Corneal Abrasions vs Ulcers Quiz

<p>Contact lens wearers. (D)</p> Signup and view all the answers

<p>Inserting and removing contact lenses. (A)</p> Signup and view all the answers

<p>24-48 hours (A)</p> Signup and view all the answers

<p>Understanding the mechanism of trauma. (C)</p> Signup and view all the answers

<p>They are often healed by general practitioners. (B)</p> Signup and view all the answers

<p>Herpes simplex (B)</p> Signup and view all the answers

<p>Surface problem of the eye (D)</p> Signup and view all the answers

<p>Abrasions usually have near normal vision (C)</p> Signup and view all the answers

<p>Deeply injected and mucopurulent discharge (D)</p> Signup and view all the answers

<p>Comparison of corneas for clarity (D)</p> Signup and view all the answers

<p>Epithelial defect (C)</p> Signup and view all the answers

<p>Mild hyperemia and watery eye (B)</p> Signup and view all the answers

<p>Round but small pupil (A)</p> Signup and view all the answers

<p>3% Zovirax ointment five times daily (C)</p> Signup and view all the answers

<p>Instill antibiotic agents (C)</p> Signup and view all the answers

<p>Only if symptoms worsen or fail to resolve (D)</p> Signup and view all the answers

<p>Areas of epithelial loss without corneal opacity (B)</p> Signup and view all the answers

<p>The following day (D)</p> Signup and view all the answers

<p>Banana-shaped lesions separated from the limbus (D)</p> Signup and view all the answers

<p>Corneal injuries from vegetable matter (A)</p> Signup and view all the answers

<p>Presence of a dendritic ulcer (D)</p> Signup and view all the answers

<p>Presence of a hypopyon (B)</p> Signup and view all the answers

<p>No epithelial loss is usually seen initially (A)</p> Signup and view all the answers

<p>Improper hygiene and care of lenses (A)</p> Signup and view all the answers

<p>Disciform stroma keratitis (D)</p> Signup and view all the answers

<p>They are usually found centrally in the cornea. (C)</p> Signup and view all the answers

<p>Stromal swelling or infiltration (C)</p> Signup and view all the answers

<p>Recurrent erosion syndrome (A)</p> Signup and view all the answers

<p>Staphylococcal blepharitis (C)</p> Signup and view all the answers

<p>12 to 24 hours (C)</p> Signup and view all the answers

<p>Fluorescein staining that highlights the defect (A)</p> Signup and view all the answers

<p>Tearing of the corneal epithelium (B)</p> Signup and view all the answers

<p>Cloudy cornea (C)</p> Signup and view all the answers

<p>Epithelial barrier disruption (A)</p> Signup and view all the answers

<p>Dendritic ulcer (C)</p> Signup and view all the answers

<p>Ophthalmic ointment instillation (D)</p> Signup and view all the answers

<p>Topical anaesthetic agent (A)</p> Signup and view all the answers

<p>Short acting cycloplegic agent (A)</p> Signup and view all the answers

<p>Acts as a preventative strategy (D)</p> Signup and view all the answers

<p>Steroids and antibiotics combined (C)</p> Signup and view all the answers

<p>Four times a day (D)</p> Signup and view all the answers

<p>Remove lenses until the eye feels normal (A)</p> Signup and view all the answers

A corneal abrasion is a superficial injury to the cornea where the outer layer (epithelium) is removed, but the underlying layers remain intact. It's usually caused by minor trauma and heals quickly.

A corneal ulcer is a deeper injury to the cornea where there is loss of the epithelial layer and often underlying layers. Inflammation and infection are present, making it more serious.

Corneal abrasions typically heal within 24-48 hours. Persistent or worsening symptoms after this time frame suggest a potential ulcer.

Corneal ulcers are more common in patients with weakened immune systems (immuno-compromised), dry eye disease, blepharitis (inflammation of the eyelids), or contact lens wearers.

Contact lenses can trap bacteria, fungi, or amoeba on the cornea, increasing the risk of infection and ulceration.

Corneal abrasions and ulcers cause pain, redness, light sensitivity (photophobia), foreign body sensation, and decreased vision.

Symptoms like persistent pain, worsening vision, and signs of inflammation (redness, swelling) after a suspected corneal abrasion might indicate a corneal ulcer.

Corneal ulcers require immediate referral to an ophthalmologist as they are potentially sight-threatening emergencies.

Abrasions caused by organic materials like plants, animals, or humans are more likely to get infected.

A corneal ulcer refers to a deeper wound in the cornea, often causing significant vision reduction.

A corneal abrasion is a scratch on the surface of the cornea.

Herpes simplex is a common cause of recurrent corneal ulcers.

Examine the eye carefully to distinguish between a corneal abrasion and a corneal ulcer.

Topical anesthetics like amethocaine or lignocaine help examine patients with painful corneal lesions.

Pinhole vision test helps differentiate corneal abrasions from ulcers. Abrasions usually have near normal vision, while ulcers have reduced vision.

A bright and clear cornea indicates an abrasion, while a cloudy cornea signifies a deeper ulcer.

A condition characterized by repeated corneal epithelial detachment, often occurring after a minor corneal abrasion. It typically leads to severe pain, photophobia, and decreased vision upon awakening.

Ulcers that tend to appear at the edges of the cornea, often associated with staphylococcal blepharitis.

A whitish, pus-like accumulation in the anterior chamber of the eye, often a sign of infection.

A dye used to highlight corneal epithelial defects by staining them.

A substance that stains the cornea, indicating a deeper injury that extends beyond the epithelium.

A small amount of blood in the anterior chamber of the eye, often caused by trauma.

A corneal ulcer is a deeper wound in the cornea, affecting the epithelial layer and potentially underlying layers. It's often caused by infection and can be more serious.

Corneal abrasions heal quickly, often within 24-48 hours. If an abrasion isn't healing or symptoms worsen, it could be a sign of a corneal ulcer.

Infectious keratitis is a serious infection of the cornea. This usually requires immediate ophthalmologic intervention.

Patients with a dendritic ulcer need immediate ophthalmic review.

The treatment of an abrasion depends on the history, extent of epithelial loss, age of the patient and the degree of discomfort.

A single instillation of an ophthalmic ointment such as sulphacetamide or chloramphenicol.

Marginal ulcers are treated with a combination of steroids and antibiotics, usually given as a combination agent such as Maxitrol.

Look carefully for a foreign body on the cornea or under the eyelids.

Conjunctivitis is usually bilateral.

A type of corneal ulcer caused by the herpes simplex virus, characterized by a branching, tree-like pattern.

A deeper form of herpes keratitis, where clouding of the cornea and reduced vision are the main symptoms.

Infections of the cornea, often caused by fungal or bacterial organisms, usually following corneal injury.

This is a key symptom of corneal ulcers, where the cornea becomes cloudy and obscures the view of the iris and pupil.

This is a sign of a deeper, more serious corneal ulcer, where the wound affects the deeper layers of the cornea.