Photopsias: A Key to Diagnosis

Area of Science:

• Ophthalmology
• Retinal Diseases
• Visual Disturbances

Background:

• Photopsias, or the perception of flashes of light, are common symptoms in patients with vitreoretinal conditions.
• Identifying the underlying cause of photopsias is essential for appropriate clinical management.

Purpose of the Study:

• To characterize the features of photopsias in patients with vitreoretinal diseases.
• To determine the causes of photopsias in this patient population.

Main Methods:

• A cross-sectional study evaluated 217 eyes from 169 consecutive patients presenting with photopsias.
• Photopsia assessment included laterality, morphology, color, location, duration, frequency, diurnal appearance, stimuli, and associated symptoms.
• Clinical features were correlated with identified causes of photopsias.

Main Results:

• Thirty-two causes of photopsias were identified, with posterior vitreous detachment (PVD) being the most common (39.7%).
• Other significant causes included retinal tear (8.9%), neovascular age-related macular degeneration (AMD) (7.9%), and rhegmatogenous retinal detachment (RRD) (7.5%).
• Photopsia characteristics varied significantly based on the cause, with PVD typically presenting as quick, white flashes in the dark, while neovascular AMD often appeared as central, repetitive flashes.

Conclusions:

• A detailed patient history focusing on photopsia characteristics can reveal the underlying cause, even when not immediately apparent.
• The historical assessment of photopsias plays a critical role in guiding management strategies for vitreoretinal patients.