Can visual acuity testing detect keratitis?

Among various ophthalmic diseases, keratitis is a severe and common condition. Many individuals experience eye pain and a burning sensation following pathogenic infection of the cornea, which may progress to corneal ulcers. Therefore, preventive measures are essential to reduce disease incidence during various pathological conditions. Can visual acuity testing detect keratitis?

Can visual acuity testing detect keratitis?
Visual acuity testing alone cannot determine whether keratitis is present. To confirm a diagnosis of keratitis, patients require a thorough clinical examination. Typically, the most fundamental diagnostic tool is slit-lamp biomicroscopy. Keratitis refers to inflammation of the corneal tissue resulting from diminished corneal defense mechanisms, triggered by either external or internal pathogenic factors. Based on etiology, keratitis is generally classified into infectious keratitis, endogenous keratitis, and locally spreading keratitis. The most common symptoms in patients with keratitis include ocular pain, photophobia, epiphora (excessive tearing), and blepharospasm. These symptoms typically persist until the inflammatory process resolves. Patients experiencing eye pain, photophobia, or excessive tearing should seek immediate evaluation at an ophthalmology clinic.

Keratitis is an inflammatory response caused by weakened corneal defenses, allowing invasion of external pathogens or systemic disease processes into the corneal tissue. It is a frequently encountered ophthalmic condition in clinical practice. Infectious keratitis, in particular, is a leading cause of preventable blindness worldwide. According to causative factors, keratitis can be broadly categorized into infectious and non-infectious forms. Exposure keratitis occurs when the cornea is abnormally exposed to air, leading to desiccation, epithelial sloughing, and secondary inflammation. Filamentary keratitis is characterized by the presence of abnormal, thread-like filaments composed of degenerated corneal epithelium.

When symptoms suggestive of disease arise, prompt medical consultation is essential—early prevention and early treatment are key. We hope this information has been helpful to you.