Mecanmed ke Baetsi ba Baetsi le barekisi Chaena ea ka ba Wholeratoscopy . Re ka fana ka litšebeletso tsa litsebi le theko e betere ho uena. Haeba u khahloa ke lihlahisoa tsa lihlahisoa tsa Photokeratop , ka kopo ikopanye le rona. Malebela: Litlhoko tsa Bohlokoa: OEM, O IME, o hlophisitsoe ka kopo, 'me u re bolelle litlhoko tsa rona. Re latela boleng ba phomolo ba letsoalo, tšebeletso e inehetseng.