As an AI language model, I can provide a speculative list of potential advancements in virtual and augmented reality (VR/AR) technology that could occur by 2023. However, it’s important to note that the future development of these technologies is uncertain, and these predictions are speculative:

1. Enhanced AR Glasses: Improved AR glasses with a sleek design and enhanced display capabilities, making them more immersive and comfortable for extended use.

2. Haptic Feedback Integration: Advancements in haptic technology enabling realistic tactile feedback, allowing users to feel and interact with virtual objects.

3. High-resolution Displays: More affordable and higher resolution VR screens, minimizing the screen-door effect and enhancing visual clarity.

4. Wireless Standalone VR/AR Headsets: Lightweight and wireless standalone VR/AR devices with improved processing power, eliminating the need for external devices.

5. Eye Tracking Technology: Eye tracking becoming a standard feature, allowing for more natural interaction and precise tracking of gaze, improving user immersion and intention recognition.

6. Mixed Reality (MR) Platform Integration: VR and AR combining to create mixed reality experiences, where virtual objects seamlessly interact with the physical world, providing more compelling and realistic simulations.

7. Cloud-Based Rendering: Processing-intensive tasks offloaded to ultra-powerful remote servers, reducing the hardware requirements for VR/AR devices and enabling better graphics quality.

8. AI-generated Environments: AI algorithms creating virtual environments on the fly, generating realistic and dynamic worlds tailored to individual users’ preferences and actions.

9. Advanced Gesture Control: Gesture recognition systems and sensors becoming more sophisticated, enabling precise hand and finger tracking, enhancing user interactivity.

10. Health and Wellness Integration: VR/AR experiences designed to promote mental health, cognitive training, and physical well-being, with applications in therapy, meditation, or virtual fitness.

Remember, this list is purely speculative and may or may not reflect the actual advancements in VR/AR technology by 2023.