Glaucoma: A Silent Threat with 10 Telltale Signs

6. Sudden Visual Disturbance

Many people with glaucoma see images that doctors refer to as sudden visual disturbances. Individuals with migraines are particularly familiar with these disturbances. Some people experience photopsia or bright flashes of light similar to a camera flash. Other people experience metamorphopsia, which is a distortion of the size, color, or shape of visual images. Metamorphopsia causes linear objects, such as grids or lines, to look curvy. It is also common to have blind spots near the center of the eyes' field of vision. These blind spots may slowly migrate across the visual field.