title: Effectiveness of prisms in the management of diplopia in patients due to diverse etiologies.
abstract: OBJECTIVE
  To study the effectiveness of prisms in the management of diplopia from different etiologies and over a broad range of ocular misalignment.
  
  
  METHODS
  In this retrospective cohort study, resolution of diplopia in 94 patients who were prescribed prisms was studied.
  
  
  RESULTS
  Among 94 patients, 88% reported complete or partial resolution of double vision (95% confidence interval: 84.1% to 95.6%) with highest improvement noted in the divergence insufficiency and skew deviation group (100%) compared to 64% improvement noted in patients with convergence insufficiency. More than 85% of patients who were prescribed greater than 10 diopters of prism and those with oblique prism prescriptions also reported resolution of diplopia. Eighty-nine percent of the cohort continued with prism use and 11% opted for strabismus surgery.
  
  
  CONCLUSIONS
  In this study, prisms were effective in alleviation of diplopia over a broad range and for different etiologies of double vision.
authors.affiliation: Eye Institute, Division of Neuro-ophthalmology, 51 North 39th Street, Philadelphia, PA 19104, USA. madhura.tamhankar@uphs.upenn.edu
authors.forename: Madhura A
authors.initials: MA
authors.lastname: Tamhankar
authors.forename: Gui-shuang
authors.initials: GS
authors.lastname: Ying
authors.forename: Nicholas J
authors.initials: NJ
authors.lastname: Volpe
mesh_terms: D000368:Aged; D004172:Diplopia / Q000209:etiology / Q000503:physiopathology / Q000628:therapy*; D005133:Eye Movements / Q000502:physiology; D005139:Eyeglasses; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D013508:Ophthalmologic Surgical Procedures; D012189:Retrospective Studies; D016896:Treatment Outcome