Thygeson's superficial punctate keratitis

Area of Science:

• Ophthalmology
• Corneal Diseases
• Immunology

Background:

• Thygeson's superficial punctate keratitis (TSPK) is a chronic and recurrent corneal epitheliopathy.
• The exact cause and best treatment for TSPK remain undetermined despite decades of study.

Purpose of the Study:

• To provide an updated literature review on Thygeson's superficial punctate keratitis.
• To propose a step-by-step management protocol for TSPK based on current evidence.

Main Methods:

• A comprehensive literature search was conducted on PubMed.
• Keywords included "Thygeson's superficial punctate keratitis," "punctate keratitis," "etiology," "management," and "treatment."
• Reviewed literature was synthesized to summarize findings.

Main Results:

• Current theories on TSPK etiology include viral infection and immune-mediated responses.
• Topical corticosteroids are the primary treatment, but immunomodulatory agents show promise as alternatives or adjuncts.
• Photorefractive keratectomy/phototherapeutic keratectomy (PRK/PTK) may be used for refractory cases.

Conclusions:

• The precise etiology of TSPK requires further investigation.
• More clinical trials are needed to compare corticosteroids, tacrolimus, and cyclosporine A (CSA).
• Additional evidence is necessary to support the use of PRK/PTK in TSPK management.