Mr Johannes Keller



GMC number: 6058148

Practicing since: 2001



Consultation times

  • Thursday evening
  • Overview

Or call us on

0117 906 4870


Mr Johan Keller is a Consultant Eye Surgeon specialising in retinal diseases and cataract surgery. He looks after patients with vascular and degenerative retinal diseases, and carries out over 250 retinal operations yearly. He also operates on over 350 patients with cataracts each year, and leads the theatre cataract productivity group for the NHS hospital. 

Mr Keller has a special interest in patient safety and quality assurance and is the clinical governance officer for the Bristol Eye Hospital. Besides the complexities and technical aspects of eye disease, he places special emphasis on a warm bedside manner, and good communication with patients and relatives.

He has worked in all areas of ophthalmology since 2004, developing a solid base of knowledge and skills. He underwent the prestigious Sydney Eye Hospital and Bristol Eye Hospital training fellowships in vitreo-retinal surgery. He trained in general ophthalmology in the Midlands, the South of England and Barcelona, Spain, with further short stays in Lausanne, Switzerland and the Aravind Eye Care System in Madurai, India. Within the Eye Hospital, Mr Keller trains two senior surgeons each year who go on to become consultants in their own right.

Special interests

  • Retinal diseases and vitreous surgery
  • Macular surgery
  • Bespoke cataract surgery
  • Complications of lens surgery
  • Complex lens surgery

Other interests

  • Patient safety
  • Quality of care
  • Clinical productivity and lean management

Languages spoken

English, French, Spanish

Treatments and tests offered by Mr Johannes Keller at Nuffield Health

  • Phacoemulsification
  • Vitrectomy
  • Cataract Surgery

Locations Mr Johannes Keller works with

Related experience


Mr Keller is interested in clinical epidemiology: the way retinal diseases occur in the population and how medical services can be better organised to deliver the best clinical care, including on how to improve the training of doctors. He also works in understanding the mechanisms whereby diseases of the vision organs propagate along vision nerve tissues.

He has published 15 papers in peer-reviewed journals.


  • Royal College of Ophthalmologists
  • Britain and Eire Association of Vitreo-Retinal Surgeons
  • European Society of Retinal Specialists - Euretina
  • European Society of Cataract and Refractive Surgeons
  • American Society of Retinal Surgeons

Other post held

  • Bristol Eye Hospital
  • University Hospitals Bristol NHS Foundation Trust

Insurers Mr Johannes Keller works with

Mr Johannes Keller works with the following private medical insurance providers:

  • Allianz
  • Aviva Health
  • Bupa
  • Simplyhealth
  • Vitality Health (Pru Health)
  • WPA


Mr Johannes Keller does not hold a share or financial interest in this hospital, another Nuffield Health hospital or the company.

Mr Johannes Keller does not have a share or financial interest in equipment used at this hospital or another Nuffield Health hospital.

Mr Johannes Keller does not hold any paid advisory role(s) at this hospital or on behalf of Nuffield Health.