Objective pupil reactivity testing. Now in your smartphone.

Through the power of Artificial Intelligence, we are revolutionizing patient care.

Forget about forgetting your penlight.

We introduce the most advanced smartphone-enabled pupillometry medical device.


Pupil assessment needs a revolution.

Assessment of pupils provides vital insights about patients’ current neurological function. Yet, pupil size and reactivity testing tend to be either subjective and thus prone to inaccuracies or performed with expensive and cumbersome pupillometer devices.


of intensive care nurses express the need for better pupil assessment.


need a second opinion following pupil examination with a penlight.


notice reactivity difference in pupillometer  / visual inspection comparison.


Introducting the mPenlight app

Solvemed’s revolutionary smartphone-based medical device enables accurate and reliable pupil size and reactivity testing without the need for any hardware device.


Regulated class I medical device.


Designed for maximum privacy and security.


Accuracy & reliability proven clinically.

Reduces risks

Offers the trust you need when examining the brain.

Works offline

No internet needed to conduct tests.

User friendly

Faster to use than a traditional penlight.


Medical specialties we empower

We are proud to satisfy the needs of the world's leading practitioners across the spectrum of care.

In critical care settings, frequent pupil examination is of paramount importance. By assessing the size, symmetry, and reactivity of the pupils, healthcare professionals can gain valuable insights into the patient's neurological status. Abnormalities or changes in pupillary response can indicate brain injury, increased intracranial pressure, or other neurological issues.​

Pupillometry is an easy-to-use non-invasive bedside technique to quantify nociception and monitor opioid effects. Specifically, pupil dilation reflex via automated increased tetanic stimulation may reflect opioid effect under general anaesthesia. Pupillometry has the potential to personalize pain management in perioperative and critical care unit environments and help monitor the depth of sedation.​

Pupils are sensitive to a wide range of neurological diseases. Any damage to the brainstem, from bleeding, had injury or stroke, can squash the nerves, which can warn neurologists that a patient needs immediate brain surgery. For example, multiple sclerosis often reduces light signals that constrict the pupil, in a characteristic way, even when symptoms are minor. Damage to the nerves in the neck affect dilation, and can warn us about impending strokes. Also, a range of drugs can affect these pathways in distinctive ways, and can give a tell-tale sign that an unconscious patient may need life-saving drugs.

Nurses play a crucial role in patient care, and subjective pupil examination is an essential component of their monitoring toolkit. By regularly assessing pupils, nurses can detect early signs of patient deterioration, adverse drug reactions, or neurological changes. Monitoring changes in pupil helps nurses provide timely interventions, collaborate with healthcare teams, and ensure patient safety and well-being.

By quantifying the pupil light reflex, ophthalmologists can assess the functionality of the visual pathways and diagnose ocular diseases, including optic nerve disorders and severe retinal conditions, as well as trauma-related damage to the visual pathways and oculosympathetic denervation. Also, with the continuous development of refractive surgery, pupillometry has proven to be a useful tool both for evaluating and planning keratorefractive surgeries, and for the pre-operative assessment of intraocular lens placement​.

Neuro-ophthalmologists specialize in diagnosing and managing conditions that affect both the eye and the nervous system. Pupil examination plays a critical role, as it helps identify optic nerve dysfunction, visual pathway abnormalities, or neurological disorders impacting vision. By evaluating pupillary responses, neuro-ophthalmologists can differentiate between various etiologies and develop tailor treatment.

Within sport science, the examination of pupils offers a unique and powerful lens into an athlete's neurophysiological state. Beyond the basics of assessing light reflexes, the size, reactivity, and symmetry of pupils can provide insights into hydration status, fatigue, and potential concussive injuries. As athletes push their bodies to the limit, subtle changes in the pupils can be early indicators of systemic imbalances or stressors, allowing for timely interventions.

Designed for practitioners looking to end the era of subjective pupil reactivity examination.

Designed for





looking to end the era of subjective pupil reactivity examination.


What experts say

We work closely with clinicians to develop game-changing tools that reshape clinical practice and research.


Dr. Gregg J. Berdy, M.D.

President of Ophthalmology Associates, ran the FDA’s pivotal Xalatan trial. Anterior segment surgeon, elected to membership in the prestigious Castroviejo Corneal Society.

Nobody tracks pupils accurately. Industry-wide standardised pupillary measurements are the future of care. There is high demand for a smartphone-enabled, reliable, scalable noninvasive diagnostic. This would be adopted across the entire industry."


Dr. Simon Raby, M.D.

Clinical Director Oxford Major Trauma Centre

With accurate, repeatable assessment of pupil size, this application could improve diagnosis of life-threatening complications of traumatic brain injury. This could reduce time to surgery, improve tertiary neurosciences services and deliver patient centred care.


Professor Fion Bremner, M.D.

Consultant Neuro-ophthalmologist and Ophthalmic Surgeon, University College London Hospitals, President of European Neuro-Ophthalmology Association

If an App could be developed allowing pupil measurements to be made using a smartphone then this would be hugely valuable and I predict would very quickly become part of standard clinical practice.


Professor Sanjay Manohar, M.D.

Neurologist and Clinical Researcher, Oxford University

Solvemed is likely to succeed because of its unique combination of scientists, programmers and clinicians working on the problem.


Dr. James E. Neffendorf, M.D.

Consultant Ophthalmologist and Vitreoretinal Surgeon (Locum) at King’s College Hospital NHS Foundation Trust

The Solvemed AI penlight/pupillometer has the potential to modernise pupillary assessment and improve patient care.


We turn consumer devices
into powerful medical tools.

Our ground-breaking smartphone-based approach enables scalable collection
of information-rich neurological biomarker datasets.


We discover & validate novel digital biomarkers

We are proud to spearhead interdisciplinary research collaborations to enable biomarker discoveries and improve patients’ health.


Knowledge base

The latest company updates, scientific publications, and captivating articles.


Solvemed attending CHEST 2023 Conference

Solvemed Leadership was honoured to get even closer to this amazing group of clinicians by attending this year's CHEST 2023, a premier gathering for critical care clinicians organized by the American College of Chest Physicians.


Solvemed at the Emergency Nurses Association Annual Conference 2023

Last week our Leadership was delighted to participate in ENA2023, one of the world’s largest Emergency Nursing conferences organised by the US Emergency Nurses Association.


Education partnership for the 38th Annual British Association of Critical Care Nurses  

After successful appearances at Mayo Clinic's Annual Critical Care Conference in Orlando and Neurocritical Care Society Annual Meeting in Phoenix it was time to visit the UK. We are thrilled to announce that our Clinical AI Researcher, Dr Ivo John was representing Solvemed at the 38th Annual British Association of Critical Care Nurses (BACCN) conference in Nottingham last week. Even more so, we are proud to have been an Education Partner for this great event! 

Decoding neurology.
In the blink of AI.

Pupil reactivity testing app of choice for world's top practitioners.

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