What you need to know about glaucoma

Learn more about glaucoma and your treatment options
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Glaucoma explained

In these toggles we explain what you need to know about glaucoma

Glaucoma is a condition that causes the pressure inside the eye to be too high. If left untreated, this excessive pressure can damage the nerve that carries the vision to the brain; in severe cases, this can lead to blindness.

There are many types of glaucoma. The two main types are open-angle glaucoma, also known as chronic glaucoma, and narrow-angle or angle-closure glaucoma. Most of the time, when people talk of glaucoma, they are referring to open-angle type. Chronic glaucoma is described as the silent thief of sight because the loss of vision is painless.

Narrow-angle glaucoma can have no symptoms but can progress to angle closure. In angle-closure glaucoma, which is much less common, patients complain of seeing halos around lights and a dull eye ache. This may progress to severe eye pain, redness and blurring of vision associated with nausea and vomiting. Without treatment, glaucoma initially results in loss of peripheral field of vision, then tunnel vision and eventually irreversible sight loss.

There is a higher risk of having an earlier onset and more severe glaucoma if you are:

  • Of Black African origin;
  • Have a close relative with glaucoma;
  • Short-sighted;
  • Diabetic;
  • Have high eye pressure.

The earliest damage is detected using a laser measuring system called OCT (Optical Coherence Tomography). The OCT measures the thickness of the layer of nerve fibres that carry the vision to the optic nerve.

This allows us to diagnose and treat glaucoma far earlier than was previously possible.

Glaucoma is a condition that requires very precise monitoring. Here at My-iClinic, we provide expert glaucoma treatment that keeps the condition in check and prevents your vision from damage.

Not only do our glaucoma patients receive regular eye pressure and visual field checks, we also monitor their optic nerve and retinal connecting cells regularly too. If the patient’s eye pressure is not stable, they will need to attend frequent appointments.

Some clinics charge you for each visit, so the costs can be unpredictable and may inadvertently penalise someone with unstable glaucoma. Here at My-iClinic, you pay for a whole year of glaucoma treatment, so you won’t have to pay extra if you’re visiting us more frequently.

We typically treat your glaucoma solely with drops. The drops work by lowering the pressure to the target pressure for the defective eye. Your target pressure is unique to you and can be different for each eye. We will help to lower the pressure to a point where damage can no longer occur.

If drops fail to achieve the target pressure, we may consider surgery. The surgery involves passing a very fine fibre around the drainage canal and tying it so that the canal drains more effectively.

This operation is called a canaloplasty and can be done from inside or outside the eye. There are also less invasive procedures that can be appropriate for some patients, and we can discuss these if they are relevant to your case.

Increasingly, we offer surgery as the first line of treatment for glaucoma, with drops administered afterwards if necessary.

My-iClinic is financially accessible to anyone who wants the best available treatment


Which best describes you?


“I can only see clearly when I wear my glasses or contact lenses”

woman with glasses
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“I find that I have to use my reading glasses more and more”

man reading with glasses
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“I can’t see as well as I used to, I think there may be a problem…”

women hugging
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Here’s what Londoners say after eye treatment

We are proud to hear we make a meaningful difference to your life

Mr Bolger suggested having cataract surgery on both eyes on the same day and whilst I had concerns, I decided to go ahead. The day after I was able to remove the eye pads and I had perfect vision. I have told many people that it was the best thing I have ever spent my money on. I have needed spectacles or contact lenses since I was 9 years old and now have 20/20 vision with no assistance from spectacles. I would highly recommend the My-iClinic.

Mrs Penelope Carrozza

Double cataract removal in September 2018. The total experience from initial consultation to operation was most efficient. The result so far has been exactly as described in the brochure, I've never seen so well. I had glasses from just over 1 year old till now, (80+), what a difference!

Michael Turvey

Just discharged after having monovision cataract surgery in both eyes I am delighted with the outcome. I can see both near and far and have been able to dispense with my contact lenses and glasses. I have been well looked after from my first contact. Mr Bolger was very professional and reassuring and I felt at all times that I was in good hands. I cannot fault the whole experience including the charges, which having researched various alternatives, proved to be very reasonable.

Anne Collins
james w

I had high confidence in the team working at My-iClinic due to their attentive and thorough end-to-end service, from the reception desk to the operation theatre. I have recommended the practice already to multiple friends, family members and colleagues. (And my eyesight is better than I even hoped for!)

Ames Ward

Absolutely fantastic. I was very nervous having my laser treatment for narrow angle glaucoma. The Consultant was wonderful, caring and very understanding. She talked me through the procedure and was extremely patient. Definitely recommend My-iClinic.



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Articles and videos to help you understand your eyes better

Learn more about the conditions we treat
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Links to more information about eye conditions…

Educate yourself further by reading the links below

The NHS has provided an excellent overview of glaucoma, including causes, tests, and treatments. Click here for more information.

The National Eye Institute provides a walkthrough of a cataract condition with examples of what your vision may look like, as well as treatment options. Click here for more information.

The National Eye Institute provides a great amount of information regarding macular degeneration. Click here for more information.

For the NHS guide to long-sightedness, click here.

For the NHS guide to short-sightedness, click here.

About the experts

Meet the My-iClinic founders, Mr John Bolger and Ms Bola Odufuwa. Two consultant eye surgeons who made it their life goal to make your life better.


Bola Odufuwa

Consultant Ophthalmologist
Clinic Director

Bola Odufuwa is a consultant ophthalmologist at The Royal Free Hospital and My-iClinic. Her specialities include cataract, glaucoma, paediatric, and laser refractive surgery. Bola has had extensive training at Moorfields Eye Hospital, London, where she gained expertise in the management of various eye conditions.

Bola Odufuwa’s special interests include optimal refractive outcomes following cataract surgery, non-penetrating glaucoma surgery, and assessment eyesight in children with special needs: particularly dyslexia and autism.


Mr John Bolger

Consultant Ophthalmologist
Clinic Director

John Bolger is a Consultant Ophthalmologist and Clinic Director at My-iClinic. His specialities include ophthalmology, laser refractive surgery (SMILE, Presbyond, LASIK, PRK, PTK), refractive lens exchange (RLE), cataract surgery, glaucoma treatment and macular degeneration.

Over the course of his career, John Bolger has carried out over 35,000 cataract operations, 20 of which were for eye surgeons. He has also taught over 1500 young ophthalmologists worldwide as they begin their surgical careers.

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