Honors & Awards


  • Gina Finzi Fellow, Lupus Foundation of America (2017)
  • Goldwater Scholar, Barry M. Goldwater Foundation (2015-2016)
  • Rose Hills Scholar, Rose Hills Foundation (2014-2016)
  • Wasserman Scholar, Edith & Lew Wasserman Foundation (2016)

Education & Certifications


  • Bachelor of Science, University of California Los Angeles, Microbio., Immuno., & Mol. Gen (2017)

Clerkships


  • 2020 Winter - NENS 301A Neurology Core Clerkship
  • 2020 Winter - OBGYN 300A Obstetrics and Gynecology Core Clerkship
  • 2020 Winter - OPHT 398A Elective in Ophthalmology
  • 2019 Autumn - MED 300A Internal Medicine Core Clerkship
  • 2019 Autumn - PEDS 300A Pediatrics Core Clerkship
  • 2019 Summer - PSYC 300A Psychiatry Core Clerkship

All Publications


  • Anti-interleukin-6 receptor therapy with tocilizumab for refractory pseudophakic cystoid macular edema. American journal of ophthalmology case reports Pham, B. H., Hien, D. L., Matsumiya, W., Tuong Ngoc, T. T., Doan, H. L., Akhavanrezayat, A., Yasar, C., Nguyen, H. V., Halim, M. S., Nguyen, Q. D. 2020; 20: 100881

    Abstract

    Purpose: To describe the clinical course of a patient with refractory pseudophakic cystoid macular edema treated with interleukin-6 receptor antagonist tocilizumab.Observations: An 80-year-old Caucasian man with past ocular history significant for glaucoma (right eye) and iritis presented with cystoid macular edema (CME) in the right eye (OD). His ocular surgery history was significant for cataract extraction with posterior chamber intraocular lenses in 1999 and YAG laser capsulotomy in 2014 in both eyes (OU). His medications at time of presentation included latanoprost and dorzolamide-timolol in OD for glaucoma, as well as prednisolone in OD for iritis. Upon examination, his visual acuity was 20/250 in OD and 20/20 in the left eye (OS). Intraocular pressure was 20mmHg in OD and 10mmHg in OS. Slit-lamp examination revealed no cells or flare in OU. Dilated fundus exam showed CME and a cup-to-disk ratio of 0.9 in OD and normal findings in OS. Initial spectral domain optical coherence tomography (SD-OCT) demonstrated intraretinal fluid in both outer and inner layers as well as mild subretinal fluid with an intact ellipsoid zone in OD. Fluorescein angiography revealed perifoveal leakage in OD. Laboratory evaluations, including infectious work-up, were unremarkable. While the patient's CME initially improved after initiation of therapy with topical prednisolone and oral acetazolamide, the CME later recurred after systemic acetazolamide was stopped due to intolerable side effects. Despite multiple therapeutic approaches, including topical and systemic corticosteroids (both oral and intravenous) and topical interferon alpha2b over the course of more than one year, the patient's visual acuity continued to worsen with increasing intra- and subretinal fluid in the macula. Due to the refractory CME, the patient was started on monthly infusions of anti-interleukin (IL)-6 receptor tocilizumab (8 mg/kg) with three days of methylprednisolone infusions (500 mg/day). After nine cycles of treatment, SD-OCT demonstrated restoration of normal foveal contour with complete resolution of CME.Conclusions and Importance: IL-6 inhibition with tocilizumab may be a safe and effective treatment for refractory CME. Further studies are needed to elucidate the nature and extent of therapeutic IL-6 inhibition in CME.

    View details for DOI 10.1016/j.ajoc.2020.100881

    View details for PubMedID 32875161

  • Yet another case of ocular sarcoidosis. American journal of ophthalmology case reports Hien, D. L., Onghanseng, N., Ngoc, T. T., Hwang, J. J., Pham, B. H., Doan, H. L., Nguyen, H. V., Halim, M. S., Uludag, G., Sepah, Y. J., Do, D. V., Nguyen, Q. D. 2020; 19: 100825

    Abstract

    Purpose: To report a case of bilateral pan-uveitis resembling fungal and viral endophthalmitis in a patient who was ultimately diagnosed with sarcoidosis.Observation: A 64-year-old female presented with a four-day history of painless vision loss in the right eye. She presented with multiple concurrent systemic complaints, including a history of oral and genital sores, patches of hypopigmented skin on her forearms, and occasional shortness of breath. Upon further examination, she was noted to have bilateral pan-uveitis, which was more severe in the right than left eye. Posterior pole examination of the right eye revealed dense vitritis with multiple large whitish round balls that seemed suggestive of fungal or viral endophthalmitis. Initial therapies included intravitreal (IVT) foscarnet and intravenous (IV) acyclovir, followed by IV amphotericin B and oral voriconazole, which did not improve ocular signs and symptoms. Further evaluations ruled out infectious etiologies and lymphoma. Chest computerized tomography (CT) scan revealed findings suggestive of sarcoidosis, which was confirmed with lung biopsy. Anti-viral and -fungal treatments were discontinued, and the patient was started on IV methylprednisolone followed by oral prednisone and mycophenolate mofetil. Ocular symptoms improved, and the patient remained stable after treatment.Conclusion and Importance: The index report illustrates a case of ocular sarcoidosis that imitated the presentation of infectious endophthalmitis. Though ocular sarcoidosis is known to masquerade as a range of disorders and constitutes part of the differential diagnosis for infectious endophthalmitis, sarcoidosis has not been reported in recent literature to imitate the presentation of fungal endophthalmitis. The index case suggests that ocular sarcoidosis should be considered in the differential diagnoses of fungal endophthalmitis.

    View details for DOI 10.1016/j.ajoc.2020.100825

    View details for PubMedID 32715157

  • Effectiveness of OCT measurement techniques in detecting hydroxychloroquine retinopathy up to the time of conversion to toxicity De Sisternes, L., Pham, B., Durbin, M. K., Marmor, M. F. ASSOC RESEARCH VISION OPHTHALMOLOGY INC. 2020
  • TOPOGRAPHIC OPTICAL COHERENCE TOMOGRAPHY SEGMENTATION SHOWS LIMITED ELLIPSOID ZONE RECOVERY IN MILD HYDROXYCHLOROQUINE RETINOPATHY. Retinal cases & brief reports de Sisternes, L., Pham, B. H., Durbin, M., Marmor, M. F. 2020

    Abstract

    PURPOSE: Optical coherence tomography (OCT) cross-sections have shown limited ellipsoid zone (EZ) improvement in mild hydroxychloroquine (HCQ) retinopathy within a few years after drug cessation. However, the extent, functional significance, and stability of such changes over time remain unclear.METHODS: We created en face EZ maps using automated pixel-by-pixel segmentation for four patients with early-moderate HCQ toxicity followed for 6-8 years after drug cessation. These maps were compared with OCT cross-sections, fundus autofluorescence, and automated 10-2 visual fields.RESULTS: One patient had no EZ line loss; one had stable EZ loss throughout follow-up; two showed 30 to 40% reduction in the area of loss, largely in the first 2 years. This limited recovery mostly occurred in regions where the EZ line was only thinned or fragmented; other similar areas did not improve. Fundus autofluorescence hyperfluorescence and visual fields did not show consistent correlation with topography.CONCLUSION: Anatomic EZ recovery, when present, was restricted to regions of mild damage and did not correlate with fundus autofluorescence or improvement in visual fields. Topographic mapping seemed no more sensitive locally than cross-sectional OCT but may aid detection and longitudinal follow-up of toxicity by showing early damage or changes in the macula that could be missed with individual cross-sections.

    View details for DOI 10.1097/ICB.0000000000000993

    View details for PubMedID 32150114

  • Systemic immunosuppressive therapies for uveitis in developing countries Indian Journal of Opthalmology Agrawal, H., Hien, D. L., Pham, B. H., Khosla, A., Babu, M., McCluskey, P., Nguyen, Q. D., Sangwan, V., Reddy, S., Sawhney, S., Tyagi, M. 2020; 68 (9): 1852-1862
  • The rapid N-wave as a potentially useful measure of the photopic negative response. Documenta ophthalmologica. Advances in ophthalmology Pham, B. H., Goldberg, J. L., Marmor, M. F. 2020

    Abstract

    The photopic negative response (PhNR) correlates with ganglion cell function and has previously been examined as an indicator of glaucomatous optic nerve damage. However, it is a prolonged response that is measured against baseline, and its clinical utility has been limited by extensive variability, poor repeatability, and baseline instability. We have observed a distinct brief negative wave ("N-wave") commonly present within the slow PhNR trough, which may provide practical and analytic advantages as a clinical measure.We reviewed data from an interventional trial of 59 glaucoma patients who had 4 exams over an 8-month period. The PhNR was recorded with standard ISCEV stimuli (1 Hz and in some cases 4 Hz stimulation), and N-waves were measured manually, relative to return to baseline.N-waves, when present, could be measured easily despite shifting baselines and a degree of background noise. The PhNR median amplitude centered around 18 μV, while the N-wave median centered around 7 μV, with a distribution of responses skewed toward low or zero amplitudes.The N-wave appears to be a component of the longer PhNR, though its exact origin and significance remain unclear. As a rapid waveform that is independent of baseline, the N-wave is in many ways easier to measure accurately than the slower PhNR, which is highly dependent on baseline stability. The N-wave may prove useful clinically if further studies can optimize its stimulation, show its behavior in normal individuals and find correlation with markers of optic nerve disease.

    View details for DOI 10.1007/s10633-020-09769-w

    View details for PubMedID 32507902

  • Topography Shows Limited Ellipsoid Zone Recovery from Mild Hydroxychloroquine Toxicity Pham, B., De Sisternes, L., Durbin, M. K., Marmor, M. F. ASSOC RESEARCH VISION OPHTHALMOLOGY INC. 2019
  • PhNR measurement independent of baseline (N-wave) for the clinical evaluation of glaucoma Marmor, M. F., Pham, B., Goldberg, J. L. ASSOC RESEARCH VISION OPHTHALMOLOGY INC. 2019
  • SEQUENTIAL CHANGES IN HYDROXYCHLOROQUINE RETINOPATHY UP TO 20 YEARS AFTER STOPPING THE DRUG Implications for Mild Versus Severe Toxicity RETINA-THE JOURNAL OF RETINAL AND VITREOUS DISEASES Pham, B. H., Marmor, M. F. 2019; 39 (3): 492–501
  • Unilateral retinitis pigmentosa in children JOURNAL OF AAPOS Mercado, C. L., Pham, B. H., Beres, S., Marmor, M. F., Lambert, S. R. 2018; 22 (6): 457–61
  • Long-term progression of hydroxychloroquine retinopathy off the drug Pham, B., Marmor, M. F. ASSOC RESEARCH VISION OPHTHALMOLOGY INC. 2018
  • Responsiveness to X-Linked Toll-like Receptors Differs Between Mice with XY and XX Sex Chromosome Complement, Regardless of the Gonadal Sex Pham, B., Valera, I., Singh, R. R. WILEY. 2016
  • Investigating mechanisms of sex bias in lung fibrosis using mice with sex chromosome complement Valera, I. C., Kafaja, S., Pham, B., Fishbein, M., Singh, R. R. AMER ASSOC IMMUNOLOGISTS. 2016