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Mr Steven Harsum

MBBS, BSc, PhD, FRCOphth

Ophthalmologist

25 years of experience

London, SW19 5NX

(+4 more)

36 connections in healthcare

Skill endorsed

by Professor Amarjit Anand, Miss Shahrnaz Izadi and 6 other professionals

4.97

/5

(190 reviews)

25 years of experience

London, SW19 5NX

(+4 more)

36 connections in healthcare

Skill endorsed

by Professor Amarjit Anand, Miss Shahrnaz Izadi and 6 other professionals

Areas of expertise

All
Reviews
Skill Endorsements
Cataract Surgery
118
7
Cataracts
45
Vision Problems
17

Contact

Book


Expert in:

About Mr Steven Harsum

Mr. Steven Harsum is a highly skilled UK-trained ophthalmologist specialising in advanced eye surgery, with a practice based in Surrey. During his medical training, he was selected for the prestigious MBPhD program at University College London, combining accelerated medical studies with a second degree and a three-year research doctorate (PhD). His doctoral research focused on groundbreaking wound healing studies, sparking his passion for microsurgery.

Following his specialisation in Ophthalmology, Mr. Harsum trained at several leading hospitals in North and South London, culminating in a fellowship in medical and surgical retina at the world-renowned Moorfields Eye Hospital. His expertise encompasses procedures such as micro-incision cataract and vitreoretinal surgery, which he has introduced at Epsom & St. Helier Hospitals. He performs sutureless 25-gauge day-case vitrectomy, treating a variety of conditions including floaters, vitreous hemorrhage, diabetic retinal scarring, detached retinas, epiretinal membranes, and macular holes. His cataract surgeries employ sub-2mm micro-incision and femtosecond laser techniques, which are less traumatic, faster, and safer, often eliminating the need for injections or post-operative glasses. Remarkably, he is the first surgeon in the UK to combine laser cataract surgery with vitrectomy.

Mr. Harsum has been instrumental in advancing macular degeneration treatments at Epsom & St. Helier Hospitals, implementing efficient one-stop clinics and robust safety systems. As the clinical lead of the diabetic retinal screening service in Sutton & Merton, he has ensured high standards and regularly acts as an external quality assurance inspector for other UK eye units. Previously, he held leadership roles such as Clinical Lead, College Tutor, and Audit Lead at Epsom & St. Helier, focusing on enhancing patient care quality and training future ophthalmologists.

A dedicated educator, Mr. Harsum integrates modern technology, including surgical videos and advanced imaging, into his tutorials. His commitment to global health is evident in his charity work in countries like Guyana and Burma, where he has treated complex cases of cataracts, diabetic retinopathy, retinal detachments, and glaucoma, restoring sight to countless individuals.

Mr Harsum has expertise in the following areas:

  • Age-Related Macular Degeneration
  • Cataract / Complex Cataract Surgery
  • Macular oedema
  • Diabetic Retina
  • Retinal Surgery
  • Vitreous Surgery
  • Cataracts/ complex cataract surgery
  • Diabetic Retinopathy
  • Micro-incision Cataract surgery
  • Retinal Detachment
  • Vitreous surgery
  • Floaters
  • Medical retina
  • Retinal laser

Subspecialties

  • Refractive Surgery / Surgical Solutions
  • Glaucoma
  • Vitreoretinal Surgery
  • Vision Correction Surgery
  • Emergency Ophthalmology
  • Retina
  • Cataract Surgery

Areas of expertise

All
Reviews
(278)
Skill Endorsements
(17)

Click the bar to read reviews or skill endorsements

Cataract Surgery
118
7
Cataracts
45
Vision Problems
17
Blurred Vision
13
Complex Cataract Surgery
4
7
Age-Related Macular Degeneration (AMD)
10
Glaucoma
9
Macular Degeneration
8
Retinal Detachment
7
1
YAG Laser Capsulotomy
8
Astigmatism
5
Laser Eye Surgery
3
Eye Problems
3
Multifocal Intraocular Lens
3
Floaters (Eye)
3
Lens Replacement Surgery
3
Eye Test
2
Epiretinal Membrane
2
Branch Retinal Artery Occlusion (BRAO)
2
Eyelid Lumps and Bumps
2
Retinal Tear
2
Toric Lens Implants
2
Diplopia (Double Vision)
1
Retinal Imaging
1
Eye Problem
1
Squints
1
Minor Eyelid Procedures
1
Retinal Laser Surgery
1
Double Vision
1
Macular Hole
1
Refractive Lens Exchange
1
Presbyopia
Inherited Eye Diseases
Eyelid Cyst
Trabeculoplasty (SLT)
Colour Vision Deficiency
Minimally Invasive Glaucoma Surgery (MIGS)
iStent
Iridotomy
Corneal Disease
Cyclodiode
AB-interno Canaloplasty (ABiC)
Diabetic Macular Oedema
Eye Infection
Urgent Eye Care
New Eye Exam
Hyperopia (Farsightedness)
Eyelid Cyst (Chalazion) Surgery
Lazy Eye
Humphreys Visual Field
Myopia (Short-Sighted)
Uveitis (Inflammatory Eye Disease)
Retinal Vein Occlusion
Routine Eye Exam
Reduced Vision
Small Incision Lenticule Extraction (SMILE) Surgery
Refractive Cataract Surgery
Conjunctivitis (Pink Eye)
Complex Contact Lens Assessment
Dry Eyes
Macular Haemorrhage
Ocular Coherence Tomography (OCT)
Video Consultation
Diabetic Retinopathy
Intravitreal Injection
Vitreous Haemorrhage
Blepharitis
Trabeculectomy
Eyelid Cyst (Chalazion)
Glaucoma Surgeries

Registered with

General Medical Council

No. 4763770


Education

University of London

Medicine

Graduated 2001


Qualifications

Education:

  • BSc (Anatomy) - University College London - 1994
  • PhD (Wound Healing) - University College London - 1998
  • MBBS - University College London -2001

Languages spoken

  • English

Insurers

  • General and Medical
  • Bupa Fee Assured
  • The Exeter
  • Simply Health (Dental)
  • Healix Health Services
  • Freedom Health Insurance
  • Cigna
  • Saga Health Insurance
  • Bupa
  • WPA
  • Allianz Worldwide Care
  • AXA Health
  • Aviva Health
  • Vitality
  • The PHC
  • Benenden Health
  • Aetna
  • National Friendly
  • Self-pay only

Fees

  • New appointment

    £300
  • Follow-up appointment

    £200
*May vary on location

Locations

Nuffield Health Parkside Hospital

53 Parkside Wimbledon, London, United Kingdom, SW19 5NX

4.81(1254 reviews)

Opening hours

Monday
13:00 - 17:00
Tuesday
Wednesday
08:00 - 12:00
Thursday
Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
Free Parking
View practice profile

Opening hours

Monday
13:00 - 17:00
Tuesday
Wednesday
08:00 - 12:00
Thursday
Friday
Saturday
Sunday

Facilities

Wheelchair Accessible
Free Parking
View practice profile

Spire St Anthony's Hospital

London Road, North Cheam, Sutton, United Kingdom, SM3 9DW

4.87(1140 reviews)

Opening hours

Monday
08:00 - 12:00
Tuesday
Wednesday
Thursday
Friday
Saturday
Sunday

Facilities

Free Parking
View practice profile

Ashtead Hospital

The Warren Ashtead, Ashtead, Surrey, United Kingdom, KT21 2SB

4.84(454 reviews)

Opening hours

Monday
Tuesday
08:00 - 17:00
Wednesday
Thursday
Friday
Saturday
Sunday

Facilities

Free Parking
View practice profile

SEON Vision

140 London Road, Kingston Upon Thames, United Kingdom, KT2 6QL

0.00(0 reviews)

Opening hours

Monday
Tuesday
Wednesday
13:00 - 17:00
Thursday
Friday
Saturday
Sunday

Epsom General Hospital - The Northey Suite

Epsom Hospital Dorking Road, Epsom, United Kingdom, KT18 7EG

0.00(0 reviews)

Opening hours

Monday
Tuesday
Wednesday
Thursday
07:30 - 18:45
Friday
Saturday
Sunday

Areas of expertise

All
Reviews
Skill Endorsements
Cataract Surgery
118
7
Cataracts
45
Vision Problems
17

Contact

Book

Reviews

AI Review Summary

This summary was created by AI based on recent reviews

Mr Steven Harsum is professional, reassuring, and clear in patient interactions. He performs skilled cataract surgery, giving clear procedural explanations that ease patient anxiety; patients find operations quick and painless. Mr Harsum offers expertise in conditions like retinal detachment, vitrectomy, and laser treatment for glaucoma, providing comprehensive advice. Patients achieve excellent visual outcomes, leading to renewed confidence and an enhanced quality of life.

5
verified patient
11 Jun 2026

The use of drops and a temporary lens was completely comfortable.

Patient seen for:
5
verified patient
11 Jun 2026

I found Mr Harsum to be very pleasant and very clear and honest in his explanations and advice. I already knew him to be an experienced and skilled eye surgeon and my visit and surgery went very smoothly and with an excellent result.

Patient seen for:
5
verified patient
01 Jun 2026

The service and information was very reassuring considering the delicate operation to the eyes

5
verified patient
01 Jun 2026

As always, it was a pleasure being seen by Mr Harsum for my check-up. His pleasant and reassuring manner cannot be beaten.

Patient seen for:
5
verified patient
28 May 2026

I was extremely pleased with the care I received for the treatment of my cataracts in both eyes. Mr Harsum made one feel at ease and comfortable and explained everything about the procedure with clarity and what options were available for the replacement lens. The procedure was amazingly quick and no discomfort was felt during or after the procedure.

Patient seen for:
5
verified patient
22 May 2026

Thank you Doctor for treating my eye. Very prompt, professional in explaining the details. Excellent service and check-ups, follow-ups done by the surgery team.

Patient seen for:
5
verified patient
21 May 2026

I would highly recommend Mr. Steve Harsum to anyone needing expert eye care. Mr. Harsum first saw me in March 2013 for a retinal detachment. His prompt diagnosis, clear explanation of the situation, and skilled surgical intervention were outstanding. The procedure was handled with great professionalism. In September 2020, when I developed Age-related Macular Degeneration (AMD) in my other eye, Mr. Harsum again took over my care. He started my treatment promptly and has continued to manage it ever since. His calm, reassuring manner and willingness to answer all my questions have made what could have been a very worrying condition much easier to deal with. I have complete confidence in Mr. Harsum and have

5
verified patient
20 May 2026

On 14th February 2025,1 underwent bilateral cataract surgery, elsewhere, with Toric multifocal lenses. I recently had my optometrist independently review my eyesight ,with both reading and distance and astigmatism correction. It was not possible to achieve the standard of eyesight possible at end '24. I identified Mr Steven Harsum as an independent eye surgeon, August '25 and on 4th February '26, in agreement with myself, a replacement lens Op was undertaken. but it was not possible to separate the Toric lens from the capsule, without incurring considerable risk / further operations. The Op was stopped after over 1 hour. My original standard of poor eyesight was restored. The lessons to be learnt for patients undergoing Cataract procedures, should be able to check their skills / experience for compatibility of multifocal lenses, for the patient, on the same day. Also, the surgery used the biometer topography rather than the more accurate Pentacam measurements.

5
verified patient
20 May 2026

All was explained very well, and the operation that I had in both eyes at different times, went well with minimal of discomfort, thank you all involved, and I would recommend the service to those who would ask

Patient seen for:
5
verified patient
20 May 2026

Dr Harsum was absolutely amazing. I am truly grateful for the exceptional care and support I received. His quick and accurate diagnosis of my detached retina made all the difference , without his prompt action, I could have been facing a long‑term and serious condition. The laser surgery was arranged very quickly, and the whole procedure took only a few minutes, which brought me great reassurance during a worrying time. I cannot thank Dr Harsum enough for his kindness, professionalism, and expertise. I highly recommend him.

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Skill Endorsements

Mr Harsum is an expert in his field. He provides the highest level of care for his patients. He is skilled, friendly and communicates clearly. I would recommend him to friends and family without hesitation.

31 Jul 2025
Endorsed for
Cataract Surgery
Complex Cataract Surgery

Professor Amarjit Anand

Professor Amarjit Anand

Orthopaedic Surgeon
Is a colleague

19 Jul 2025
Endorsed for
Cataract Surgery
Complex Cataract Surgery

Miss Shahrnaz Izadi

Miss Shahrnaz Izadi

Ophthalmologist
Is a colleague

Very friendly and capable Eye Surgeon. I trust and value his opinion.

09 Jul 2025
Endorsed for
Cataract Surgery
Complex Cataract Surgery

Mr Ashraf Raja

Mr Ashraf Raja

General Surgeon
Is a colleague

Steve is an excellent colleague and we cross cover for each other during periods of leave

22 Jan 2025
Endorsed for
Cataract Surgery
Complex Cataract Surgery

Mr Edward Lee

Mr Edward Lee

Ophthalmologist
Is a colleague

FAQ

What are Mr Steven Harsum's reviews like?

Mr Steven Harsum's overall patient rating is 4.97 out of 5 stars on Doctify. This is based on 190 reviews.

What languages does Mr Steven Harsum speak?

Mr Steven Harsum speaks English

Where is Mr Steven Harsum located?

Mr Steven Harsum primarily practices at Nuffield Health Parkside Hospital, located at 53 Parkside Wimbledon, London, United Kingdom, SW19 5NX
See more locations

What are Mr Steven Harsum working hours?

Mr Steven Harsum is working Monday (13:00 - 17:00, 08:00 - 12:00), Tuesday (08:00 - 17:00), Wednesday (08:00 - 12:00, 13:00 - 17:00), Thursday (07:30 - 18:45)

Find where Mr Steven Harsum operates today

Does Mr Steven Harsum accept new patients?

Mr Steven Harsum generally accepts new patients.

Get in touch with this specialist to enquire as a new patient