Complications of Contact Lens Wear
Definition Inflammatory, metabolic, mechanical, or infectious events that are associated with contact lens use. Key Features • Overall safety record of contact lenses is excellent. • Low-Dk lenses, overnight wear,…
Management of Corneal Thinning, Melting, and Perforation
Definition Management of full-thickness or partial-thickness loss of corneal tissue. Key Features • Concurrent, aggressive treatment of the underlying infectious or inflammatory condition. • Multiple treatment options, depending on the…
Patient Workup for Cataract Surgery
Definition Preoperative preparation prior to planned lens extraction. Key Features Ophthalmic and medical considerations in the preoperative evaluation of lens surgery include: • The morphology of lens opacities and the…
Surgical Ocular Surface Reconstruction
Definition Limbal stem cell deficiency is a devastating condition that can occur as the end result of a diverse set of etiologies. There are multiple surgical options to treat this…
Dry Eye Disease
Definition A multifactorial disease of the ocular surface characterized by deficient tear production and/or excessive tear evaporation, leading to loss of homeostasis of the tear film. Key Features • Symptoms:…
Corneal and External Eye Manifestations of Systemic Disease
Definition Disorders with corneal, external, and other anterior segment manifestations of systemic diseases and syndromes. Key Feature • External and anterior segment ocular anomalies as well as systemic abnormalities. Associated…
Stromal Corneal Dystrophies
Definition An inherited, bilateral disorder in which an abnormal substance accumulates in the cornea. Key Features • Characteristically bilateral. • Progressive. • Isolated to the cornea. Associated Features • Usually…
Corneal Degenerations
Definition Secondary deterioration or deposition in the cornea, distinct from dystrophies. Key Features • Common. • Bilateral usually. • Typically does not affect vision. Associated Features • Increased prevalence with…
Congenital Corneal Anomalies
Definition Developmental abnormalities of the cornea present at birth. Key Features • Inherited or sporadic but not acquired. • Generally involve dysgeneses of anterior segment mesenchyme. • Frequent association with…
Diseases of the Corneal Endothelium
Definition Diseases affecting the innermost layer of the cornea, which is in charge of regulating the hydration state of the corneal stroma. Key Features • Bilateral presentation. • Corneal clarity…
