Introduction

Hospitalization poses distinct challenges for patients with diabetes, particularly those managing a hyperosmolar hyperglycemic state (HHS) or other acute glycemic crises. In these settings, maintaining stable blood glucose levels is critical, and innovative tools such as diabetic smart contact lenses offer a noninvasive method for continuous glucose monitoring. However, the effectiveness of these devices depends heavily on proper patient education. Without clear, accessible resources, patients may misuse the lenses, misinterpret data, or fail to report complications promptly. This expanded guide outlines essential educational materials and strategies to help HHS patients—and all hospitalized individuals with diabetes—confidently use diabetic lenses during their stay and after discharge.

HHS is characterized by extreme hyperglycemia (often above 600 mg/dL), severe dehydration, and altered mental status. The condition requires intensive monitoring and rapid correction. Diabetic lenses, which measure glucose in tear fluid via microsensors, provide real-time trend data that can alert clinicians to dangerous swings before they become critical. Yet the technology only delivers benefits when patients and caregivers understand its use, limitations, and emergency procedures. This article builds on foundational knowledge with practical, evidence-based teaching methods.

Understanding Diabetic Lenses: How They Work and Their Relevance to HHS

Diabetic lenses are not ordinary contacts. They are medical devices embedded with microsensors that detect glucose levels in tears. A tiny wireless transmitter sends readings to a paired smartphone or bedside monitor, offering continuous, noninvasive data. For a patient in an HHS episode, where blood sugar may exceed 600 mg/dL and dehydration worsens, a lens that alerts the care team to rapid changes can prevent dangerous complications such as seizures, cerebral edema, or coma.

Beyond mechanics, patients need to grasp the lens’s role within their overall diabetes management plan. Unlike fingerstick checks, which provide intermittent snapshots, these lenses deliver trends—rising, falling, or stable—enabling clinicians to adjust insulin drips, IV fluids, and oral medications with greater precision. It is essential to emphasize that the lens is a supplement, not a replacement, for traditional blood glucose monitoring, especially in acute settings where tear glucose may lag behind blood glucose by 10–15 minutes. Education must cover this lag to avoid false reassurance or inappropriate responses.

Specific to HHS, the lens can detect early signs of decompensation. When a patient’s glucose begins to rise above target, the lens triggers an alarm, prompting immediate intervention—such as increasing insulin rate or checking for infection—before the patient faces another crisis. Teaching patients to recognize and act on these alarms is a cornerstone of safe use.

Key Educational Resources for HHS Patients

Effective education uses a mix of low-tech and high-tech materials to accommodate diverse learning needs. Below are the primary resource types, each with concrete suggestions for content and delivery, tailored to the HHS population.

Instructional Brochures and Handouts

Printed materials remain valuable, even in modern hospitals. Brochures should be written at a fifth-grade reading level, with large fonts (at least 14-point) and high-contrast colors—black text on white or yellow—to accommodate patients with diabetic retinopathy or blurred vision from HHS. Include step-by-step illustrated guides for:

  • Sanitizing hands and lens case before insertion
  • Proper lens orientation (avoiding flipping inside out)
  • Applying and removing lenses without tearing the sensor membrane
  • Troubleshooting common alerts: low battery, sensor error, poor adhesion
  • Daily cleaning using only manufacturer-recommended solutions
  • Recognizing signs of ocular infection (redness, pain, discharge) and when to remove the lens

Every brochure should contain a contacts card with phone numbers for the diabetes educator, on-call endocrinology, the lens manufacturer’s support line, and the hospital’s 24/7 nursing unit. Offer materials in Spanish, Mandarin, Vietnamese, and other languages common to your patient population. For patients with extremely low health literacy, consider a simple pictorial checklist that uses icons instead of words.

Video Tutorials and Digital Media

Short, focused videos (two to three minutes each) can demonstrate techniques more clearly than text alone. Hospital tablets or bedside entertainment systems can host a playlist. Cover these key topics:

  • Insertion and removal of the lens (live action with a mannequin and on-screen captions)
  • Pairing the lens with a smartphone app via Bluetooth and navigating the interface
  • Reading the glucose display—color-coded zones (green for normal, yellow for caution, red for urgent) and numeric values
  • Recognizing and responding to alarms: what the different tones mean and when to call the nurse
  • What to do if the lens becomes dislodged, the eye becomes red or painful, or the sensor detaches

Consider QR codes affixed to the brochure that link directly to these videos. This allows family members who may not be present during initial training to learn remotely from their own devices. For the HHS patient with lingering confusion or vision impairment, have a nurse play the video during a one-on-one session and provide verbal narration.

In-Person Demonstrations and Teach-Back

Hands-on practice with a diabetes educator or trained nurse is irreplaceable. During a 15- to 20-minute session, the clinician should:

  • Observe the patient insert and remove the lens
  • Verify the patient can read and interpret the glucose data, including trending arrows
  • Practice a “response drill”: what to do when an alarm sounds (e.g., verify with fingerstick, notify nurse, check for dehydration)
  • Simulate a scenario where the lens reading seems inconsistent with symptoms (e.g., feeling shaky but lens shows normal) and teach the patient to trust symptoms over the device

Use the teach-back method—ask the patient to explain or demonstrate the steps in their own words. This confirms understanding and identifies gaps that need reteaching. Document the session in the electronic health record so every shift knows the patient’s educational status and any needed accommodations (e.g., magnifying mirror, nurse assist). For HHS patients with cognitive impairment due to hyperglycemia, schedule repeat sessions as mental clarity improves.

Digital Resources and Telehealth Support

The hospital’s patient portal or a dedicated diabetes education app can house FAQs, a discussion forum moderated by nurses, and links to reliable sources. After discharge, telehealth visits allow patients to connect with an endocrinologist or educator for follow-up questions on lens use and glucose management. Reimbursement for telehealth grew significantly during the pandemic and remains widely available for diabetes management.

Integrate the lens data with the hospital’s continuous glucose monitoring (CGM) system if possible—many platforms are now compatible. This creates a seamless record that both the patient and care team can access. For HHS patients, this is especially beneficial because the lens alerts can feed directly into the electronic medical record, triggering automatic notifications for rising or falling levels. Encourage patients to enable data sharing so their outpatient provider can monitor trends post-discharge.

Implementing Educational Strategies During the Hospital Stay

Education must be woven into the patient’s daily care plan from admission through discharge. Here are actionable steps for hospitals and clinicians, with special considerations for HHS patients.

Incorporate Education into the Admission Process

When a patient with HHS is admitted, the admitting nurse or diabetes educator should immediately determine if the patient uses (or will use) a diabetic lens. If the lens is already in place, check its functionality and battery life upon arrival. If the patient is new to the device, start with a brief orientation within the first four hours of admission—use a calming tone to avoid overwhelming the often confused patient. Provide the brochure and direct the patient to the video playlist on the bedside tablet. Document the start of education in the care plan.

For patients admitted in a critically high glucose state, delay hands-on training until the glucose is trending downward and the patient can focus. In the meantime, educate the family or designated caregiver on basic lens checks and alarms.

Train the Entire Care Team

Nurses, patient care assistants, and even dietary staff should understand what the lens looks like, how it measures glucose, and whom to call if an alert sounds. A 30-minute in-service at shift change, with a hands-on demonstration, ensures consistency. Create a lens quick-reference card that fits in the pocket and lists:

  • Normal reading range versus HHS thresholds (e.g., >250 mg/dL triggers an alert)
  • How to silence false alarms temporarily (e.g., when lens is still calibrating)
  • Signs of conjunctival irritation that require lens removal (redness, swelling, pain)
  • Emergency steps if the lens appears stuck (do not force removal—call ophthalmology)
  • How to obtain a replacement lens from the hospital pharmacy or supply closet

Consider a unit champion—a nurse who receives advanced training and acts as a resource for colleagues. This person can lead the in-service and troubleshoot problems during off-hours.

Address Patient-Specific Barriers

Patients with HHS often have blurred vision, peripheral neuropathy, hand tremors, or cognitive slowing that makes lens handling difficult. For these individuals, consider:

  • Using a magnifying mirror or a handheld lens inserter device (available from the manufacturer)
  • Having a family member or nurse assist with insertion and removal
  • Providing verbal step-by-step instructions with pause time for processing—repeat key points twice
  • Offering a “buddy system” where a peer who successfully uses the lens shares tips (via video call)

For patients with limited health literacy, pair the brochure with a simple pictorial checklist they can keep at the bedside. The goal is to build confidence, not overwhelm. Use plain language: instead of “calibrate,” say “let the lens warm up for 10 minutes”; instead of “contraindications,” say “when you should not use the lens.”

Use Teach-Back at Every Shift Change

Each nursing shift should include a brief review: “Show me how you check your lens reading” or “What would you do if the lens started to hurt?” Repeated practice reinforces learning and flags errors early. Document any new education in the plan of care. For the HHS patient whose cognitive status fluctuates, the night shift may need to repeat the same lesson after the patient has rested.

Make teach-back a standard part of the bedside report. The outgoing nurse can say, “Mr. Jones is using lens brand X; he inserted it himself this morning but still struggles with the alarm settings.” The incoming nurse then spends 60 seconds re-teaching the alarm response.

Post-Discharge Support: Ensuring Long-Term Success

The transition from hospital to home is a vulnerable period for HHS patients. Many are discharged on new insulin regimens, and a diabetic lens can help smooth this transition—provided the patient knows how to use it without the safety net of 24-hour nursing. Post-discharge resources should be planned before the patient leaves the hospital.

Structured Follow-Up Within 48-72 Hours

A diabetes educator or care coordinator should call the patient within two days of discharge to:

  • Confirm the lens is still active and readings are accessible on the paired device
  • Review any hypoglycemia or hyperglycemia alarms that occurred since leaving the hospital
  • Answer questions about lens care (cleaning, replacement schedule, where to buy supplies)
  • Schedule a telehealth visit with the endocrinologist if glucose trends are concerning
  • Ensure the patient has the manufacturer’s app installed and is familiar with its reporting features

Automated text reminders for lens replacement (most lenses require a new device every 7–14 days) can be sent via the manufacturer’s app or a hospital-affiliated platform. Provide a written schedule for lens changes on the discharge summary.

Remote Monitoring and Integration with CGM

Many diabetic lens systems allow data sharing with a healthcare provider. Encourage patients to enable this feature. The care team can then review trends remotely and intervene before the patient slips into another HHS episode. Post-discharge telehealth appointments should include a review of the lens-glucose diary alongside traditional logs. If the patient reports any gaps in readings, troubleshoot the connection or sensor placement.

For patients without a smartphone, the hospital should arrange a simple data-sharing device that transmits to a cloud portal. Social workers can help obtain a smartphone through assistance programs if needed.

Support Groups and Online Communities

Connecting patients with others who use diabetic lenses can reduce anxiety and provide practical tips. Hospital social workers or diabetes educators can recommend reputable online forums such as the Diabetes Daily community or local support groups. Peer stories about troubleshooting lens dislodgement, traveling with spare batteries, or explaining the device to family members are invaluable. Consider a monthly video support group run by the hospital’s education department.

Handling Emergencies at Home

The discharge packet must include clear emergency instructions:

  • When to go to the ER (sustained high glucose not responding to correction despite insulin, severe eye pain, vision changes, or signs of corneal ulcer)
  • Steps to remove the lens if an infection is suspected—use clean hands and a sterile container to save the lens for analysis
  • How to reach the on-call endocrinologist after hours (direct phone number, not through the operator)
  • What to do if the lens won’t come out (do not pull—flush with saline and call ophthalmology)

Patients should leave the hospital with a printed or digital “lens passport” that lists their device model, serial number, manufacturer contact, date of first use, and insurance coverage details. This document can be shown to any new provider or pharmacist.

Additional Considerations: Regulations, Insurance, and Device Access

While clinical education is central, patients also need guidance on the administrative side of diabetic lens use. Hospital staff should provide information about:

  • Insurance coverage: Many private insurers and Medicare Part B now cover noninvasive glucose monitors, but prior authorization is often required. Social workers can help patients obtain coverage before discharge and file necessary appeals if denied.
  • Cost transparency: Explain copays, deductibles, and manufacturer patient-assistance programs to avoid surprise bills that might discourage future use. Provide a cost estimate worksheet.
  • Device disposal: Diabetic lenses contain electronic components and should not be flushed. Provide a stamped, pre-addressed envelope for safe recycling or a list of local drop-off locations.
  • Prescription renewal: The lens is a medical device requiring a prescription. Ensure the patient knows how to contact the prescribing ophthalmologist or endocrinologist for refills.

Patients should also be aware of the FDA’s guidance on caring for eye-based glucose monitoring systems to prevent contamination and equipment failure. Additionally, refer patients to the CDC Hospital Diabetes Guidelines for an overview of inpatient management standards.

Future Directions and Research

The field of smart contact lenses for diabetes is evolving rapidly. Newer models promise longer wear times (up to 30 days), integrated insulin delivery via microneedles, and multi-analyte sensors that measure glucose, lactate, and ketones simultaneously. For HHS patients, a lens that detects ketones could be a game-changer, signaling diabetic ketoacidosis long before symptoms appear—a crucial early warning after an HHS episode.

Researchers are also exploring closed-loop systems that connect the lens directly to an insulin pump, creating an artificial pancreas. While still in clinical trials, these systems could reduce the burden of HHS management in the future. Hospitals should stay informed about these advancements and update educational materials accordingly. Encourage patients to review American Diabetes Association clinical practice recommendations and peer-reviewed studies on noninvasive glucose monitoring for the latest evidence. A proactive education program not only improves individual outcomes but also generates data that can refine hospital protocols and inform future device design.

Conclusion

Empowering HHS patients to use diabetic lenses effectively during hospital stays and at home requires a comprehensive, patient-centered educational approach. By combining clear printed materials, engaging video tutorials, hands-on practice, and robust post-discharge support, healthcare teams can reduce the risk of acute complications and improve long-term glycemic control. When patients understand not only how to use the lens but also why it matters, they become active partners in their own care—especially important for a condition as volatile as HHS. Investing in these educational resources today leads to safer hospital stays and healthier tomorrows for people living with diabetes. For more detailed implementation guides, refer to the Joint Commission’s patient education standards and the CDC Diabetes Management Toolkit.