When the ulcer on the corneal surface heals, the connective tissue within the cornea proliferates and a corneal scar is formed, which, depending on the thickness, can be classified as corneal cloudiness, corneal opacity and corneal leukoplakia. All of the above scarring can cause refractive interstitial clouding and affect vision.
In addition, complications of keratitis, such as iridocyclitis, anterior pole cataract and iris detachment, can cause inflammatory exudation, pus accumulation in the anterior chamber and the development of lens clouding, which can also affect vision, with patients experiencing blurred vision.