Lilense tsa optical tse fetolang mebala ke tsa likhalase tsa letsatsi le letsatsi, ofisi ea kahare, lipapali tsa kantle, li ka apesoa. Haholo-holo ho ea phomolong, basebetsi ba feteletseng lebōpong la leoatle, lehloa kapa tropike, ho nka lifoto, bohahlauli, batho ba chesehelang ho tšoasa litlhapi, batho ba lilemong tse bohareng le maqheku kapa mahlo a photophobia, ba hloka ho roala likhalase tsa mahlo, myopia, mesebetsi ea ka ntle hangata e fapanyetsana bacha, ho lelekisa feshene. lihlopha tsa bacha.