Pigment epithelial detachment in the elderly. Clinical differentiation, natural course and pathogenetic implications

Area of Science:

• Ophthalmology
• Retinal Diseases
• Medical Imaging

Background:

• Serous pigment epithelial detachments (PEDs) are a common finding in elderly patients.
• Characterizing their angiographic appearance, natural course, and prognosis is crucial for understanding disease progression.
• Differentiating PED subtypes based on angiography can reveal specific clinical and morphological patterns.

Purpose of the Study:

• To characterize the angiographic appearance, natural course, and prognosis of serous PEDs in elderly individuals.
• To differentiate PEDs based on angiographic characteristics.
• To analyze the clinical, visual, and morphological course of different PED subtypes.

Main Methods:

• Prospective analysis of 101 consecutive patients (53-87 years) with serous PED and drusen.
• Utilized fluorescein angiography and indocyanine green angiography for detailed imaging.
• Classified PEDs into polypoidal choroidal vasculopathy (PCV)-associated, vascular, and avascular types.

Main Results:

• Identified PCV-associated PED (13.9%), vascular PED (71.2%), and avascular PED (14.9%).
• All PED types initially caused similar visual loss, with avascular PEDs being smaller than vascular PEDs, which were smaller than PCV-PEDs.
• Follow-up revealed initial enlargement followed by regression in all PEDs, associated with progressive visual loss and complications like RPE atrophy or disciform scars.

Conclusions:

• Despite varying associations, all serous PEDs exhibit a similar clinical course regarding visual loss and structural changes (enlargement/regression).
• This suggests a common pathogenetic mechanism involving a hydrophobic barrier in Bruch's membrane leading to fluid accumulation.
• Understanding these commonalities aids in predicting prognosis and managing serous PEDs.