COVID-19 pandemic from an ophthalmology point of view.

Coronavirus disease 2019 (COVID-19) is caused by a highly contagious RNA virus termed as severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Ophthalmologists are at high-risk due to their proximity and short working distance at the time of slit-lamp examination. Eye care professionals can be caught unaware because conjunctivitis may be one of the first signs of COVID-19 at presentation, even precluding the emergence of additional symptoms such as dry cough and anosmia. Breath and eye shields as well as N95 masks, should be worn while examining patients with fever, breathlessness, or any history of international travel or travel from any hotspot besides maintaining hand hygiene. All elective surgeries need to be deferred. Adults or children with sudden-onset painful or painless visual loss, or sudden-onset squint, or sudden-onset floaters or severe lid oedema need a referral for urgent care. Patients should be told to discontinue contact lens wear if they have any symptoms of COVID-19. Cornea retrieval should be avoided in confirmed cases and suspects, and long-term preservation medium for storage of corneas should be encouraged. Retinal screening is unnecessary for coronavirus patients taking chloroquine or hydroxychloroquine as the probability of toxic damage to the retina is less due to short-duration of drug therapy. Tele-ophthalmology and artificial intelligence should be preferred for increasing doctor-patient interaction.

IMPULSE Study: Impact of COVID-19 in the present of ophthalmology focusing on ocular surface and future trends.

INTRODUCTION AND OBJECTIVE: Digital evolution represents an opportunity for ophthalmology to adapt to new care models. This study aimed to find out how the pandemic has modified the clinical practice and training activities of the ophthalmologist specialised in ocular surface, as well as to analyse emerging trends and needs. MATERIALS AND METHODS: This study was carried out through an online survey. A committee of 3 specialists developed a questionnaire of 25 questions structured in: 1) Participant profile; 2) Impact of the pandemic on patient management and professional activities; 3) Trends and needs. RESULTS: 68 clinical ophthalmologists participated. There was a high degree of agreement (90%) that the pandemic has delayed ophthalmological follow-up visits and diagnosis. The participants agreed that the frequency of patients with dry eye disease (75%), stye/chalazion (62%) and blepharitis (60%) has increased. According to 28%, remote monitoring of pathologies such as dry eye, glaucoma, diabetes, conjunctivitis, hyposphagmas, styes, etc., will be common, especially in the young population. This will be especially relevant in chronic or mild pathologies of the ocular surface, and in the follow-up of patients after cataract and diabetic retinopathy interventions. CONCLUSIONS: During the pandemic, an increase in the incidence of certain ocular surface diseases has been perceived. The telematic follow-up of chronic or mild pathologies of the ocular surface entails the need to provide specific training for both the patient and the healthcare professional, in addition to screening and referral protocols that would optimise the flow of care.

Tele-ophthalmology for age-related macular degeneration during the COVID-19 pandemic and beyond.

INTRODUCTION: COVID-19 has disrupted how ophthalmic practice is conducted worldwide. One patient population that may suffer from poor outcomes during the pandemic are those with age-related macular degeneration (AMD). Many practices are performing some form of tele-ophthalmology services for their patients, and guidance is needed on how to maintain continuity of care amongst patients with AMD using tele-ophthalmology. METHODS: A literature search was conducted, ending 1 August 2020, to identify AMD outcomes and telecare management strategies that could be used during the COVID-19 pandemic. RESULTS: 237 total articles were retrieved, 56 of which were included for analysis. Four American Academy of Ophthalmology and Center for Disease Control web resources were also included. DISCUSSION: Risk-stratification models have been developed that let providers readily screen existing patients for their future risk of neovascular AMD (nAMD). When used with at-home monitoring devices to detect nAMD, providers may be able to determine who should be contacted via tele-ophthalmology for screening. Telemedicine triage can be used for new complaints of vision loss to determine who should be referred to a retinal specialist for management of suspected nAMD. To increase access and provider flexibility, smartphone fundus photography images sent to a centralized tele-ophthalmology service can aid in the detection of nAMD. Considerations should also be made for COVID-19 transmission, and tele-ophthalmology can be used to screen patients for the presence of COVID-19 prior to in-person office visits. Tele-ophthalmology has additional utility in connecting with nursing home, rural, and socioeconomically disadvantaged patients in the post-pandemic period.

Validation of Home Visual Acuity Tests for Telehealth in the COVID-19 Era.

Importance: Visual acuity (VA) is one of the most important clinical data points in ophthalmology. However, few options for validated at-home VA assessments are currently available. Objective: To validate 3 at-home visual acuity tests in comparison with in-office visual acuity. Design, Setting, and Participants: Between July 2020 and April 2021, eligible participants with VA of 20/200 or better were recruited from 4 university-based ophthalmology clinics (comprehensive, cornea, glaucoma, and retina clinics). Participants were prospectively randomized to self-administer 2 of 3 at-home VA tests (printed chart, mobile phone app, and website) within 3 days before their standard-of-care clinic visit. Participants completed a survey assessing usability of the at-home tests. At the clinic visit, best-corrected Snellen distance acuity was measured as the reference standard. Main Outcomes and Measures: The at-home VA test results were compared with the in-office VA test results using paired and unpaired t tests, Pearson correlation coefficients, analysis of variance, χ2 tests, and Cohen κ agreement. The sensitivity, specificity, positive predictive value, and negative predictive value of each at-home test were calculated to detect significant VA changes (≥0.2 logMAR) from the in-office baseline. Results: A total of 121 participants with a mean (SD) age of 63.8 (13.0) years completed the study. The mean in-office VA was 0.11 logMAR (Snellen equivalent 20/25) with similar numbers of participants from the 4 clinics. Mean difference (logMAR) between the at-home test and in-office acuity was -0.07 (95% CI, -0.10 to -0.04) for the printed chart, -0.12 (95% CI, -0.15 to -0.09) for the mobile phone app, and -0.13 (95% CI, -0.16 to -0.10) for the website test. The Pearson correlation coefficient for the printed chart was 0.72 (95% CI, 0.62-0.79), mobile phone app was 0.58 (95% CI, 0.46-0.69), and website test was 0.64 (95% CI, 0.53-0.73). Conclusions and Relevance: The 3 at-home VA test results (printed chart, mobile phone app, and website) appeared comparable within 1 line to in-office VA measurements. Older participants were more likely to have limited access to digital tools. Further development and validation of at-home VA testing modalities is needed with the expansion of teleophthalmology care.

Real-World Application of Home Visual Acuity Testing for Pediatric Teleophthalmology During the COVID-19 Pandemic.

PURPOSE: To review the ability of home visual acuity testing during teleophthalmology consultations to accurately assess visual acuity in pediatric patients in a real-world setting. METHODS: This was a retrospective study of pediatric patients who were examined via teleophthalmology consultation due to the coronavirus disease 2019 (COVID-19) pandemic-related community restrictions between May and June 2020 at a single private ophthalmology practice. Home visual acuity findings were compared with the subsequent in-person assessment to determine agreement between measures. RESULTS: Forty-three patients (86 eyes) were included in the study. The mean patient age at the time of teleophthalmology assessment was 75.9 months (range: 29 to 173 months). The correlation between home visual acuity findings and subsequent in-person assessment across all participants was 0.56 (P < .001). The upper and lower limits of agreement were 0.38 logarithm of the minimum angle of resolution (logMAR) units and -0.33 logMAR. The correlation reduced to 0.46 (P = .013) in patients younger than 5 years and increased to 0.70 (P < .001) in patients 8 years and older. CONCLUSIONS: Home visual acuity assessment for teleophthalmology is of increased clinical value in older pediatric patients. In-person assessment by a trained clinician is the optimal method to determine visual acuity. Because home visual acuity assessment may be necessitated by local and global factors, further research is required regarding the optimal methods for assessment, particularly in younger patients. [J Pediatr Ophthalmol Strabismus. 2022;59(5):296-302.].

Teleophthalmology-enabled and artificial intelligence-ready referral pathway for community optometry referrals of retinal disease (HERMES): a Cluster Randomised Superiority Trial with a linked Diagnostic Accuracy Study-HERMES study report 1-study protocol.

INTRODUCTION: Recent years have witnessed an upsurge of demand in eye care services in the UK. With a large proportion of patients referred to Hospital Eye Services (HES) for diagnostics and disease management, the referral process results in unnecessary referrals from erroneous diagnoses and delays in access to appropriate treatment. A potential solution is a teleophthalmology digital referral pathway linking community optometry and HES. METHODS AND ANALYSIS: The HERMES study (Teleophthalmology-enabled and artificial intelligence-ready referral pathway for community optometry referrals of retinal disease: a cluster randomised superiority trial with a linked diagnostic accuracy study) is a cluster randomised clinical trial for evaluating the effectiveness of a teleophthalmology referral pathway between community optometry and HES for retinal diseases. Nested within HERMES is a diagnostic accuracy study, which assesses the accuracy of an artificial intelligence (AI) decision support system (DSS) for automated diagnosis and referral recommendation. A postimplementation, observational substudy, a within-trial economic evaluation and discrete choice experiment will assess the feasibility of implementation of both digital technologies within a real-life setting. Patients with a suspicion of retinal disease, undergoing eye examination and optical coherence tomography (OCT) scans, will be recruited across 24 optometry practices in the UK. Optometry practices will be randomised to standard care or teleophthalmology. The primary outcome is the proportion of false-positive referrals (unnecessary HES visits) in the current referral pathway compared with the teleophthalmology referral pathway. OCT scans will be interpreted by the AI DSS, which provides a diagnosis and referral decision and the primary outcome for the AI diagnostic study is diagnostic accuracy of the referral decision made by the Moorfields-DeepMind AI system. Secondary outcomes relate to inappropriate referral rate, cost-effectiveness analyses and human-computer interaction (HCI) analyses. ETHICS AND DISSEMINATION: Ethical approval was obtained from the London-Bromley Research Ethics Committee (REC 20/LO/1299). Findings will be reported through academic journals in ophthalmology, health services research and HCI. TRIAL REGISTRATION NUMBER: ISRCTN18106677 (protocol V.1.1).

Association of Patient Characteristics With Delivery of Ophthalmic Telemedicine During the COVID-19 Pandemic.

Importance: Telemedicine has been shown to have had reduced uptake among historically marginalized populations within multiple medical specialties during the COVID-19 pandemic. An evaluation of health disparities among patients receiving ophthalmic telemedical care during the pandemic is needed. Objective: To evaluate disparities in the delivery of ophthalmic telemedicine at Massachusetts Eye and Ear (MEE) during the COVID-19 pandemic. Design, Setting, and Participants: This retrospective, cross-sectional study analyzed clinical visits at a single tertiary eye care center (MEE) from January 1 to December 31, 2020. Patients who had ophthalmology and optometry clinical visits at the MEE during the study period were included. Exposures: Telemedicine vs in-person clinical encounters. Main Outcomes and Measures: Variables associated with use of ophthalmic telemedicine during the study period. Results: A total of 2262 telemedicine ophthalmic encounters for 1911 patients were included in the analysis. The median age of the patients was 61 (interquartile range, 43-72) years, and 1179 (61.70%) were women. With regard to race and ethnicity, 87 patients (4.55%) identified as Asian; 128 (6.70%), as Black or African American; 23 (1.20%), as Hispanic or Latino; and 1455 (76.14%), as White. On multivariate analysis, factors associated with decreased receipt of telemedical care included male sex (odds ratio [OR], 0.86; 95% CI, 0.77-0.96), Black race (OR, 0.69; 95% CI, 0.56-0.86), not speaking English (OR, 0.63; 95% CI, 0.48-0.81), educational level of high school or less (OR, 0.83; 95% CI, 0.71-0.97), and age (OR per year of age, 0.99; 95% CI, 0.989-0.998). When comparing telephone- and video-based telemedicine visits, decreased participation in video-based visits was associated with age (OR per year of age, 0.96; 95% CI, 0.94-0.98), educational level of high school or less (OR, 0.54; 95% CI, 0.29-0.99), being unemployed (OR, 0.28; 95% CI, 0.12-0.68), being retired (OR, 0.22; 95% CI, 0.10-0.42), or having a disability (OR, 0.09; 95% CI, 0.04-0.23). Conclusions and Relevance: The findings of this cross-sectional study, though limited to retrospective data from a single university-based practice, suggest that historically marginalized populations were less likely to receive ophthalmic telemedical care compared with in-person care during the first year of the COVID-19 pandemic in the US. Understanding the causes of these disparities might help those who need access to virtual care.

[Attitude of patients to possible telemedicine in ophthalmology : Survey by questionnaire in patients with glaucoma]. / Einstellung von Patienten zu möglicher Telemedizin in der Ophthalmologie : Erhebung mittels Fragebogen bei Glaukompatienten.

BACKGROUND: The COVID-19 pandemic in 2020 and 2021 severely restricted the care of ophthalmology patients. Teleophthalmological services, such as video consultation or medical telephone advice could, at least partially, compensate for the lack of necessary controls in the case of chronic diseases; however, teleophthalmological options are currently still significantly underrepresented in Germany. OBJECTIVE: In order to determine the willingness of patients to use telemedicine and the virtual clinic, we conducted a survey using a questionnaire on the subject of teleophthalmology in university medicine patients with known glaucoma as a chronic disease during the first wave of the COVID-19 pandemic. METHODS: A total of100 patients were interviewed. The questionnaire contained 22 questions with multiple choice possible answers. The inclusion criterion was the presence of glaucoma as a chronic disease, age over 18 years, and sufficient linguistic understanding to answer the questions. The data were collected, analyzed and anonymously evaluated. RESULTS: In the patient survey it could be shown that the respondents with glaucoma are very willing to do teleophthalmology and that this would be utilized. Of the patients surveyed 74.0% would accept telemedicine and virtual clinics. Of the ophthalmological patients surveyed 54.0% stated that their visit to the doctor/clinic could not take place due to SARS-CoV­2 and 17.0% of the patients stated that the SARS-CoV­2 pandemic had changed their opinion of telemedicine. DISCUSSION: The acceptance of telemedicine in patients with chronic open-angle glaucoma seems surprisingly high. This has been increased even further by the SARS-CoV­2 pandemic. These results reflect a general willingness of patients with chronic eye disease but do not reflect the applicability and acceptance and applicability from a medical point of view; however, this form of virtual consultation is accepted by the majority of patients with glaucoma and could be considered for certain clinical pictures.

Enabling teleophthalmology during the COVID-19 pandemic in the Province of Trento, Italy: Design and implementation of a mHealth solution.

BACKGROUND: Due to the many restrictions imposed during the COVID-19 emergency, the normal clinical activities have been stopped abruptly in view of limiting the circulation of the virus. The extraordinary containment measures have had a dramatic impact on the undertaking and follow-up of ophthalmic outpatients. OBJECTIVE: In order to guarantee proper monitoring and routine care, the Pediatric Ophthalmology equipe of Rovereto Hospital (North-East of Italy) supported by the Competence Center on Digital Health TrentinoSalute4.0, designed and implemented a digital platform, TreC Oculistica, enabling teleophthalmology. We report our innovative-albeit restricted-experience aiming at testing and maximizing the efficacy of remote ophthalmic and orthoptic visits. METHODS: A multidisciplinary team created the TreC Oculistica platform and defined a teleophthalmology protocol. The system consists of a clinician web interface and a patient mobile application. Clinicians can prescribe outpatients with the App and some preliminary measurements to be self-collected before the televisit. The App conveys the clinician's requests (i.e. measurements) and eases the share of the collected information in a secure digital environment, promoting a new health care workflow. RESULTS: Four clinicians took part in the testing phase (2 ophthalmologists and 2 orthoptists) and recruited 37 patients (mostly pediatric) in 3 months. Thanks to a continuous feedback between the testing and the technical implementation, it has been possible to identify pros and cons of the implemented functionalities, considering possible improvements. Digital solutions such as TreC Oculistica advance the digitalization of the Italian health care system, promoting a structured and effective reorganization of the workload supported by digital systems. CONCLUSIONS: The study tested an innovative digital solution in the teleophthalmology context and represented the first experience within the Italian healthcare system. This solution opens up new possibilities and scenarios that can be effective not only during the pandemic, but also in the traditional management of public health services.

Telemedicine Evaluations in Neuro-Ophthalmology During the COVID-19 Pandemic: Patient and Physician Surveys.

BACKGROUND: The novel coronavirus 2019 (COVID-19) pandemic has transformed health care. With the need to limit COVID-19 exposures, telemedicine has become an increasingly important format for clinical care. Compared with other fields, neuro-ophthalmology faces unique challenges, given its dependence on physical examination signs that are difficult to elicit outside the office setting. As such, it is imperative to understand both patient and provider experiences to continue to adapt the technology and tailor its application. The purpose of this study is to analyze both neuro-ophthalmology physician and patient satisfaction with virtual health visits during the time of the COVID-19 pandemic. METHODS: Across three institutions (NYU Langone Health, Indiana University Health, and Columbia University Medical Center), telemedicine surveys were administered to 159 patients. Neuro-ophthalmologists completed 157 surveys; each of these were linked to a single patient visit. Patient surveys consisted of 5 questions regarding visit preparation, satisfaction, challenges, and comfort. The physician survey included 4 questions that focused on ability to gather specific clinical information by history and examination. RESULTS: Among 159 patients, 104 (65.4%) reported that they were satisfied with the visit, and 149 (93.7%) indicated that they were comfortable asking questions. Sixty-eight (73.9%) patients found the instructions provided before the visit easy to understand. Potential areas for improvement noted by patients included more detailed preparation instructions and better technology (phone positioning, Internet connection, and software). More than 87% (137/157) of neuro-ophthalmologists surveyed reported having performed an examination that provided enough information for medical decision-making. Some areas of the neuro-ophthalmologic examination were reported to be easy to conduct (range of eye movements, visual acuity, Amsler grids, Ishihara color plates, and pupillary examination). Other components were more difficult (saccades, red desaturation, visual fields, convergence, oscillations, ocular alignment, and smooth pursuit); some were especially challenging (vestibulo-ocular reflex [VOR], VOR suppression, and optokinetic nystagmus). Clinicians noted that virtual health visits were limited by patient preparation, inability to perform certain parts of the examination (funduscopy and pupils), and technological issues. CONCLUSIONS: Among virtual neuro-ophthalmology visits evaluated, most offer patients with appointments that satisfy their needs. Most physicians in this cohort obtained adequate clinical information for decision-making. Even better technology and instructions may help improve aspects of virtual health visits.

Live teleophthalmology avoids escalation of referrals to secondary care during COVID-19 lockdown.

CLINICAL RELEVANCE: Following the COVID-19 lockdown, uptake of slitlamp-enabled live teleophthalmology increased. Its use contributed to a reduction of referrals escalated to secondary care during-lockdown (avoided: 64% pre-lockdown vs 86% during-lockdown). BACKGROUND: Live teleophthalmology using video conferencing allows real-time, three-way consultation between secondary care, community providers and patients, improving interpretation of slit lamp findings and potentially reducing referrals to secondary care. NHS Forth Valley implemented live teleophthalmology in March 2019. In March 2020, the COVID-19 pandemic created urgency to deliver ophthalmic care while minimising the risk of contracting or spreading the disease. We aim to compare the uptake and two outcomes (number of avoided secondary care referrals; pattern of presenting conditions) of live teleophthalmology consultations in NHS Forth Valley before and during the COVID-19 national lockdown. METHODS: An NHS secure video conferencing platform connected the video slit lamps of optometrists, or an iPad mounted on a slit lamp and viewing through the eyepieces, to a secondary care ophthalmologist via a virtual live clinic/waiting area. Data about avoiding a secondary care referral were extracted from a post-consultation ophthalmologist survey for 14 months of data. Pre- and during-lockdown intervals were before/after 23 March 2020, when routine eyecare appointments were suspended. Numbers of avoided referrals to secondary care and patterns of presenting conditions were compared for pre- and during-lockdown periods. RESULTS: The COVID-19 pandemic markedly increased use of live teleophthalmology in NHS Forth Valley. Surveys were completed for 164 of 250 (66%) teleophthalmology consultations over the study period. Data from 154 surveys were analysed, 78 and 76 for the pre- and during-lockdown periods, respectively. Significantly more during-lockdown (86%) than pre-lockdown (64%; difference 21%, 95% CI 8-34%, p = 0.001) surveys indicated that referrals to secondary care were avoided. CONCLUSION: Survey data from ophthalmologists suggest significantly fewer escalations to secondary care due to teleophthalmology use.

Telehealth-based Eye Care During the COVID-19 Pandemic: Utilization, Safety, and the Patient Experience.

PURPOSE: To assess the initial utilization, safety, and patient experience with tele-ophthalmology during the COVID-19 pandemic. DESIGN: Cross-sectional study. METHODS: We conducted a telephone survey and interview of a random sample of patients who received different modalities of care (in-person, telephone, videocall, or visits deferred) during Michigan's shelter-in-place order beginning March 23, 2020. The survey assessed patient safety, patient satisfaction with care, perceptions of telehealth-based eye care, and worry about eyesight. Data were analyzed via frequency measures (eg, means and standard deviations), χ2 tests, ANOVA, and paired t tests. Interviews were analyzed using grounded theory. RESULTS: A total of 3,274 patients were called and 1,720 (53%) agreed to participate. In-person participants were significantly older than telephone (P = .002) and videocall visit (P = .001) participants. Significantly more white participants had in-person visits than minority participants (P = .002). In-person visit participants worried about their eyesight more (2.7, standard deviation [SD] = 1.2) than those who had telephone (2.5, SD = 1.3), videocall (2.4, SD = 1.1), or deferred visits (2.4, SD = 1.2) (P = .004). Of all telephone or videocall visits, 1.5% (n = 26) resulted in an in-person visit within 1 day, 2.9% (n = 48) within 2-7 days, and 2.4% (n = 40) within 8-14 days after the virtual visit demonstrating appropriate triage to telemedicine-based care. Patients frequently cited a desire for augmenting the telephone or videocall visits with objective test data. CONCLUSIONS: When appropriately triaged, tele-ophthalmology appears to be a safe way to reduce the volume of in-person visits to promote social distancing in the clinic. A hybrid model of eye care combining ancillary testing with a video or phone visit represents a promising model of care.

Ophthalmology practice in Afghanistan during the COVID-19 pandemic.

This short communication described the actions taken in ophthalmic practice in Kabul, Afghanistan during the COVID-19 pandemic to effectively protect both patients and staff. By following World Health Organisation (WHO), international and local guidelines it has been possible to continue treating ophthalmic outpatients with minimum risk to both patients and staff. The changes which have been implemented may allow better overall infection control in the hospital which will continue to have benefits post-pandemic.

A review on the use of telemedicine in glaucoma and possible roles in COVID-19 outbreak.

We review the use of telemedicine in glaucoma and its possible roles in the COVID-19 outbreak. We performed a literature search of published human studies on teleglaucoma on May 12, 2020, using search terms including "telemedicine" and "glaucoma" that were in English and published over the prior 10 years. This search strategy yielded a total of 14 relevant articles after manual curation. Of the 14 articles, 4 were from the same randomized control trial, 7 were prospective studies, 2 were retrospective studies, 1 was descriptive analysis, and 1 was cost-effective analysis. Seven discussed the common ophthalmologic measurements used in teleglaucoma. Four demonstrated the cost effectiveness of the use of teleglaucoma, and 3 articles investigated patient satisfaction with the use of teleglaucoma. Three articles investigated the correlation between teleglaucoma and face-to-face clinics. Five articles discussed the current use and opportunities of teleglaucoma. When compared to in-person care, teleglaucoma is more time and cost-effective, shows high patient satisfaction and fair to good agreement with in-person care; however, there is great variation in the reported sensitivity of glaucoma screening, warranting further studies to establish its efficacy. For glaucoma management, both the sensitivity and specificity must be further improved before it could be put into extensive use. Nevertheless, it is worthwhile to explore the possible extensive application of teleglaucoma in monitoring "glaucoma suspects" and maintaining glaucoma follow-up during a pandemic outbreak to reduce the risk of transmission of infection.

Uveitis Specialists Harnessing Disruptive Technology during the COVID-19 Pandemic and Beyond.

Spurred by the coronavirus disease pandemic and shortage of eye care providers, telemedicine is transforming the way ophthalmologists care for their patients. Video conferencing, ophthalmic imaging, hybrid visits, intraocular inflammation quantification, and portable technology are evolving areas that may allow more uveitis patients to be evaluated via telemedicine. Despite these promising disruptive technologies, there remain significant technological limitations, legal barriers, variable insurance coverage for virtual visits, and lack of clinical trials for uveitis specialists to embrace telemedicine.

Changes in patient visits and diagnoses in a large academic center during the COVID-19 pandemic.

BACKGROUND: To minimize the risk of viral transmission, ophthalmology practices limited face-to-face encounters to only patients with urgent and emergent ophthalmic conditions in the weeks after the start of the COVID-19 epidemic in the United States. The impact of this is unknown. METHODS: We did a retrospective analysis of the change in the frequency of ICD-10 code use and patient volumes in the 6 weeks before and after the changes in clinical practice associated with COVID-19. RESULTS: The total number of encounters decreased four-fold after the implementation of clinic changes associated with COVID-19. The low vision, pediatric ophthalmology, general ophthalmology, and cornea divisions had the largest total decrease of in-person visits. Conversely, the number of telemedicine visits increased sixty-fold. The number of diagnostic codes associated with ocular malignancies, most ocular inflammatory disorders, and retinal conditions requiring intravitreal injections increased. ICD-10 codes associated with ocular screening exams for systemic disorders decreased during the weeks post COVID-19. CONCLUSION: Ophthalmology practices need to be prepared to experience changes in practice patterns, implementation of telemedicine, and decreased patient volumes during a pandemic. Knowing the changes specific to each subspecialty clinic is vital to redistribute available resources correctly.