The degree-ratio Sombor index (\( \operatorname{DRSO} \)) is a recently introduced geometric degree-based topological invariant. First, we correct an erroneous lower bound involving the Sombor index and rectify the characterization of extremal graphs from the original work on this index [11]. Subsequently, we investigate the relationship between the \( \operatorname{DRSO} \) index and the spectral radius of a graph. Sharp upper and lower bounds involving the graph's order, size, minimum and maximum degree are obtained. Finally, we establish several relations between \( \operatorname{DRSO} \) and other classical indices, including the Diminished Sombor index, the Sombor index, the Randić index, the harmonic index, and the first Zagreb index.