Enlarged blind spots in chorioretinal inflammatory disorders

Area of Science:

• Ophthalmology
• Retinal Diseases
• Inflammatory Eye Conditions

Background:

• Multifocal choroiditis and panuveitis (MCP), punctate inner choroidopathy (PIC), multiple evanescent white dot syndrome (MEWDS), and diffuse subretinal fibrosis syndrome share overlapping clinical features.
• Distinguishing these entities is crucial for accurate diagnosis and management.

Purpose of the Study:

• To characterize patients with MCP, PIC, MEWDS, and diffuse subretinal fibrosis syndrome.
• To determine if these conditions represent distinct diseases or a spectrum of related disorders.

Main Methods:

• Prospective and retrospective follow-up of 79 patients diagnosed with these conditions.
• Clinical evaluation, including visual acuity, visual field testing, and fundus examination.

Main Results:

• MCP patients experienced visual loss and field defects due to lesions and recurrent inflammation, particularly around the optic nerve.
• PIC patients showed enlarged blind spots and other field defects related to fundus lesions.
• MEWDS presented with minimal inflammation and symmetrical lesions, leading to minimal scarring and improved visual fields.
• Diffuse subretinal fibrosis syndrome was characterized by posterior pole lesions, severe scarring, and significant visual loss.

Conclusions:

• While enlarged blind spots are common, clinical, angiographic, and electroretinographic findings support MCP, PIC, MEWDS, and diffuse subretinal fibrosis syndrome as separate entities.
• Prognosis varies, with MEWDS and PIC showing better visual field recovery compared to MCP and diffuse subretinal fibrosis syndrome.