KEY TAKEAWAY POINTS
- Pseudophakic dysphotopsia, positive, negative and multifocal/diffractive dysphotopsia, is the most common source of patient dissatisfaction after uneventful cataract surgery
- The etiology of positive dysphotopsia is most likely multifactorial including IOL charateristics such as edge design, refractive index and optic design
- Multifocal/diffractive dysphotopsia is uniquely related to an IOL optic design utilizing diffractive, refractive or combination technology to create distinct multiple focal points or extended depth of focus
- Patients may simultaneously experience different categories of dysphotopsia. Differentiating the cause of each type dysphotopsia is critical to help “20/unhappy” patients