Vitreous Floaters: This condition is characterized by the presence of small, gray or transparent spots in the visual field, which can move as the eye moves. It is a common and usually benign condition, especially in individuals with a history of myopia or after eye surgery.

Migraine Aura: Some individuals with migraines may experience visual auras, which can include moving spots or zigzag patterns. These are usually temporary and can be accompanied by other migraine symptoms like headache and sensitivity to light.
Ocular Migraine: Similar to migraine aura, ocular migraines can cause temporary visual disturbances, including moving spots, but without the headache.
Posterior Vitreous Detachment (PVD): As people age, the vitreous gel in the eye can shrink and pull away from the retina, causing floaters. This condition can also lead to flashes of light and is more common in older adults.

Retinal Detachment: Although less common, a retinal detachment can cause sudden flashes of light and an increase in floaters. It is a medical emergency requiring immediate attention to prevent permanent vision loss.
Retinal Tear: A tear in the retina can also lead to symptoms similar to those of vitreous floaters but is more serious and requires prompt treatment to prevent retinal detachment.
Central Serous Chorioretinopathy (CSC): This condition involves fluid accumulation under the retina, leading to visual disturbances, including blind spots or moving spots. It can be associated with stress and corticosteroid use.

Ocular Lyme Disease: In rare cases, Lyme disease can affect the eyes, leading to various symptoms, including visual disturbances.
Syphilis: Neurosyphilis can cause a range of ocular symptoms, including visual field defects and moving spots, though this is relatively rare.
Choroidal Melanoma: A type of eye cancer that can cause visual disturbances, including moving spots, especially if the tumor is large enough to affect vision.