Catalysing Interprofessional Eye Health Education Using the Arclight diagnostic tool and simulation eyes in Rwanda: Outcomes from a Mixed Methods Randomised Trial

A mixed-methods randomized trial in Rwanda demonstrated that an interprofessional eye health education intervention utilizing the Arclight diagnostic tool and simulation eyes significantly improved and sustained knowledge and skills among diverse healthcare students for up to 10 months, highlighting the effectiveness of collaborative pre-qualification training in resource-limited settings.

The Gist

Imagine a world where a simple pair of glasses or a quick eye check could save someone from going blind, but the tools to do that are too expensive, too heavy, or simply don't exist in remote villages. This is the reality for millions in places like Rwanda and other parts of Sub-Saharan Africa.

This paper tells the story of a clever experiment designed to fix that problem by teaching future doctors, nurses, and pharmacists how to work together like a well-oiled machine, using a tiny, solar-powered flashlight to check eyes.

Here is the breakdown of what they did, why it matters, and what they found, explained simply.

The Problem: A Broken Chain

Think of eye health as a chain. In rich countries, the chain is strong: there are specialists, fancy machines, and plenty of training. In poorer regions, the chain is broken. There aren't enough eye specialists, and the equipment is too expensive.

Usually, if a nurse sees a patient with an eye problem, they have to send them far away to a specialist. But by then, it might be too late. The goal was to strengthen the first link in the chain: the local health workers (nurses, midwives, pharmacists) so they can catch eye problems early.

The Solution: The "Swiss Army Knife" and a Team Huddle

The researchers introduced two main tools:

1. The Arclight: Imagine a Swiss Army Knife for eyes. It's a tiny, low-cost device that fits in your pocket. It has a light, a magnifying glass, and even a way to attach to a phone. It runs on a solar-charged battery, so it works even in places without electricity. It turns a regular health worker into someone who can see inside the eye clearly.
2. The "Team Huddle" (Interprofessional Education): Usually, nurses learn with nurses, and doctors learn with doctors. They rarely mix. This study forced them to learn together. They put medical students, nursing students, pharmacy students, and midwives in the same room to learn eye care as a team.

The Experiment: The Training Camp

The researchers gathered 443 final-year students from the University of Rwanda. They split them into two groups:

• The Training Group: These students got the "Team Huddle." They spent two days learning how to use the Arclight, how to check eyes, and how to talk to each other about patient care.
• The Control Group: These students just read the manuals on their own. They didn't get the hands-on team training.

They tested everyone before the training, immediately after, and then 10 months later to see if they remembered anything.

The Results: A Spark That Lasted

The results were like watching a group of people learn to ride a bike and then realizing they could still ride it a year later.

• Immediate Success: Right after the training, the "Training Group" knew way more about eyes and how to check them than before. Their scores jumped up by nearly 60%. They also got much better at the practical skills, like using the Arclight to look inside an eye.
• The Long Haul (10 Months Later): This is the most exciting part. Usually, when you learn something and don't use it, you forget it (like trying to remember a math formula from 10 years ago). But 10 months later, the trained students still remembered most of what they learned. Their scores were still way higher than the group that just read the manuals.
• The Teamwork Bonus: The students didn't just learn how to check eyes; they learned who to call for help. They realized that a pharmacist, a nurse, and a doctor all have different superpowers that help the patient. They felt more confident working together.

The "So What?" (Why This Matters)

Think of this like teaching a whole neighborhood how to put out small fires before they become wildfires.

• For the Patients: Instead of waiting months to see a specialist who might be hundreds of miles away, a local nurse can now spot a serious eye problem immediately and fix it or refer it quickly.
• For the System: It's cheap and scalable. You don't need expensive hospitals; you just need these small, solar-powered tools and people who know how to use them together.
• For the Future: The study proved that you can teach these skills before the students even graduate. They are "practice-ready" the day they start their jobs.

The Catch

The researchers did note one small hiccup: While the students remembered the knowledge (the facts) very well, their skills (the physical act of checking the eye) dropped a little bit over the 10 months. This is like learning to play the piano: if you don't practice for a few months, your fingers get a bit stiff. But even with that slight drop, they were still far better than if they had never learned at all.

The Bottom Line

This paper shows that if you give future health workers the right tools (the Arclight) and teach them to work as a team (Interprofessional Education), they can become powerful defenders against blindness. It's a simple, low-cost recipe that could help millions of people see clearly, even in the most remote corners of the world.

Technical Summary

1. Problem Statement

Visual impairment is a critical public health issue, disproportionately affecting Sub-Saharan Africa (SSA) and Southeast Asia, where prevalence is eight times higher than in high-income regions. Rwanda faces a growing burden of eye disease, exacerbated by a chronic shortage of ophthalmic specialists, diagnostic equipment, and trained personnel. While initiatives like "Vision 2020" have developed mid-level eye care professionals, there remains a gap in collaborative practice at the community level. Current models often rely on role-based referrals rather than true interprofessional collaboration. Furthermore, there is a lack of evidence regarding the long-term retention of eye health knowledge and skills acquired through Interprofessional Education (IPE) in resource-constrained settings.

2. Methodology

The study employed an explanatory sequential mixed-methods design, combining a Randomised Controlled Trial (RCT) with qualitative assessment.

• Setting & Participants: Conducted at the University of Rwanda with 443 final-year students from five disciplines: Nursing, General Medicine, Midwifery, Pharmacy, and Ophthalmic Clinical Officers (OCOs).
• Study Design:
  • Randomisation: Participants were block-randomised into an Intervention Group (n=180) and a Control Group (n=100).
  • Intervention: A validated Interprofessional Eye Health Education (IPEHE) program consisting of two days of in-person training.
    • Tools: Utilized the Arclight package (a low-cost, solar-powered, portable diagnostic tool including an anterior segment loupe, direct ophthalmoscope, and otoscope) and simulation eyes for practicing conditions like leukocoria.
    • Curriculum: Covered theoretical knowledge (anatomy, common diseases, IPE principles, ICF framework) and practical skills (visual acuity testing, fundal reflex, holistic history taking, referral pathways).
    • Pedagogy: Active, interactive learning where students learned with, from, and about each other.
  • Control: Received course content for individual review without the interactive IPE training or Arclight tools.
• Assessment Timeline:
  • PRE: Baseline assessment (Intervention group only).
  • POST1: Immediate post-training assessment (Intervention group only).
  • POST2: 10-month follow-up assessment (Both groups).
• Outcome Measures:
  • Quantitative: Knowledge (10 MCQs on IPC and eye health) and Skills (4-station OSCE covering history taking, visual acuity, red reflex, and collaborative management).
  • Qualitative: Free-text feedback and thematic analysis based on the University of British Columbia (UBC) IPE model (Exposure, Immersion, Mastery).
• Statistical Analysis: Used paired t-tests, Wilcoxon signed-rank tests, ANOVA, and Kruskal-Wallis tests to compare scores. Qualitative data was analyzed using reflexive thematic analysis.

3. Key Contributions

• Long-term Retention Evidence: This is the first study to demonstrate that IPEHE interventions in SSA result in significant retention of both knowledge and skills 10 months post-intervention.
• Frugal Innovation in Education: Successfully validated the use of the Arclight (a low-cost, solar-powered diagnostic tool) and simulation eyes as effective vehicles for delivering high-quality IPE in low-resource settings.
• IPE Framework Application: Demonstrated the efficacy of the ICF (International Classification of Functioning, Disability and Health) framework in fostering a holistic, collaborative approach to eye care among diverse health professions.
• Pre-qualification Impact: Provides evidence that integrating IPE into undergraduate curricula effectively produces "practice-ready" professionals capable of collaborative eye care before they enter the workforce.

4. Key Results

• Participation: 161 intervention students (89.4%) attended training; 113 (70.2%) completed the 10-month follow-up. 90 control students (90%) completed the 10-month follow-up.
• Knowledge Acquisition (Short-term):
  • Intervention group knowledge scores increased by 58.9% immediately post-training (p<0.001).
  • Ophthalmic Clinical Officers (OCOs) started with higher baseline knowledge but still showed significant gains.
• Skill Acquisition (Short-term):
  • Skills scores improved by 49.7% immediately post-training (p<0.001).
  • Greatest improvements were seen in red reflex assessment (+59.5%) and visual acuity testing (+55.4%).
• Long-term Retention (10 Months):
  • Knowledge: Intervention group scores remained significantly higher than baseline (75% average) and significantly higher than the control group (54.1% difference, p<0.001).
  • Skills: While there was a slight decline from POST1 to POST2 (approx. 8.9% drop), intervention skills remained significantly higher than baseline and 44% higher than the control group (p<0.001).
  • Profession Differences: Midwifery and Pharmacy students showed less skill decline compared to General Medicine and Nursing students.
• Qualitative Findings:
  • Themes: Participants valued the holistic approach, interprofessional collaboration, and the practical utility of the Arclight tools.
  • Challenges: Concerns were raised regarding professional hierarchy and resistance to change from established routines in clinical settings, which could hinder the transfer of learning to practice.

5. Significance

This study provides robust evidence that Interprofessional Education (IPE), when combined with frugal diagnostic technologies like the Arclight, is a scalable and effective strategy for addressing the eye health workforce crisis in Low- and Middle-Income Countries (LMICs).

• Policy Implication: It supports the integration of IPEHE into pre-qualification health curricula in Rwanda and similar SSA contexts to create a collaborative workforce capable of managing primary eye care.
• Global Health Impact: The findings suggest that resource-limited settings can overcome equipment and specialist shortages by training a broader range of health professionals (nurses, pharmacists, midwives) to perform basic eye diagnostics and collaborate effectively.
• Sustainability: The demonstration of knowledge and skill retention over 10 months indicates that such training is not just a "one-off" event but establishes a durable competency base, provided that post-graduation support and refresher training are available to mitigate skill decay during the transition to practice.