Ubuninzi bamandla okukhanya nakwesiphi na isixhobo se-LED okanye i-laser therapy sinokuvavanywa 'ngemitha yamandla elanga' - imveliso edla ngokuba novakalelo ekukhanyeni kuluhlu lwe-400nm – 1100nm – inika ufundo kwi-mW/cm² okanye W/m² ( 100W/m² = 10mW/cm²).
Ngemitha yamandla elanga kunye nerula, unokulinganisa amandla okukhanya kwakho ngomgama.
Unokuvavanya nayiphi na i-LED okanye i-laser ukufumana ubuninzi bamandla kwindawo ethile. Izibane ze-spectrum ezigcweleyo ezifana ne-incandescents kunye nezibane zokushisa azikwazi ukuvavanywa ngale ndlela ngelishwa kuba uninzi lwemveliso alukho kuluhlu olufanelekileyo lonyango olukhanyayo, ngoko ufundo luya kunyuswa. IiLaser kunye nee-LED zinika ufundo oluchanekileyo kuba zikhupha kuphela amaza amaza +/-20 obude bazo obuchaziweyo. Iimitha zamandla 'zelanga' ngokucacileyo zenzelwe ukulinganisa ukukhanya kwelanga, ngoko ke azilungelelaniswanga ngokugqibeleleyo kumlinganiselo wokukhanya kwe-LED enye - ufundo luya kuba ngumfanekiso webhola kodwa uchaneke ngokwaneleyo. Ichaneke ngakumbi (kwaye iyabiza) iimitha zokukhanya ze-LED zikhona.