What causes corneal Dellen?

Corneal dellen are a rare and serious complication after primary pterygium surgery with conjunctival limbal autograft (CLAG) with fibrin glue without antimetabolites. Dellen are caused by interruptions of the tear film and local dehydration of the cornea. If untreated, they may lead to corneal perforation.

Can pellucid marginal degeneration cause blindness?

Pellucid marginal degeneration (PMD) is a degenerative corneal condition, often confused with keratoconus. It typically presents with painless vision loss affecting both eyes. Rarely, it may cause acute vision loss with severe pain due to perforation of the cornea.

What is Terrien?

Terrien’s marginal degeneration is an uncommon but distinct variety of marginal thinning of the cornea. It causes a slowly progressive non-inflammatory, unilateral or asymmetrically bilateral peripheral corneal thinning and is associated with corneal neovascularization, opacification and lipid deposition.

What is marginal keratitis?

Marginal keratitis is an inflammatory disease of the peripheral cornea, characterized by peripheral stromal infiltrates which are often associated with epithelium break down and ulceration.

How do you cure a Dellen?

Overall, corneal dellen usually heal within 10–15 days [1]. Treatment consists of a reduction or elimination of the contributing perilimbar elevation and a rapid rehydration with artificial tears, eye ointment and patching [2]. In some cases, even a contact lens can be used to support the repairing process.

Can pellucid marginal degeneration be treated?

In this day and age of advanced refractive surgery, a well-tested practice such as a tectonic corneal transplant is very useful in the treatment of corneal pellucid marginal degeneration.

What is the treatment for marginal keratitis?

Treatment directed toward blepharitis should also be prescribed: recommendation of adequate eyelid hygiene, topical antibiotic ointments, oral antibiotics if necessary (doxycycline, tetracyclines, or azithromycin) and short courses of topical steroids can be useful to control underlying blepharitis.

How do you get marginal keratitis?

What causes marginal keratitis? The most common cause of marginal keratitis is your body having a reaction to bacteria, called staphylococci. This is one type of normal bacteria that lives on your skin. An overgrowth of staphylococcal bacteria on the eyelid margins and on the eyelashes can lead to problems.

What does Dellen mean?

[ dĕl′ən ] pl. n. Shallow excavations along the outer edge of the cornea that are caused by localized dehydration.