गुदियै, बेयो गोजानसिम नुहुरनायनि थाखाय टेलीस्कोपिक खान्थि महरै फेदेरनाय आरो खाथिनि खामानिफोरनि थाखाय ऑप्टिकल एबा इलेक्ट्रॉनिक फेदेरनाय बाहायनायनि गेजेरजों जायो।
Primarily, this is by use of magnification in the form of telescopic systems for distance vision and optical or electronic magnification for near tasks.