Reaching the Unreachable: Novel Approaches to Telemedicine Screening of Underserved Populations for Vitreoretinal Disease

Manhattan Vision Screening and Follow-Up Study: (NYC-SIGHT)Tele-Retinal Image Findings and Importance of Photography

Purpose: To describe tele-retinal abnormality image findings from the Manhattan Vision Screening and Follow-up Study (NYC-SIGHT), which aims to investigate whether community-based eye health outreach strategies using telemedicine can improve visual outcomes among at-risk populations in Upper Manhattan. Methods: A 5-year prospective, cluster-randomized clinical trial was conducted. Eligible individuals aged 40 years and older were recruited from affordable housing developments and senior centers in New York City. Participants underwent on-site eye health screening (best-corrected visual acuity, intraocular pressure [IOP] measurements, and fundus photography). Fundus images were graded via telemedicine by a retina specialist. Multivariate logistic regression modeling was used to assess the factors associated with abnormal retinal findings requiring referral to ophthalmology. Results: Participants with a retinal abnormality on fundus photography (n = 157) were predominantly older adults, with a mean age of 68.4 ± 11.1 years, female (63.7%), African American (50.3%), and Hispanic (43.3%). A total of 32 participants in our study passed the vision and IOP screening but had an abnormal retinal image and ocular pathology that would have been missed without fundus photography. Individuals who self-identified as having preexisting glaucoma (odds ratio [OR] = 3.749, 95% confidence interval [CI] = 1.741-8.074, p = 0.0001) and had severe vision impairment (OR = 4.1034, 95% CI = 2.0740-8.1186, p = 0.000) at the screening had significantly higher odds of having an abnormal retinal image. Conclusion: This community-based study targeted populations at-risk for eye disease, improved access to eye care, detected a significant number of retinal image abnormalities requiring follow-up by using telemedicine, and provided evidence of the importance of fundus photography during eye health screenings. CTR number: NCT04271709.

Effective Low-Cost Ophthalmological Screening With a Novel iPhone Fundus Camera at Community Centers

Ophthalmologic care is inaccessible to many people due to a variety of factors, including the availability of providers, cost of equipment for ophthalmologic care, and transportation to clinics and appointments. Because many causes of blindness are both highly prevalent and preventable once identified, it is essential to address gaps in care for underserved populations. We developed a novel 3D-printed mobile retinal camera. In this study, we organized recurring student-run screening events around New York City that took place in community centers and churches, at which we utilized our device to take retinal images. Our screening events reached a diverse population of New Yorkers, disproportionately those with lower household income, many of whom had not had recent eye exams. To validate the device for use in telehealth ophthalmologic visits, we transmitted the images to a remote ophthalmologist for evaluation and compared the result with an on-site attending physician’s dilated eye exam. The subjective assessment indicated that 97% of images captured with the mobile retinal camera were acceptable for telehealth analysis. Remote image assessment by achieved 92% sensitivity and 83% specificity in detecting optic disc cupping, compared to the gold-standard on-site dilated eye exam. In addition, the device was portable, affordable, and able to be used by those with relatively little ophthalmologic training. We have demonstrated the utility of this affordable mobile retinal camera for telehealth ophthalmologic evaluation during community screening events that reached an underserved population to detect disease and connect with long-term care.

Clinic-Based Eye Disease Screening Using Non-Expert Fundus Photo Graders at the Point of Screening: Diagnostic Validity and Yield

PURPOSE

The intent of this study was to determine the diagnostic accuracy of several diagnostic tests for age-related macular degeneration (AMD), diabetic retinopathy (DR), glaucoma, and cataract, as well as the proportions of patients with eye disease from each of 3 enrolling clinics.

DESIGN

Diagnostic accuracy study.

METHODS

Patients ≥50 years old in a diabetes, thyroid, and general medicine clinic were screened using visual acuity, tonometry, and fundus photography. Photographs were graded at the point-of-screening by non-ophthalmic personnel. Participants with positive screening test results in either eye and a 10% random sample with negative results in both eyes were referred for an in-person, reference-standard ophthalmology examination.

RESULTS

Of 889 participants enrolled, 229 participants failed at least 1 test in either eye, of which 189 presented for an ophthalmic examination. An additional 76 participants with completely normal screening test results were referred for examination, of which 50 attended. Fundus photography screening had the highest yield for DR (sensitivity: 67%; 95% confidence interval [CI]: 39%-87%), visual acuity screening for cataract (sensitivity: 89%; 95% CI: 86%-92%), and intraocular pressure screening for glaucoma or suspected glaucoma (sensitivity: 25%; 95% CI: 14%-40%). The burden of disease was relatively high in all 3 clinics, with at least 1 of the diseases of interest (ie, AMD, DR, glaucoma or suspected glaucoma, or cataract) detected in 25% of participants (95% CI: 17-35%) from the diabeteses clinic, 34% (95% CI: 22%-49%) from the thyroid clinic, and 21% (95% CI: 13%-32%) from the general clinic.

CONCLUSIONS

Non-expert eye disease screening in health clinics may be a useful model for detection of eye disease in resource-limited settings.

[Feedback on ophthalmologic telemedicine in a nursing home]

INTRODUCTION

Ophthalmologic care needings increase whereas the numbers of ophthalmologist decrease. Oldest people who are often vulnerable and dependent populations are particularly affected in difficulty to access to health services. To resolve the problem, the use of telemedicine in ophthalmology could be an alternative.

MATERIALS AND METHODS

From June 2018 to November 2018, patients from Janzé Hospital (Ille et Vilaine) did an ophthalmologic teleconsultation during their stay. Teleconsultation was based on visual acuity, intraocular pressure measurement, wild-field retinophotography and optical coherence tomography performed by an orthoptist and a videoconference with an ophthalmologist.

RESULTS

Sixty-seven patients underwent teleconsultation (60 % women, 40 % men). Mean age was 83 (standard deviation±8). Fifty-four percent (36) of consultations were complete. Retinophotography was missing in 45 % of cases (30) and optical coherence tomography in 53 % of cases (35). Ophtalmologic pathologies were detected in 37 patients (55 %) and we start medical care in 14 (38 %) of the patients. We gave glasses prescription to 45 % (30) of the patients. Eighteen percent (10) of the patients required a physical consultation. LogMar distance visual acuity was significantly improved from 0.67 (±0.76) to 0.52 (±0.72) (P<0.0001) and LogMar near visual acuity was significantly improved from 0.68 (±0.84) to 0.53 (±0.76) (P<0.0001). Low vision proportion was significantly decreased from 54 % to 39 % (P=0.02; OR=1.86; IC95 % [1.06-3.28]) after our intervention.

DISCUSSION

This experiment gives the opportunity to old, vulnerable and dependent population that has no longer access to classical consultation to access eye care. At the same time, consultation informs the nursing home caregivers about the visual health status and provides environment improvement.

CONCLUSION

Teleconsultation is an alternative to classical consultation especially in dependent population. This experiment could be a starting point to the development of this solution in social health-care institutions.

Feedback on ophthalmologic telemedicine in a nursing home

INTRODUCTION

The need for ophthalmologist appointments is increasing, while the number of practitioners is decreasing. Elderly patients, who may be dependent and isolated, are the most affected by this barrier to care. In order to get around this obstacle, telemedicine visits might be an alternative.

MATERIALS AND METHODS

From June 2018 to November 2018, patients in the housing facility for dependent elderly individuals (EHPAD) at the Janzé (Ille-et-Vilaine) Medical Centre participated in an ophthalmology telemedicine visit during their stay. The telemedicine visit included measurement of visual acuity, intraocular pressure, wide field fundus photography, and optical coherence tomography (OCT) performed by a technician, and a videoconference with an ophthalmologist.

RESULTS

Sixty-seven patients aged 83±8 years (60% women and 40% men) underwent a telemedicine visit. The visit was completed in 36 (54%) cases. The fundus photography was not performed in 30 (45%) cases, and the OCT was not performed in 35 (53%) cases. We diagnosed an ophthalmologic disease in 37 (55%) patients, with medical management having begun in 14 (38%) of them. A prescription for corrective lenses was given in 30 patients (45%). Following our visit, mean logMar visual acuity experienced a statistically significant improvement from 0.67 (±0.76) to 0.52 (±0.72) (P<0.0001) for distance vision and from 0.68 (±0.84) to 0.53 (±0.76) (P<0.0001) for near vision. Eighteen per cent of patients (10) required transportation to an in-person ophthalmologist visit for continued management. With regard to low vision, the proportion of low-vision eyes experienced a statistically significant decrease from 54% to 39% [P=0.02; OR=1.86; 95% CI (1.06-3.28)] following our visit.

DISCUSSION

This experiment allowed an isolated, dependent patient population without access to classic office visits to gain access to clinical care. In addition to providing eye care to the patients, the visit increased awareness amongst the caregivers of the vision status of the residents, allowing them to adapt their environment accordingly.

CONCLUSION

Telemedicine is an alternative to classic physician visits, particularly for very dependent, institutionalised patients. This experiment might serve as a point of departure for generalised adoption of these solutions within extended care facilities.

Glaucoma Patient Knowledge, Perceptions, and Predispositions for Telemedicine

PURPOSE

The purpose was to identify factors associated with older glaucoma patients' knowledge of, perceptions of, and predispositions for telemedicine use.

MATERIALS AND METHODS

Established patients age 60 years and above with a diagnosis of primary open-angle glaucoma, glaucoma suspect, or ocular hypertension followed by a glaucoma fellowship-trained ophthalmologist were enrolled in the study at an academic, urban, tertiary referral eye clinic. Enrolled patients were administered a Life Space Questionnaire (LSQ), scored 0 to 9, and Preferences for Telemedicine Questionnaire (PTQ), a Likert scale validated tool. χ testing analyzed PTQ responses by age, race, education, employment status, LSQ score, and distance traveled from home address to clinic. A Mann-Whitney U test was used to compare PTQ responses by visual field index and visual acuity for the better and worse eye.

RESULTS

Of 110 patients enrolled, 71% of patients agreed or were neutral to receiving telediagnosis and 74% of patients agreed or were neutral to receiving teleintervention. Patients aged 60 to 69 years compared with those 70 and above had significantly greater knowledge about types of telemedicine: telediagnosis (53% vs. 31%, P=0.02), teleintervention (49% vs. 24%, P=0.006), teletriage (80% vs. 47%, P=0.0004), and telemonitoring (55% vs. 27%, P=0.003). Patients of European descent had significantly more knowledge about teletriage compared with those of non-European descent (72% vs. 53%, P=0.04). Patients with more education (>high school) compared with those with less education (≤high school) had more knowledge about telemedicine (39% vs. 16%, P=0.007) and all the uses of it: telediagnosis (61% vs. 45%, P<0.001), teleintervention (54% vs. 14%, P<0.001), teletriage (86% vs. 35%, P<0.001), and telemonitoring (59% vs. 18%, P=0.001). Patients with a LSQ score ≥6, meaning they traveled a greater distance from home in the previous 3 days, displayed significantly more knowledge about telediagnosis (49% vs. 25%, P=0.02), teleintervention (43% vs. 19%, P=0.01), and telemonitoring (47% vs. 25%, P=0.03) than those with an LSQ<6. Responses to the PTQ were not significantly different by distance traveled.

CONCLUSIONS

Knowledge of telemedicine was variable but between one third and one half of patients had favorable attitudes toward using telemedicine for glaucoma care.

Usability testing of a smartphone-based retinal camera among first-time users in the primary care setting

Smartphone-based retinal photography is a promising method for increasing accessibility of retinal screening in the primary care and community settings. Recent work has focused on validating its use in detection of diabetic retinopathy. However, retinal imaging can be technically challenging and additional work is needed to improve ease of retinal imaging in the primary care setting. We therefore performed usability testing of a smartphone-based retinal camera, RetinaScope, among medical assistants in primary care who had never performed retinal imaging. A total of 24 medical assistants performed first-time imaging in a total of five rounds of testing, and iterative improvements to the device were made between test rounds based on the results. The time to acquire a single ~50 degree image of the posterior pole of a model eye decreased from 283 ± 60 seconds to 34 ± 17 seconds (p < 0.01) for first-time users. The time to acquire 5 overlapping images of the retina decreased from 325 ± 60 seconds to 118 ± 26 seconds (p = 0.02) for first-time users. Testing in the human eye demonstrated that a single wide-view retinal image could be captured in 65 ± 7 seconds and 5 overlapping images in 229 ± 114 seconds. Users reported high Systems Usability Scores of 86 ± 13 throughout the rounds, reflecting a high level of comfort in first-time operation of the device. Our study demonstrates that smartphone-based retinal photography has the potential to be quickly adopted among medical assistants in the primary care setting.