Dementia disproportionately affects older adults and significantly impacts their quality of life and mental health. Research has explored various assistive technology interventions, with virtual reality (VR) based solutions showing considerable promise. VR provides patients with greater autonomy by enabling them to explore novel environments remotely, engage in immersive reminiscence therapy, and socialize—ultimately enhancing their well-being and life satisfaction. However, the widespread adoption of VR in care facilities remains limited due to development challenges. Creating realistic virtual environments (VE) is complex, and personalizing them for individuals from diverse backgrounds presents scalability issues. A key gap exists between the implementation of VEs with advanced 3D scene generation models, such as Neural Radiance Fields (NeRF), and the usability and accessibility requirements needed to fully leverage VR for older adults. This paper reviews the feasibility of using NeRF for developing VR applications tailored to dementia patients. Addressing these challenges could help bridge technological and practical barriers and enable inclusive and scalable VR interventions in dementia care.