Floaters
Floaters are caused by a jelly-like substance called vitreous (VIT-ree-us). When a portion of the vitreous liquifies, it casts a shadow on the retina, causing the small dots, specks or lines that suddenly appear in your field of vision. In most cases, floaters are not harmful to the vision, and require no treatment. Age is a common cause of floaters due to the vitreous jelly beginning to shrink and pull on the retina. Floaters are also common after eye surgery, such as cataract extraction. They often occur in people who are very nearsighted. There are certain instances when floaters can be serious, however, and may be a warning sign of a retinal tear (TAIR). This can lead to a detachment, hemorrhage, and infection. A traumatic injury, as well as illness such as severe diabetes mellitus or hypertension can cause floaters. If you experience the sudden appearance of a large number of floaters, flashes of light, or floaters that worsen over time, consult an eye care specialist. This information is not intended to be a substitute for diagnosis or medical care. Consult a licensed optometrist or ophthalmologist for further information.