Most often photopsia when encountered in clinical practice is related to vitreous changes that cause entoptic phenomenon. Unfortunately, the symptoms associated with flashing lights might represent something completely unrelated to vitreoretinal phenomena, namely a vascular, neoplastic, or neurologic etiology. Most often these conditions carry significant morbidity, even mortality concerns and can't be missed. This course will examine the differences in presentation and cite several case examples of photopsia not related to vitreoretinal conditions such as giant cell arteritis, artery occlusion, patent foramen ovale, neoplastic lesions, Purtscher-like retinopathy, and cerebral aneurysm.   Entoptic phenomenon are visual perceptions produced or influenced by various structures within the eye. A detailed history and dilated funduscopic examination are essential in evaluating and completing a comprehensive ocular evaluation.

Course Code:



Joseph Shovlin, O.D.



AOA Expiration Date:


Related News

Partners in care

A successful practice takes a village—doctors of optometry and paraoptometric staff—to make it work and even prosper. Toward that end, the AOA has created a trove of practice management tools and services that can power practices forward in a profession and health care landscape that increasingly demands doctors practice at their highest levels and creates greater opportunities to develop and empower paraoptometric staff. These days, change is out of necessity.

4 tips for handling payer clawbacks: What the experts say

A recent #AskAOA webinar, hosted by the AOA Third Party Center, offered helpful advice for how doctors can address and respond to clawbacks.

Webinar takes on sensitive topic of human trafficking

Most states require health care providers, including doctors of optometry, to report cases of abuse of children and elderly adults. AOA members are invited to attend an important webinar on the serious subject of human trafficking.