Seeing the Edges of the Lens After Cataract Surgery

Quick answer: Seeing the edges of the lens, glare, arcs, or shadows after cataract surgery is called dysphotopsia. It's caused by light reflecting off the new lens, it's usually more of an annoyance than a problem, and it most often fades on its own within days to months.

What is dysphotopsia?

During cataract surgery the cloudy natural lens is removed and replaced with an artificial intraocular lens (IOL). The IOL is flatter, thinner, and positioned slightly differently, especially at its edges, which can create optical effects:

1. Positive dysphotopsia: flashes, glare, light bursts, arcs, or rings of light, sometimes experienced as seeing the edge of the lens.
2. Negative dysphotopsia: a dark shadow, ring, line, or arc rather than light.

Neither is usually a cause for concern, and most cases resolve on their own in the days, weeks, or months after surgery as the eye heals and the brain readjusts to the new flow of light.

How dysphotopsia is treated

Everyone has a follow-up 24 to 48 hours after surgery, where you can report any symptoms. Treatment is usually conservative and stepwise:

1. Watchful waiting: most dysphotopsia fades as the brain adapts. If it persists past an agreed time, the next step may be considered.
2. Procedure: rarely needed (about 0.07% of cases). Options include a brief YAG laser procedure in the office, or, more rarely, repositioning the lens. Success rates are high.

Concerned about your vision after cataract surgery?

West Boca Eye Center in Boca Raton specializes in cataract care, including any issues that arise afterward. Learn more about cataract surgery or schedule a visit with Dr. Brent Bellotte and our team.