A corneal keloid is best characterized as which of the following?

A dense, elevated fibrous overgrowth of corneal tissue A corneal keloid is a rare, dense, elevated fibrous overgrowth of corneal tissue which, despite its name, is far less common than its cutaneous counterpart.

A vascularized pannus creeping in from the limbus

A cystic epithelial inclusion within the stroma

A calcified plaque in the interpalpebral cornea

What distinguishes a corneal keloid from an ordinary corneal scar?

Fibrous proliferation exceeds what the injury explains An ordinary scar is an organized healing response proportionate to the injury, whereas a keloid is excessive, disorganized fibrous proliferation extending beyond what the inciting event would explain.

It contains no collagen, only inflammatory cells

It always appears within days of the injury

It stays confined to epithelium and Bowman layer

Which history typically precedes the development of a corneal keloid?

Significant corneal injury, inflammation or surgery A history of prior significant corneal injury, inflammation or surgery in the affected eye is typical, though the interval before the keloid appears can be considerable.

Chronic topical steroid use without any injury

Many years of rigid contact lens wear

Longstanding untreated systemic hypertension

In which group is corneal keloid most frequently reported?

Children and younger patients Corneal keloid is more frequently reported in children and younger patients, although it can occur across a range of ages.

Patients over seventy years of age

Postmenopausal women exclusively

Newborns within the first month of life

How does a corneal keloid appear on slit-lamp examination?

A white to grayish, firm, irregular elevated mass The lesion is a white to grayish-white, densely fibrous, elevated mass with a firm, somewhat irregular texture, unlike smoother corneal opacities.

A translucent gelatinous lesion with feeder vessels

A thin, flat, smooth grey haze in the mid-stroma

A brown pigmented patch with a scalloped margin

Why does a central corneal keloid reduce vision substantially?

Both its opacity and its irregular elevated surface Vision is often significantly affected in central lesions because of both the opacity itself and the irregular, elevated surface contour of the mass.

It compresses the lens and induces myopia

It drags the visual axis toward the limbus

It provokes chronic anterior uveitis

Which histopathologic finding confirms a corneal keloid in excised tissue?

Dense, disorganized collagen proliferation Histopathologic examination of tissue obtained at excision confirms the diagnosis by showing characteristic dense, disorganized collagen proliferation.

Amyloid deposits with apple-green birefringence

Dysplastic squamous epithelium with mitotic figures

Granulomatous inflammation with giant cells

How is a small, peripheral, visually insignificant corneal keloid managed?

Observation, given the generally stable course Small, peripheral or visually insignificant keloids can simply be observed, as these lesions tend to follow a generally stable, at most very slowly progressive course.

Immediate penetrating keratoplasty

A course of topical antimetabolite therapy

Superficial keratectomy with an amniotic graft

What determines whether superficial keratectomy or keratoplasty is chosen for a corneal keloid?

The depth and extent of the individual lesion The surgical approach, from superficial keratectomy through lamellar or penetrating keratoplasty, is tailored to the depth and extent of the individual lesion.

The patient's age at the time of presentation

The interval since the inciting corneal injury

Whether the fellow eye is also affected

What is the main concern after surgical excision of a corneal keloid?

A genuine tendency to recur Corneal keloid has a real tendency to recur after excision, reflecting the same excessive fibroproliferative tendency, so this belongs in pre-surgical counseling and close follow-up.

Progressive endothelial cell loss

Secondary angle-closure glaucoma

Corneal Keloid: Clinical Features & Treatment

A corneal keloid is a genuinely rare entity, a dense, elevated, fibrous overgrowth of corneal tissue that, while sharing its name and some histologic similarity with cutaneous keloids, follows its own distinct clinical pattern and is far less common than its skin counterpart, often developing after significant corneal injury, inflammation, or surgery, particularly in younger patients.

What Makes This Different From an Ordinary Corneal Scar

Unlike an ordinary corneal scar, which represents a relatively organized fibrous healing response proportionate to the original injury, a corneal keloid involves an excessive, disorganized fibrous tissue proliferation extending beyond what would be expected from the inciting injury or inflammatory process alone, producing a distinctly elevated, often quite firm and white mass rather than a flatter, more typical corneal opacity.

Clinical Features

A white to grayish-white, densely fibrous, elevated mass on the corneal surface, often with a firm, somewhat irregular texture distinguishing it from smoother corneal opacities
A history of prior significant corneal injury, inflammation, or surgery in the affected eye is typical, though the interval between the inciting event and keloid development can be considerable
More frequently reported in children and younger patients, though it can occur across a range of ages
Vision is often significantly affected when the lesion involves the central cornea, given both its opacity and its irregular, elevated surface contour

Test your knowledge 10 questions from this article

Diagnostic Evaluation

Slit-lamp examination characterizing the lesion’s appearance, size, and relationship to the visual axis
A detailed history of any prior corneal injury, inflammation, infection, or surgery in the affected eye, relevant to understanding the likely inciting event
Differentiation from other causes of corneal opacity and elevation, including other reparative or proliferative corneal conditions, based on the characteristic clinical appearance and history
Histopathologic examination, when tissue is obtained through excision, can confirm the diagnosis based on characteristic dense, disorganized collagen proliferation

Management

Observation for Stable, Visually Insignificant Lesions

Small, peripheral, or visually insignificant corneal keloids can be observed, given the generally stable, though sometimes very slowly progressive, natural history these lesions can follow.

Surgical Excision

Surgical excision is considered for visually significant lesions, particularly those involving the central visual axis, aiming to restore corneal clarity and improve vision, with the surgical approach, ranging from superficial keratectomy to, for deeper or more extensive lesions, lamellar or penetrating keratoplasty, tailored to the depth and extent of the individual lesion.

Clinical eye photograph illustrating Corneal Keloid

The Real Risk of Recurrence

An important management consideration specific to this condition is a genuine tendency toward recurrence after excision, reflecting the same excessive, disorganized fibrous proliferative tendency responsible for the original lesion, and this recurrence risk should be part of pre-surgical counseling, along with close postoperative monitoring to allow early identification and management of any recurrent proliferation.

Differential diagnosis

A corneal keloid should be distinguished from a dense scar, which is not elevated and does not grow, from a limbal dermoid, which is congenital, from Salzmann nodular degeneration, which is bluish and nodular, and from a fibrous plaque of a neoplasm such as ocular surface squamous neoplasia. The history of injury or inflammation and the growth over time support the diagnosis. Histology shows thick, disorganized collagen with fibroblasts, and no inflammation in the later stage.

Surgical considerations

The surgeon chooses between superficial keratectomy and lamellar or penetrating keratoplasty, depending on the depth. Adjunctive measures such as steroid drops and, in some centers, antimetabolites have been used to reduce recurrence, although the evidence is limited and patients should be told that recurrence can occur. Because the lesion is rare, referral to a corneal specialist is sensible.

Follow-up

Review at short intervals in the first months, then at longer intervals. Take photographs of the cornea and keep records of the visual acuity so that early recurrence can be recognized. Counsel patients to report changes in vision, redness, or a new white area on the cornea.

Counselling about expectations

Explain that the lesion is benign but can be stubborn, that surgery may need to be repeated, and that glasses or contact lenses may be needed afterward to correct the vision. Patients with a history of keloids elsewhere should mention this, since a tendency to excessive scarring is relevant to surgical planning.

Prognosis

Corneal keloid, once surgically excised, carries a meaningfully higher recurrence risk than more typical corneal scarring or opacity, reflecting its underlying excessive fibroproliferative tendency, and this recurrence potential should shape both surgical planning and the ongoing follow-up plan after excision.

Individualized management, weighing the degree of visual impact against the genuine risk of recurrent proliferation after surgical intervention, supports the most appropriate approach for a given patient, with careful, sustained follow-up remaining important regardless of which specific management path is chosen.

References

Lahoti S, Weiss M. Corneal keloid. Am J Ophthalmol. 1989;108:305-306.
Bourgeois J, Yau B, Wilson DJ, Selva D. Corneal keloid. Cornea. 2011;30:1493-1495.
Rao SK, Fogla R, Rajagopal R, Sitalakshmi G, Padmanabhan P. Corneal keloid: report of two cases. Indian J Ophthalmol. 1999;47:181-183.
Farrell TA, Alward WL, Verdick RE, Nerad JA. Corneal keloid. Am J Ophthalmol. 1993;116:247-249.

Test yourself

A few questions straight from this article.

1 / 10 0 correct

A corneal keloid is best characterized as which of the following?
A corneal keloid is a rare, dense, elevated fibrous overgrowth of corneal tissue which, despite its name, is far less common than its cutaneous counterpart.
What distinguishes a corneal keloid from an ordinary corneal scar?
An ordinary scar is an organized healing response proportionate to the injury, whereas a keloid is excessive, disorganized fibrous proliferation extending beyond what the inciting event would explain.
Which history typically precedes the development of a corneal keloid?
A history of prior significant corneal injury, inflammation or surgery in the affected eye is typical, though the interval before the keloid appears can be considerable.
In which group is corneal keloid most frequently reported?
Corneal keloid is more frequently reported in children and younger patients, although it can occur across a range of ages.
How does a corneal keloid appear on slit-lamp examination?
The lesion is a white to grayish-white, densely fibrous, elevated mass with a firm, somewhat irregular texture, unlike smoother corneal opacities.
Why does a central corneal keloid reduce vision substantially?
Vision is often significantly affected in central lesions because of both the opacity itself and the irregular, elevated surface contour of the mass.
Which histopathologic finding confirms a corneal keloid in excised tissue?
Histopathologic examination of tissue obtained at excision confirms the diagnosis by showing characteristic dense, disorganized collagen proliferation.
How is a small, peripheral, visually insignificant corneal keloid managed?
Small, peripheral or visually insignificant keloids can simply be observed, as these lesions tend to follow a generally stable, at most very slowly progressive course.
What determines whether superficial keratectomy or keratoplasty is chosen for a corneal keloid?
The surgical approach, from superficial keratectomy through lamellar or penetrating keratoplasty, is tailored to the depth and extent of the individual lesion.
What is the main concern after surgical excision of a corneal keloid?
Corneal keloid has a real tendency to recur after excision, reflecting the same excessive fibroproliferative tendency, so this belongs in pre-surgical counseling and close follow-up.

Ahmed Ophthalmologist

Writes and reviews the clinical articles on Educate. Every post is checked against peer-reviewed sources before it goes live.

Corneal Keloid: A Rare, Densely Fibrous Overgrowth That Follows Its Own Rules