusetyenziswa komntu ngamnye okanye isiganeko sokwazisa uphawu.