Object visualization (OV), commonly known as the "mind's eye," involves the remarkable human ability to mentally generate vivid images encompassing rich properties like color, shape, size, texture, and pictorial details. However, inherent cognitive differences among individuals can lead to a decline in OV faculties among designers, posing challenges to critical conceptualization and sketching in the early stages of design, where visual imagination is paramount. This research aims to discern the limitations of existing tools for evaluating OV abilities and proposes refined psychometric methods. Furthermore, it delves into the precise influence of OV on specific design skills and processes, shedding light on the challenges faced by designers with diminished visualization capabilities. Finally, the study explores techniques to enhance or compensate for OV deficiencies in design contexts.