title: Dissatisfaction after bilateral multifocal intraocular lens implantation: an electrophysiology study.
abstract: OBJECTIVE
  To resolve patient dissatisfaction after bilateral diffractive multifocal intraocular lens (IOL) implantation, a multifocal IOL was exchanged for a monofocal IOL in the dominant eye. The relationship between dissatisfaction and pattern visual evoked cortical potential (P-VECP) was analyzed.
  
  
  METHODS
  A 49-year-old man and a 71-year-old woman were implanted with diffractive multifocal IOLs bilaterally. Despite good binocular visual acuity after bilateral multifocal IOL implantation, each patient experienced persistent dissatisfaction with quality and sharpness of vision even when using spectacles and contact lenses. A multifocal IOL was exchanged for a monofocal IOL in the dominant eye of each patient. Pattern visual evoked cortical potential was measured in each patient and the average of each component was calculated.
  
  
  RESULTS
  After IOL exchange in the dominant eye, P-VECP amplitude increased, peak latency improved, and the patients' symptoms disappeared.
  
  
  CONCLUSIONS
  Monofocal IOL exchange in the dominant eye is an effective approach for dissatisfaction after bilateral multifocal IOL implantation.
authors: Department of Ophthalmology, School of Medicine, Kitasato University, Sagamihara, Kanagawa, Japan. kimiyas@med.kitasato-u.ac.jp
authors: Kimiya
authors: K
authors: Shimizu
authors: Misae
authors: M
authors: Ito
mesh_terms: D000368:Aged; D020878:Device Removal; D005074:Evoked Potentials, Visual / Q000502:physiology*; D005260:Female; D007839:Functional Laterality; D006801:Humans; D019654:Lens Implantation, Intraocular / Q000009:adverse effects*; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D017060:Patient Satisfaction; D011474:Prosthesis Design; D012086:Reoperation; D014786:Vision Disorders / Q000209:etiology* / Q000601:surgery; D015348:Vision, Binocular / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology