Why Blue Fin Vision® Performs an OCT Scan Before Every YAG Capsulotomy – And Why We Never Charge for It
- Posted
- Medically Reviewed by: Mr Mfazo Hove, Consultant Ophthalmic Surgeon
- Author: Mr Mfazo Hove
- Published: November 24, 2025
- Last Updated: September 24, 2026
TL;DR: Before every YAG laser capsulotomy, Blue Fin Vision® includes a macular OCT scan within the paid, consultant-led assessment at no separate charge. The scan can identify macular conditions that may mimic posterior capsule opacification or limit the expected benefit of laser treatment, while a full examination checks areas outside the scan.
Why an OCT Scan Matters Before YAG Laser Capsulotomy
At Blue Fin Vision®, every patient attending for YAG laser capsulotomy undergoes a macular optical coherence tomography (OCT) scan before any laser treatment. An OCT scan provides detailed, cross-sectional images of the central retina.
The scan is performed routinely for every patient, including external referrals. It is included within the paid YAG assessment and is never charged separately.
Blue Fin Vision® regards macular OCT as part of the diagnostic pathway rather than an optional add-on.
Blurred Vision After Cataract Surgery Is Not Always Caused by PCO
Posterior capsule opacification (PCO) is the most common long-term cause of recurrent visual deterioration after otherwise successful cataract surgery. However, other conditions can produce similar symptoms.¹
A macular OCT scan is particularly useful for detecting:
- Cystoid macular oedema, which is swelling in the central retina² ³
- Epiretinal membrane, a thin layer of scar-like tissue on the retinal surface⁵ ⁶
- Age-related macular degeneration, a condition affecting central vision⁵
- Vitreomacular traction, where the vitreous gel pulls on the central retina⁵
- Macular fluid associated with retinal vascular disease, meaning conditions affecting the retinal blood vessels⁵
- Macular involvement from a retinal detachment, where the retina separates from the tissue beneath it, if the affected area crosses the scan⁵
Macular OCT does not reliably screen for peripheral retinal tears or detachments outside the central scanned area. It also does not replace the specific examinations needed to assess glaucoma, corneal disease or optic neuropathy, which is damage to the optic nerve.⁵
These conditions require clinical examination and, where indicated, a dilated fundus assessment. This involves using dilating drops to examine the retina at the back of the eye.
How the OCT Scan Fits into the Diagnostic Pathway
PCO is diagnosed primarily through the patient’s history, visual assessment and slit-lamp examination. A slit lamp is a specialised microscope used to examine the posterior capsule, the thin membrane behind the artificial lens.¹
Macular OCT acts as an additional safeguard. It helps identify macular disease that may be contributing to the symptoms or limiting the expected benefit of laser treatment.⁵
The OCT findings are interpreted alongside visual testing and a full clinical examination. Together, these checks help determine whether posterior capsule opacification is the likely cause of the visual deterioration.
YAG laser capsulotomy carries small but real risks, including retinal complications. Treating the correct cause therefore matters.⁴
An OCT Scan That Changed the Diagnosis
A patient recently attended with symptoms consistent with PCO.
The macular OCT scan showed subretinal fluid, meaning fluid beneath the retina, and retinal elevation within the scanned area. These findings indicated a retinal detachment that had reached the posterior pole, the central area at the back of the eye.
The OCT scan enabled the diagnosis to be recognised immediately. The planned YAG laser capsulotomy was cancelled, and urgent vitreoretinal care, specialist treatment for conditions affecting the vitreous gel and retina, was arranged.
Without that additional imaging, there was a risk that diagnosis and definitive treatment could have been delayed.
This example illustrates the value of the protocol. It does not mean that a macular OCT scan can detect every retinal detachment.
When an OCT Scan Finds Macular Oedema
Where the OCT scan identifies macular oedema, meaning swelling in the central retina, Blue Fin Vision® can investigate the cause promptly.
Where clinically appropriate, treatment may be available without an unnecessary additional referral. Same-day intravitreal injection is available at the Harley Street clinic. An intravitreal injection delivers medication into the vitreous gel inside the eye.
Patients seen at other locations who require intravitreal therapy will need to attend Harley Street for that treatment.
Why the OCT Scan Has No Separate Charge
Blue Fin Vision® regards macular OCT as part of the diagnostic pathway rather than an optional add-on.
Its cost is included within the paid YAG assessment and is never charged separately. This keeps the focus on thorough clinical judgement rather than itemised extras.
Why Clinical Interpretation Matters
Blue Fin Vision® performs a macular OCT scan before every YAG laser capsulotomy to identify macular conditions that may be contributing to the patient’s symptoms.
The scan can help prevent unnecessary laser treatment when macular disease is the dominant problem. It can also support prompt escalation or management where clinically appropriate.
The clinical value of OCT depends on interpreting the images alongside a full ophthalmic examination, meaning a complete assessment of the eyes. This combined approach helps the clinician recognise when a patient does not need YAG laser capsulotomy.
Discuss YAG Laser Capsulotomy with Blue Fin Vision®
Book a paid, consultant-led YAG laser capsulotomy assessment with Blue Fin Vision® in London, Hertfordshire or Essex.
Your macular OCT scan is included within the assessment at no separate charge.
References
- Donachie PHJ, Barnes BL, Olaitan M, Sparrow JM, Buchan JC. The Royal College of Ophthalmologists’ National Ophthalmology Database study of cataract surgery: report 9, risk factors for posterior capsule opacification. Eye (Lond). 2023;37(8):1633-1639.
- Chu CJ, Johnston RL, Buscombe C, Sallam AB, Mohamed Q, Yang YC. Risk factors and incidence of macular edema after cataract surgery: a database study of 81 984 eyes. Ophthalmology. 2016;123(2):316-323.
- Han JV, Patel DV, Squirrell D, McGhee CNJ. Cystoid macular oedema following cataract surgery: a review. Clin Exp Ophthalmol. 2019;47(3):346-356.
- Javitt JC, Tielsch JM, Canner JK, Kolb MM, Sommer A, Steinberg EP; Cataract Patient Outcomes Research Team. National outcomes of cataract extraction. Increased risk of retinal complications associated with Nd:YAG laser capsulotomy. Ophthalmology. 1992;99(10):1487-1498.
- Langlo CS, Amin A, Park SS. Optical coherence tomography retinal imaging: narrative review of technological advancements and clinical applications. Ann Transl Med. 2025;13(2):17.
- The Royal College of Ophthalmologists. Idiopathic epiretinal membranes: concise practice points [Internet]. London: The Royal College of Ophthalmologists; 2023 [cited 2026 Sep 13]. Available from: https://www.rcophth.ac.uk/wp-content/uploads/2023/07/CPPs-ERM.pdf
ABOUT THE AUTHOR
Mr Mfazo Hove
Consultant Ophthalmic Surgeon
MBChB MD FRCOphth CertLRS
Mr Mfazo Hove is a Consultant Ophthalmic Surgeon with experience spanning more than 57,000 procedures. He completed 6.5 years of specialist training at Moorfields Eye Hospital and served for five years as a consultant at the Western Eye Hospital, Imperial College Healthcare NHS Trust. He is the founder of Blue Fin Vision®, a consultant-led private ophthalmology practice operating across London, Essex, and Hertfordshire. His clinical expertise encompasses advanced cataract surgery, refractive lens replacement, laser vision correction, and implantable Collamer lenses (ICL).
A ZEISS Key Opinion Leader, Mr Hove is a respected international speaker with five invited engagements across seven cities in 2026:
- ZEISS China tour (Changsha, Shanghai, and Hangzhou, April – ZEISS APAC User Meeting)
- RCOphth Annual Congress – May – Manchester
- ZEISS EMEA User Meeting (Istanbul)
- ZEISS Lausanne User Meeting (Lausanne)
- European Society of Cataract and Refractive Surgeons Annual Congress (ESCRS, London)
