The eyes are often described as windows to the soul — but for a trained iridologist, they are also a detailed map of the body’s health. Iridology in London is one of the lesser-known services Marijke Vogel offers at Phenomenal Colonics, yet for many clients it becomes one of the most illuminating appointments they have had. This article explains what iridology is, what a session with Marijke involves, and who it may be useful for.
What Is Iridology?
Iridology is the study of the iris — the coloured part of the eye — as a tool for assessing patterns that may reflect the condition of different systems and organs in the body. Practitioners use a detailed map of the iris, divided into zones corresponding to different areas of the body, to identify variations in colour, texture, and structure that may point to areas of strength, weakness, or congestion.
It is a practice with a long history in naturopathic medicine, developed significantly in the nineteenth century by Hungarian physician Ignaz von Péczely and subsequently refined by practitioners including Dr Bernard Jensen, whose work Marijke has studied in depth. Today it forms part of a broader naturopathic assessment toolkit used by qualified practitioners alongside nutrition, herbal medicine, and other complementary approaches.
Iridology is a complementary therapy, not a diagnostic tool in the conventional medical sense. It does not diagnose disease and is not a substitute for medical examination. What it offers is a detailed, holistic overview of constitutional tendencies and areas of the body that may benefit from attention — a starting point for a more informed conversation about health.
What Does an Iridology Session With Marijke Involve?
Marijke is a qualified iridologist with over 25 years of clinical experience, trained in the tradition of naturopathic iridology and deeply familiar with the constitutional maps that form the foundation of the practice.
At the start of your session, Marijke examines both irises using a specialised light and magnification. She studies the patterns, markings, and pigmentation in each zone of the iris carefully and methodically. The examination itself is non-invasive and entirely comfortable — there is no contact with the eye, no equipment placed near it, and no discomfort involved.
Following the examination, Marijke takes time to walk you through what she observed. She explains which areas of the body the iris markings correspond to, what they may suggest about constitutional strengths and vulnerabilities, and what practical steps — dietary, lifestyle, or supplementary — might be worth considering in response. This is not a rapid overview. Marijke gives each client the time and attention needed for the findings to be genuinely useful rather than superficial.
Clients often leave an iridology session with a much clearer sense of their overall health picture than they arrived with — and with specific, actionable guidance to take away.
What Can Iridology Reveal?
Iridology does not provide diagnoses, and Marijke is always clear about this distinction. What it can offer is a detailed constitutional picture — an overview of inherited tendencies, areas of the body that may be under stress, systems that appear robust, and patterns that may warrant closer attention.
Common areas that iridology assessment touches on include digestive function and bowel health, the nervous system and stress response, lymphatic congestion, circulatory patterns, and the condition of specific organs. For clients who arrive with longstanding but unexplained symptoms, iridology can sometimes provide a useful framework for understanding why certain systems may be struggling — and where to focus attention.
Marijke brings her background in naturopathy, herbal medicine, and nutrition to every iridology session. The findings from the iris examination do not exist in isolation — they are interpreted alongside your health history, your current symptoms, and your goals, producing recommendations that are genuinely tailored to you as an individual rather than a generic response to what the iris shows.
Who Is Iridology Suitable For?
Iridology is suitable for most adults who are curious about their constitutional health picture or who want a holistic overview of how their body is functioning. It is particularly useful for people who feel that something is not quite right but have not been able to identify a clear cause — those who experience persistent fatigue, digestive irregularity, skin issues, recurrent infections, or a general sense of imbalance that has not been fully explained by conventional investigation.
It is also a valuable starting point for anyone considering a broader programme of naturopathic support. Understanding your constitutional picture through iridology helps Marijke tailor any subsequent recommendations — whether that relates to diet, supplementation, herbal medicine, or colonic hydrotherapy — much more precisely to your individual needs.
Iridology is not suitable as a replacement for medical investigation where symptoms are acute, serious, or unexplained. If you have symptoms that have not been assessed by a doctor, Marijke will always advise you to seek medical evaluation alongside any complementary support.
Can Iridology Be Combined With a Colonic Session?
Marijke offers iridology as a standalone appointment, and many clients book it independently of colonic hydrotherapy. That said, the two therapies complement each other naturally — iridology provides a constitutional overview that can inform and contextualise what Marijke observes during a colonic session, and vice versa.
Clients who are new to Phenomenal Colonics sometimes find that beginning with an iridology session gives them a broader picture of their health before deciding which other treatments to pursue. Others return for iridology after a course of colonic sessions to assess whether the constitutional patterns observed originally have shifted. There is no obligation to combine the two — each stands entirely on its own merits.
Why Choose Marijke Vogel for Iridology in London?
Marijke brings a depth of training and experience to iridology that is relatively rare in London. She is a qualified naturopath, herbalist, and iridologist, ARCH-accredited and CNHC-registered, with over 25 years of practice behind her. Her approach to iridology draws on the detailed constitutional tradition of Dr Bernard Jensen — one of the most rigorous and methodologically developed schools of iridological practice — and integrates naturally with her broader naturopathic training.
Clients consistently describe Marijke’s sessions as unhurried, thorough, and genuinely illuminating. She takes the time to explain what she is seeing in plain language, to connect the iris findings to your individual health picture, and to leave you with clear, practical guidance rather than vague impressions.
The clinic is based at Balance On The Lane, 16 England’s Lane, Belsize Park, a short walk from Belsize Park and Hampstead tube stations.
Book an Iridology Session in London
If you are curious about what your eyes may reveal about your health, or if you are looking for a holistic starting point for a broader programme of naturopathic support, an iridology session with Marijke is a natural place to begin.
Book an iridology session at Phenomenal Colonics or contact Marijke directly by phone or WhatsApp to discuss whether the session is right for you. The clinic is at Balance On The Lane, 16 England’s Lane, Belsize Park, London NW3 4TG.
This content is for informational purposes only and does not constitute medical advice. Iridology is a complementary therapy and is not a substitute for medical diagnosis or treatment. Always consult your GP or a qualified healthcare professional if you have concerns about your health.
About the Author Marijke Vogel is an ARCH-accredited colon hydrotherapist and qualified naturopath, herbalist, and iridologist with over 25 years of clinical experience. She practises at Balance On The Lane, 16 England’s Lane, Belsize Park, London NW3 4TG. CNHC registration number: CNHC04200.
