Sudden white haze in the eyes is usually caused by ophthalmopathy or optic nerve disease. The diagnosis needs to be clarified again based on the accompanying signs and symptoms, and the cause should be treated symptomatically. If the eye is congested, red and has a lot of eye discharge, it is seen as inflammatory stimulation of conjunctivitis. If there is photophobia, tearing, pain, or eyelid spasm, it may be keratitis. The accompanying ocular distention, high intraocular pressure, corneal edema, shallow anterior chamber, and dilated pupil are usually acute angle-closure glaucoma. The presence of posterior corneal deposits, atrial clouding, pupil narrowing, or posterior adhesions is usually iridocyclitis. Black shadows in front of the eyes that drift with eye movements are usually caused by vitreous hemosiderosis and intermediate uveitis. Retinal detachment is usually accompanied by a sense of obscuration and retinal edema and distortion. Optic neuritis shows optic papilla congestion and edema, and retrobulbar optic neuritis is accompanied by painful eye rotation.