The vitreous humor, also known as the vitreous body, is a clear gel-like substance that fills most of the volume of the eye and is devoid of blood vessels. Vitreous detachment occurs due to aging, high myopia, or eye trauma, leading to the appearance of moving spots or floaters and occasional flashes of light in the visual field, sometimes accompanied by visual disturbances and a gradual loss of peripheral vision. Other symptoms of vitreous detachment include the presence of small, dark spots that move in your vision, blurred vision, a gradual loss of peripheral vision, the appearance of a shadow that resembles a curtain in the visual field.