Take-home points
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Bios Ranveer Palia is a 2nd-year medical student at the Medical College of Wisconsin, Milwaukee. |
A 46-year-old African-American man with poorly controlled type 1 diabetes presented to clinic with blurry vision. He was diagnosed with proliferative diabetic retinopathy in both eyes, complicated by diffuse capillary nonperfusion involving the macula (Figure 1). His visual acuity measured 20/200 in the right eye and 20/400 in the left. The consulting physician at the time recommended treatment, but the patient was lost to follow-up.
Two years later, the patient presented to our clinic with worsening vision, now reduced to hand motions in both eyes. Examination showed bilateral fovea-involving tractional retinal detachments (Figure 2). Further questioning revealed that the patient was unemployed, faced housing and food instability, and depended on public and Medicaid transportation to get to medical appointments. Surgical intervention was recommended; however, the patient’s prognosis for visual recovery was dismal, and his case illustrates how much worse outcomes can be when patients are lost to follow-up, often due to challenges related to social determinants of health.
Unfortunately, stories like this one aren’t uncommon in retinal practice. Retinal diseases remain a leading cause of vision loss and blindness worldwide. While risk factors such as diabetes, hypertension, aging, smoking and trauma are well established, outcomes are also shaped by SDOH. These include factors such as income, access to care, health literacy, transportation, food insecurity and social support.1 Healthy People 2030 has defined SDOH as “the conditions in the environments where people are born, live, learn, work, play, worship and age,” and further grouped SDOH into five domains: economic stability; education access and quality; health-care access and quality; neighborhood and built environment; and social and community context.2 Together, these conditions often determine whether patients can obtain timely diagnosis, initiate treatment and adhere to follow-up schedules.
There’s growing recognition that SDOH play a pivotal role in ophthalmology, influencing disparities in diagnosis, treatment access, adherence and long-term outcomes. Two patients with the same disease severity may have vastly different prognoses depending on the social and economic contexts in which they live.
In this article, we highlight how SDOH affect the care and prognosis of three key retinal diseases: diabetic retinopathy, retinal vein occlusion and rhegmatogenous retinal detachment. Through these examples, we highlight how non-biological factors drive disease burden and outcomes, and why addressing them is critical to reducing inequities.
Diabetic retinopathy
Specific SDOH drivers have been extensively studied. Food insecurity not only worsens diabetes control but also reduces the likelihood of patients pursuing vision care, with both food and housing instability associated with lower odds of DR screening.8,9 Economic stability plays a similar role: Unemployment, disability, and financial hardship decrease access to preventive care.5,6 Race, ethnicity and cultural factors introduce additional disparities, with minority populations less likely to undergo guideline-based monitoring, while childcare responsibilities and perceived provider bias further reduce access.7,10-11
Access to health care and insurance coverage remain central issues: Insurance status and higher education improve the odds of completing annual exams, while lack of coverage, financial insecurity and transportation barriers increase the risk of advanced complications.12-14 Broader reviews emphasize that systemic issues—including language barriers, limited provider availability and fragmented coverage—continue to shape inequities in vision care.15,16
The implications of these findings are clear. Tailoring prevention strategies by employment status, geography or disability may improve screening rates, and increasing awareness of DR in underserved communities could provide an entry point for preventive diabetes care.3-4 Structural barriers must also be addressed through expanded insurance coverage, transportation support and multilingual resources.15 At a systems level, incorporating SDOH into electronic health records may allow clinicians to anticipate patient needs and design interventions accordingly.16 In parallel, culturally sensitive approaches are essential for reducing disparities in racial and ethnic minority groups.10,11
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| Figure 1. Multimodal imaging of the patient in 2023 when he presented with visual acuities of 20/200 in the right eye and 20/400 in the left eye. Color photos of the right (A) and left (D) eyes show neovascularization of the disc and elsewhere, and severe vascular attenuation. Fluorescein angiograms of the right (B) and left (E) eyes confirm presence of neovascularization of the disc and elsewhere as well as diffuse capillary nonperfusion affecting the macula worse in the left eye. Optical coherence tomography of the macula of the right (C) and left (F) eyes demonstrate diffuse retinal thinning. |
Retinal vein occlusion
While this has yet to be demonstrated, a recent retrospective study found that among patients presenting with BRVO with cystoid macular edema who were treated with intravitreal anti-VEGF injections, those with higher socioeconomic deprivation scores had thicker final central macular thickness.23 Additionally, non-White patients had worse initial and final best corrected visual acuity. Both these results point to disparities in visual outcomes associated with lower socioeconomic status among patients with RVOs.
More recently, an analysis of over 600 cases of RVO from the National Institutes of Health’s All of Us database further highlighted the role of social determinants in disease risk. In addition to confirming traditional medical risk factors mentioned above, the study found that patients who identified as Black and those with opioid use were independently associated with an increased risk of both BRVO and CRVO, highlighting the need for further investigation into how social and behavioral factors contribute to RVO.24
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| Figure 2. The patient was lost to follow-up and returned two years later with worsening vision in both eyes to hand motions. Fundus photos of the right (A) and left (C) eyes show progressive proliferative diabetic retinopathy with bilateral fovea-involving tractional retinal detachments with thick fibrovascular membranes extending from the optic nerve head to both the superotemporal and inferotemporal arcades. Optical coherence tomography of the right (B) and left (D) eyes through the macula confirm tractional retinal detachments, showing the retinal layers pulled anteriorly in a tent-like configuration with complete loss of the normal foveal contour. |
Rhegmatogenous retinal detachment
Large-scale studies from major U.S. academic centers have found that factors such as older age, male gender, minority race and lower income are independently associated with more severe presentation.26,27 Patients with public insurance (Medicare/Medicaid) or no insurance have worse baseline visual acuity and higher rates of fovea-involving detachments compared to those with private insurance.26-28 Neighborhood-level factors, including area deprivation indices and transportation barriers, also predict worse baseline severity even after controlling for individual characteristics.27 International studies from Scotland and other countries have reported similar patterns, with retinal detachment severity correlating inversely with socioeconomic status.25,29
Beyond initial presentation, socioeconomic disadvantage affects surgical outcomes. Patients from disadvantaged backgrounds face higher reoperation rates and worse long-term visual outcomes, even after accounting for baseline disease severity.26,28 These disparities persist across different health-care systems and geographic regions.
These disparities matter because RRD outcomes have been shown to be closely linked to baseline visual acuity and foveal status.30 Delays in presentation allow progression to foveal involvement, where subfoveal fluid can cause irreversible photoreceptor damage.31-33 Socioeconomic barriers to timely care—including limited health-care access, transportation challenges and delayed symptom recognition—directly compromise visual outcomes in this sight-threatening condition.
Bottom line
Addressing these disparities requires multi-level interventions. At the patient level, culturally sensitive education, awareness campaigns, and navigation support can encourage timely care and adherence to screening guidelines. At the system level, telehealth initiatives and integration of SDOH into electronic health records can mitigate barriers, particularly for historically underserved populations. Another promising system-level strategy involves leveraging federally qualified health centers, which are uniquely positioned to extend vision care to communities most affected by social and structural inequities.
FQHCs serve over 30 million Americans, most of whom are uninsured or publicly insured, and yet fewer than 3 percent of patients receive vision services, even though they face disproportionately higher rates of diabetic retinopathy, glaucoma and vision impairment.35 Many patients and providers alike are unaware that FQHCs can be powerful partners in preventing vision loss. Retina specialists and ophthalmology practices can help change this by building closer relationships with local FQHCs—offering on-site or teleophthalmology screening, rotating clinics or streamlined referral networks. Such collaborations can bring retinal expertise directly to patients who might otherwise never see a specialist, while connecting those identified with eye disease to the enabling services FQHCs already provide like transportation, translation and case management.36,37
Beyond improving access, these partnerships can foster awareness within the community that vision care is an important part of comprehensive health care. Moreover, investing in FQHC-based vision programs isn’t only the ethical thing to do but also yields long term economic benefits. FQHCs prevents avoidable blindness, which reduces long-term health costs and helps maintain the independence and productivity of those most affected by social and structural inequities.36,37 By engaging with FQHCs, retina specialists have an opportunity not only to treat disease but to transform the systems that determine who gets to keep their sight, bringing us closer to equitable vision care for all. RS
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