Abuur nooc ka mid ah weedhan adag Waxaa jira saddex nooc oo ballaadhin ah, kuwaas oo dhammaantood laga soo qaatay Fresnel prisms.
Dabcan, nooc ka sii adag ee jumlada ayaa ah "Waxaa jira saddex nooc oo ballaadhin ah, kuwaas oo dhammaantood laga soo qaatay Fresnel prisms: Nidaamka Wacyigelinta Goobta Muuqaalka ee Gottlieb, muraayadda Chadwick hemianopsia, iyo muraayadda EP ee jiifka ah. "