Skip to main content
  • Journal Highlights

    Excessive Smartphone Use and Myopia in Teens, Botox for Blepharospasm, and More


    Excessive Smartphone Use and Myopia in Teens

    Shingrix Protects Against Herpes Zoster Ophthalmicus

    MicroShunt or Trabeculectomy for POAG

    Ophthalmology Glaucoma

    At-Home Tonometry Identifies At-Risk Patients

    Ophthalmology Retina

    Use of iOCT to Guide ERM Peeling

    American Journal of Ophthalmology

    Botox for Blepharospasm: Role of Injection Site

    Features of ONH Prelaminar Schisis in Advanced Glaucoma

    JAMA Ophthalmology

    Health Care Disparities and Telemedicine During COVID

    Price Transparency Still Lacking at Academic Institutions

    Using Social Media to Educate Parents About Myopia Risks

    Other Journals

    Thyroid Eye Disease and Gaze-Evoked ONH Deformations

    OCT Distinguishes Meningioma From Glaucoma

    Ischemic Optic Neuropathy Following Cataract Surgery

    NOTE: This article has been updated since print publication. In the original article, EyeNet removed part of the quote from Heather Moss, MD, PhD, for reasons of space. Regrettably, important content was lost in the abridgment. The article below reinstates the full quote.

    Analyzing de-identi­fied electronic health record (EHR) data from the IRIS Regis­try, Verana Health de­termined the number of patients seen for a diagnosis of ischemic optic neuropathy within 90 days after cataract surgery from 2016 through 2020.

    The study found 6,152,870 cataract surgeries among 3,745,487 unique patients with at least 90 days of follow-up. The number of cataract surgeries performed stayed relatively stable across 2016-2019 and declined in 2020, in keeping with a previous study on ophthalmology-related patient visits during the COVID-19 pandemic.1 Ischemic optic neuropathy was reported within 90 days post-op in 5,915 patient eyes during the study period; the percentage of cases reporting ischemic optic neuropathy within 90 days postoperatively stayed consistent across these five years.

    “There are conflicting data on whether cataract surgery is a risk factor for ischemic optic neuropathy based on previous single-center studies with small case numbers,2 said Heather Moss, MD, PhD, at Stanford University in Palo Alto, California. “This finding demonstrates the potential for much larger sample sizes using real world data from a large, well-curated clinical database with 3,500 participating practices. Through careful study design including rigorous case selection and comparison with appropriate controls, this may help shed light on unresolved questions, in this case whether ischemic optic neuropathy incidence is increased after cataract surgery.”


    1 Leng T et al. Ophthalmology. Published online June 16, 2021.

    2 McCulley TJ et al. J Neuro-Ophthalmol. 2021;41(1):119-125.


    Note: The Academy has partnered with Verana Health ( to curate and analyze IRIS Registry data.

    Ischemic Optic Neuropathy Following Cataract Surgery