Bonnie An Henderson

University of Massachusetts Boston, Boston, Massachusetts, United States

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Publications (34)96.43 Total impact

  • [Show abstract] [Hide abstract]
    ABSTRACT: Endophthalmitis is a rare but potentially devastating complication of cataract surgery. This article presents an overview of endophthalmitis prophylaxis and the use of intracameral antibiotics. It highlights available intracameral antibiotics with respect to pharmacology, spectrum of activity, dosage and preparation, safety, and efficacy profiles, as well as toxic anterior segment syndrome risks to better define the potential use of these medications in the prevention of endophthalmitis. Proprietary or commercial disclosures are listed after the references. Copyright © 2014 ASCRS and ESCRS. Published by Elsevier Inc. All rights reserved.
    Journal of Cataract and Refractive Surgery 11/2014; · 2.75 Impact Factor
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    ABSTRACT: This article presents an extensive overview of best clinical practice pertaining to selection and use of multifocal intraocular lenses (IOLs) currently available in the United States. Relevant preoperative diagnostic evaluations, patient selection criteria, counseling, and managing expectations are reviewed, as well as how to approach patients with underlying ocular intricacies or challenges and best practices for intraoperative challenges during planned implantation of a multifocal IOL. Managing the unhappy multifocal IOL patient if implantation has been performed is also addressed. Financial Disclosure No author has a financial or proprietary interest in any material or method mentioned.
    Journal of Cataract and Refractive Surgery 02/2014; 40(2):313–322. · 2.75 Impact Factor
  • Bonnie An Henderson
    Journal of Cataract and Refractive Surgery 01/2014; 40(1):162-3. · 2.75 Impact Factor
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    ABSTRACT: This study utilized a phone survey to characterize patient perceptions of cataract surgery and the manner in which the ophthalmologist contributes to the patient's understanding in electing cataract surgery.
    Clinical ophthalmology (Auckland, N.Z.) 01/2014; 8:1595-602.
  • Ophthalmology 10/2012; 119(10):2191. · 5.56 Impact Factor
  • Bonnie An Henderson, Julia Schneider
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    ABSTRACT: Benefits of sequential surgery include assessment of the outcome of the first surgery to tailor the surgical technique, intraocular lens (IOL) power, and choice of IOL for the second surgery. Additionally, recovery may be prolonged from corneal edema, anterior chamber inflammation, or cystoid macular edema. Allowing the patient to maintain visual function in one eye during the recovery of the other eye can be important. Therefore, the few benefits of simultaneous surgery are greatly outweighed by risks of bilateral complications, inability to foresee refractive outcome, inability to alter IOL choice, potential loss of physician reimbursement, and possible increased legal ramifications.
    Survey of Ophthalmology 09/2012; 57(6):580-3. · 3.51 Impact Factor
  • Eye (London, England) 04/2012; 26(7):1026-7. · 1.97 Impact Factor
  • Julia Schneider, Bonnie An Henderson
    International ophthalmology clinics 01/2012; 52(2):1-10.
  • Eye (London, England) 11/2011; · 1.97 Impact Factor
  • Bonnie An Henderson, Richard Potvin
    Ophthalmology 09/2011; 118(9):1895-6; author reply 1896-7. · 5.56 Impact Factor
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    ABSTRACT: The aim of this study was to investigate the incidence of intraocular pressure (IOP) elevation after resident-performed cataract surgery and to determine variables, which influence postoperative day 1 (POD1) IOP. In all, 1111 consecutive cataract surgeries performed only by training residents between 1 July 2001 and 30 June 2006 were included. Elevated IOP was defined as ≥23 mm Hg. Surgeries were classified according to the presence of POD1-IOP elevation. Fisher's exact test and Student t-test were used to compare both groups. Multivariate analyses using generalized estimating equations were performed to investigate predictor variables associated with POD1-IOP elevation. The average preoperative IOP was 16.0±3.2 mm Hg and the average POD1-IOP was 19.3±7.1 mm Hg, reflecting a significant increase in IOP (P<0.001, paired t-test). The incidence of POD1-IOP elevation ≥23 mm Hg was 22.0% (244/1111). Presence of glaucoma and ocular hypertension, higher preoperative IOP, and longer axial length were frequently encountered variables in the POD1-IOP elevation group (all P<0.05). Using a multivariate analysis, presence of glaucoma (P=0.004, OR=2.38; 95% confidence interval (95% CI)=1.31-4.30), presence of ocular hypertension (P=0.003, OR=6.09; 95% CI=1.81-20.47), higher preoperative IOP (P<0.001, OR=3.73; 95% CI=1.92-7.25), and longer axial length (P=0.01, OR=1.15; 95% CI=1.03-1.29) were significant predictive factors for POD1-IOP elevation. IOP elevation on the first postoperative day following resident-performed cataract surgery occurred frequently (22.0%). Increased early postoperative IOP was associated with presence of glaucoma and ocular hypertension, higher preoperative IOP, and longer axial length.
    Eye (London, England) 04/2011; 25(7):929-36. · 1.97 Impact Factor
  • Christine S Ament, Bonnie A Henderson
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    ABSTRACT: Evaluate recent literature focusing on improving or assessing resident education in cataract surgery. Recently published studies outline methods of evaluating residents' performance, educational progress, and evaluating a surgical curriculum. Authors found that the rate of complications in resident-performed cataract surgery falls by 50% after the first 40 cases and stays the same for the next 20 cases. Preoperative risk factors for complications include mature cataract and abnormal zonular function. Left-handed residents had fewer complications compared with right-handed residents. Authors evaluated adherence by residents to the American Academy of Ophthalmology's Preferred Practice Patterns, and found that residents were lacking in eliciting patient's symptoms or function. A guide to establishing and maintaining a wet laboratory was published. Several studies evaluating the use of a physical-surgical simulator reported improvement in performance. The simulator was accepted and appreciated by residents. A cognitive simulation program was also found to be beneficial in improving fund of knowledge regarding cataract surgery. Teaching cataract surgery remains a difficult task. Educators continue to focus on curriculum, assessment, and complications. Resources for education are improving with establishment of wet laboratories and development of surgical simulators.
    Current opinion in ophthalmology 11/2010; 22(1):64-7. · 2.64 Impact Factor
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    Bonnie An Henderson, Kelly Jun Grimes
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    ABSTRACT: Intraocular lenses (IOLs) that block both ultraviolet and blue wavelength light (<500 nm)were introduced in the 1990s. Since then, the potential benefits and harm from blocking blue light has been debated. We report the results of a complete review of all peer-reviewed published studies regarding the impact of blocking the transmission of blue light. Fifty-six published reports on subjects related to blue-blocking lenses including sleep disturbance, visual outcomes, cataract surgery, lens transmittance, sunlight exposure, and macular disease were found in peer reviewed journals from 1962 to 2009. Eleven reports specifically compared visual outcomes between blue-blocking IOLs and nonblue-locking IOLs. Of these, 10 independent studies (10/11, 91%) concluded that there are no significant effects of blue-blocking IOLs on various meters of visual performance including visual acuity, contrast sensitivity, color perception, and photopic, mesopic, and scotopic sensitivities. Only one group of authors reported that the use of blue-blocking IOLs may have detrimental effects on scotopic vision and circadian rhythms. However, the actual clinical significance of these potential negative effects on scotopic vision and on sleep patterns is uncertain. The benefits of blocking the transmission of blue light to the macula and the relationship between progression of age-related macular degeneration remain unclear. However, the published studies clearly state that the use of blue-blocking IOLs is not detrimental in visual acuity, color perception, and contrast sensitivity. The reported potential negative effects on scotopic vision and sleep disturbance appear to be minimal and may not be clinically relevant. (Surv Ophthalmol 55:284--289, 2010. 2010 Elsevier Inc. All rights reserved.)
    Survey of Ophthalmology 05/2010; 55(3):284-9. · 3.51 Impact Factor
  • Jae Yong Kim, Bonnie An Henderson
    Journal of Cataract and Refractive Surgery 01/2010; 36(1):186. · 2.75 Impact Factor
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    ABSTRACT: Evaluate the effectiveness of an interactive cognitive computer simulation for teaching the hydrodissection portion of cataract surgery compared with standard teaching and to assess the attitudes of residents about the teaching tools and their perceived confidence in the knowledge gained after using the tools. Case-control study. Residents at academic institutions. Prospective, multicenter, single-masked, controlled trial was performed in 7 academic departments of ophthalmology (Harvard Medical School/Massachusetts Eye and Ear Infirmary, University of Iowa, Emory University, University of Cincinnati, University of Pennsylvania/Scheie Eye Institute, Jefferson Medical College of Thomas Jefferson University/Wills Eye Institute, and the Aravind Eye Institute). All residents from these centers were asked to participate and were randomized into 2 groups. Group A (n = 30) served as the control and received traditional teaching materials; group B (n = 38) received a digital video disc of the Virtual Mentor program. This program is an interactive cognitive simulation, specifically designed to separate cognitive aspects (such as decision making and error recognition) from the motor aspects. Both groups took online anonymous pretests (n = 68) and posttests (n = 58), and answered satisfaction questionnaires (n = 53). Wilcoxon tests were completed to compare pretest and posttest scores between groups. Analysis of variance was performed to assess differences in mean scores between groups. Scores on pretests, posttests, and satisfaction questionnaires. There was no difference in the pretest scores between the 2 groups (P = 0.62). However, group B (Virtual Mentor [VM]) scored significantly higher on the posttest (P = 0.01). Mean difference between pretest and posttest scores were significantly better in the VM group than in the traditional learning group (P = 0.04). Questionnaire revealed that the VM program was "more fun" to use (24.1% vs 4.2%) and residents were more likely to use this type of program again compared with the likelihood of using the traditional tools (58.6% vs 4.2%). The VM, a cognitive computer simulation, augmented teaching of the hydrodissection step of phacoemulsification surgery compared with traditional teaching alone. The program was more enjoyable and more likely to be used repetitively by ophthalmology residents.
    Ophthalmology 12/2009; 117(2):253-8. · 5.56 Impact Factor
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    ABSTRACT: Wet laboratories (wet labs) play an increasingly important role in ophthalmology surgical residency training. We summarize the necessary components in establishing and maintaining a well-functioning wet lab and offer a stepwise guide for educators to improve the quality of the wet lab experience. We present 6 key factors in creating an ophthalmology wet lab; that is, setting up the physical space, establishing appropriate faculty and curriculum, obtaining the practice eye, stabilizing the eye, preparing the eye, and funding the wet lab.
    Journal of Cataract and Refractive Surgery 07/2009; 35(6):1121-8. · 2.75 Impact Factor
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    ABSTRACT: To compare the incidence of intraoperative complications during cataract surgery performed by left-handed and right-handed residents and to find predictor variables for complications in resident-performed surgery. Massachusetts Eye and Ear Infirmary, Boston, Massachusetts, USA. This retrospective chart review comprised cataract extractions performed by postgraduate fourth-year residents from July 1, 2001, to June 30, 2006. The incidence of posterior capsule tear and vitreous loss were the main outcomes. Univariate and multivariate logistic analyses incorporated the variables of patient age and sex; laterality of surgical eye; presence of diabetes mellitus, glaucoma, or age-related macular degeneration; history of vitrectomy; axial length; pseudoexfoliation; small pupils; white cataract; posterior polar cataract; handedness of resident; and academic quarter during which surgery occurred. Left-handed residents performed 170 (9.8%) of the 1730 surgeries. The incidence of posterior capsule tear and vitreous loss was significantly lower in surgeries performed by left-handed residents than in those performed by right-handed residents (P = .03 and P<.001, respectively). Multivariate logistic analysis showed that resident right-handedness and older patient age were predictive of an increased incidence of posterior capsule tear and vitreous loss. A small pupil was predictive of an increased incidence of vitreous loss. The incidence of posterior capsule tear and vitreous loss was significantly lower in cataract surgeries performed by left-handed residents. Handedness and patient age were significant predictor variables for these complications.
    Journal of Cataract and Refractive Surgery 06/2009; 35(6):1019-25. · 2.75 Impact Factor
  • Bonnie An Henderson
    Journal of Cataract and Refractive Surgery 03/2009; 35(2):218-9. · 2.55 Impact Factor
  • Source
    Bonnie An Henderson
    Ophthalmology 11/2008; 115(10):1850-1. · 5.56 Impact Factor
  • Bonnie An Henderson
    Journal of Cataract and Refractive Surgery 05/2008; 34(5):718. · 2.55 Impact Factor

Publication Stats

185 Citations
96.43 Total Impact Points


  • 2006–2014
    • University of Massachusetts Boston
      Boston, Massachusetts, United States
  • 2005–2012
    • Harvard Medical School
      Boston, Massachusetts, United States
  • 2010
    • Boston University
      Boston, Massachusetts, United States
  • 2009
    • Ulsan University Hospital
      Urusan, Ulsan, South Korea
  • 2005–2007
    • Massachusetts Eye and Ear Infirmary
      • Department of Ophthalmology
      Boston, MA, United States