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Corneal edema can also occur as the result of compromised endothelial function due to intraocular inflammation or other causes. Excess hydration of the corneal stroma disrupts the normally uniform periodic spacing of Type I collagen fibrils, creating light scatter.
Iridocorneal endothelial (ICE) syndromes are a spectrum of diseases characterized by slowly progressive abnormalities of the corneal endothelium and features including corneal edema, iris distortion, and secondary angle-closure glaucoma. [1] [2] [3] ICE syndromes are predominantly unilateral and nonhereditary.
Collectively, these symptoms constitute corneal exhaustion syndrome, which is associated with corneal endothelium abnormalities including edema, polymegethism, irregular mosaic, and pigment deposition. Patients with corneal exhaustion syndrome suffer from compromised corneal endothelium resulting from chronic hypoxia and acidosis. These ...
A common scenario involves prolonged corneal swelling or edema following cataract surgery or other types of ocular surgery. Hence, patients with a history of Fuchs' dystrophy may be at a greater risk of corneal edema after ocular surgery as they have fewer functioning endothelial cells. [citation needed]
The appearance of the cornea is similar to that in congenital glaucoma but without increased corneal diameter and elevated intraocular pressure. [14] Posterior polymorphous corneal dystrophy (PPMD, PPCD) [15]: PPCD, also known as Schlichting dystrophy, is an autosomal dominant disorder of the corneal endothelium and Descemet’s membrane. It is ...
Most patients remain asymptomatic and corneal edema is usually absent. Congenital hereditary endothelial corneal dystrophy is characterized by a diffuse ground-glass appearance of both corneas and markedly thickened (2–3 times thicker than normal) corneas from birth or infancy. [citation needed]
If the endothelium can no longer maintain a proper fluid balance, stromal swelling due to excess fluids and subsequent loss of transparency will occur and this may cause corneal edema and interference with the transparency of the cornea and thus impairing the image formed. [14]
Bullous keratopathy, also known as pseudophakic bullous keratopathy (PBK), is a pathological condition in which small vesicles, or bullae, are formed in the cornea due to endothelial dysfunction. In a healthy cornea, endothelial cells keeps the tissue from excess fluid absorption, pumping it back into the aqueous humor. When affected by some ...