Bullous keratopathy

A condition affecting the cornea of the eye

Overview

Bullous keratopathy is a pathological condition of the cornea characterized by the formation of fluid-filled blisters, or bullae, on the corneal surface. This condition often results from endothelial cell dysfunction, leading to corneal edema and subsequent visual impairment.

Pathophysiology

The cornea is composed of several layers, with the corneal endothelium playing a crucial role in maintaining corneal transparency by regulating fluid balance. In bullous keratopathy, damage to the endothelial cells disrupts this balance, causing fluid accumulation in the stroma and the formation of bullae on the epithelium.

Causes

Bullous keratopathy can arise from various causes, including:

• Fuchs' dystrophy
• Surgical trauma, particularly following cataract surgery
• Glaucoma
• Corneal transplant rejection

Symptoms

Patients with bullous keratopathy may experience:

• Decreased visual acuity
• Pain and discomfort due to ruptured bullae
• Photophobia
• Foreign body sensation

Diagnosis

Diagnosis is primarily clinical, supported by slit-lamp examination revealing corneal edema and bullae. Additional tests such as specular microscopy can assess endothelial cell density.

Treatment

Treatment options aim to relieve symptoms and restore corneal clarity. These include:

• Hypertonic saline drops or ointments to reduce edema
• Bandage contact lenses for pain relief
• Corneal transplantation procedures, such as Descemet's stripping endothelial keratoplasty (DSEK) or Descemet's membrane endothelial keratoplasty (DMEK)

Prognosis

The prognosis for bullous keratopathy varies depending on the underlying cause and the success of treatment interventions. Surgical options like endothelial keratoplasty have improved outcomes significantly.

Prevention

Preventive measures focus on minimizing surgical trauma during ocular procedures and managing conditions like glaucoma effectively to reduce the risk of endothelial damage.

Related pages

• Corneal dystrophy
• Keratoconus
• Ophthalmology