“ETERNA” is a modular recessed lighting fixture designed for suspended ceilings. The philosophy of the design is to create an innovative, comfortable and healthy lighting fixture that offers endless creativity and sustainability for users. The main conceptual terms of the design are fluidity and continuity which best describe the appearence of Eterna. The design language explored in Eterna is the fusion of streaming surfaces as the reclining forms of deserts and waves. Its unique and innovative form enables it to be combined with each other in both axes endlessly. Also, Eterna’s innovative form is beyond the limits of traditional two-dimensional modular lighting structures. It creates a new vision in modular lighting category with its three-dimensional organic form and brings a new dynamism, ambience and aestheic value in various architectural places.