Dark clouds before the eyes manifest clinically as obscured vision and visual field defects, which may be caused by conditions such as corneal foreign bodies, corneal scarring, lens or vitreous clouding and macular lentigines, and accumulation of blood in the vitreous cavity.
Conditions such as blocked vision can occur due to lesions that occur in the transmission of light or in key areas of the transmission of vision formation. For example, cloudiness, macular opacities, or white spots left after corneal damage, infection, or ulceration can lead to these manifestations and thus affect vision, as can blood in the vitreous cavity and lens clouding.
In addition, diseases that occur in key areas of vision formation, such as macular tear, retinal detachment, and severe glaucoma, can result in visual field defects due to destructive damage to structures such as the macular optic nerve.
It is recommended to consult a doctor when black clouds appear in front of the eyes, and follow the doctor’s instructions to improve the relevant auxiliary examinations and take corresponding treatment measures according to the specific situation.