SightFrame: Vision Simulator

SightFrame is an interactive vision simulation and eye-health education app. Local, real-time image processing helps you experience how different vision conditions may affect the world around you, while eye charts and guided self-checks encourage better everyday vision awareness. Key features • Simulate myopia, astigmatism, presbyopia and red-green color vision differences • Adjust simulation strength and observe changes instantly • Use the camera for an optional real-time, on-device simulation • Compare the original and simulated views side by side • Explore classroom, road-sign and nighttime scene presets • View a standard directional E eye chart • Run a guided vision self-check with distance selection, screen calibration, separate-eye testing and reference notes • Save screenshots and share through the system share sheet • Choose a light or dark appearance • Use the app in Simplified Chinese or English Privacy by design Camera frames are processed only on your device. They are not recorded or uploaded. SightFrame includes no advertising, third-party analytics or behavioral tracking SDKs. Preferences and usage records remain on the device. Important notice Simulations, vision self-checks and educational content are provided only for experiential and general wellness purposes. They do not constitute a medical diagnosis, treatment recommendation or prescription. Consult a qualified eye-care professional if you experience vision loss, eye discomfort or other concerns.