The History of Cataract Surgery: From Ancient Techniques to Modern Phacoemulsification
Cataract surgery has changed dramatically from ancient procedures that displaced your cloudy lens to modern operations that remove it and usually replace it with an artificial intraocular lens. Its history reflects centuries of changes in surgical technique, instruments, infection control and understanding of how your eye focuses light.
Today, if you undergo cataract surgery in the UK, your cloudy natural lens will usually be removed through a small incision and replaced with an intraocular lens. Looking at how these techniques developed shows how your modern treatment differs from the much less predictable procedures used in the past.
How Far Back Does Cataract Surgery Go?
Attempts to treat cataracts extend back into antiquity. Historical texts describe procedures designed to move an opaque lens or lens material away from your visual axis so that more light could enter your eye.
The precise origins of cataract surgery are difficult to establish because surviving ancient descriptions are open to interpretation. You should therefore view exact claims about who performed the world’s first cataract operation or the precise date it began with caution.
What Was Cataract Couching?
Couching involved introducing an instrument into your eye and displacing the opaque lens away from your pupil. If the procedure succeeded, more light could reach your retina, but your eye was left without the normal focusing power of its natural lens.
Your vision could therefore improve without becoming normal, and the procedure carried substantial risks including inflammation, glaucoma, infection and damage to structures inside your eye.
The Contribution of Ancient Indian Surgery
The Sushruta Samhita contains one of the most important surviving ancient descriptions associated with cataract treatment. It describes an eye procedure involving a pointed instrument and manipulation of material obstructing vision.
You should be cautious about describing this technique as identical to modern lens extraction. Historians have interpreted the account differently, including as couching or a technique that may sometimes have expelled lens material, so its exact relationship to later cataract extraction remains debated.
Why Was Couching So Limited?
Couching moved your cloudy lens rather than replacing it with a clear lens implant. Even when the optical pathway improved, your eye was left aphakic and therefore lost much of its natural focusing power.
Your outcome was also threatened by complications including inflammation, glaucoma, infection and damage to internal eye structures. These limitations made your visual result much less predictable than with modern cataract surgery.
Limitations of Couching
| Issue | What It Meant for Your Eye | Possible Consequence |
| Your cataract remained inside your eye | Your cloudy lens was displaced rather than replaced | Your visual improvement could be limited |
| Your focusing lens was lost from the visual axis | Your eye became functionally aphakic | Your vision remained highly out of focus without strong optical correction |
| Your procedure entered the eye without modern microsurgical control | Your internal tissues could be injured | Your sight could deteriorate despite initial improvement |
| Your eye could become inflamed | Your internal tissues could react after manipulation | You could develop pain and further visual loss |
| Your eye pressure could rise | Your drainage system could be affected | You could develop secondary glaucoma |
| Your eye could become infected | Your procedure predated modern infection-control methods | Your infection could cause severe visual loss |
Cataract Surgery in the Middle Ages
Variations of couching continued for centuries in different regions because your surgeon had few effective alternatives for physically treating an opaque lens.
Techniques, instruments and medical knowledge changed over time, but removing your cataract reliably did not become established until later developments in lens extraction.
Jacques Daviel and Cataract Extraction
Jacques Daviel was central to the development of deliberate cataract extraction during the eighteenth century. In 1747, he removed lens material after an attempted couching procedure did not proceed as planned.
More recent historical research distinguishes this event from Daviel’s later planned primary cataract extractions. Your historical account is therefore more accurate if you describe Daviel as establishing planned extracapsular extraction around 1750 and presenting his method publicly in 1752 rather than simply calling the 1747 operation the first modern cataract extraction.
What Was Extracapsular Cataract Extraction?
Extracapsular cataract extraction removes your opaque lens material while leaving part of your lens capsule inside your eye. This differs fundamentally from couching because your cataract is actually removed from the visual pathway.
The technique evolved considerably after Daviel’s era. Later improvements in anaesthesia, infection control, instruments, suturing and intraocular lenses made extracapsular surgery far safer and more predictable for you than its eighteenth-century predecessors.
The Development of Intracapsular Surgery
Intracapsular cataract extraction removes your natural lens together with its surrounding capsule. Different forms developed over time, and the technique became widely used during the twentieth century before modern extracapsular and phacoemulsification surgery became dominant in many healthcare systems.
Because your complete capsule was removed, positioning a modern posterior-chamber lens was more difficult and your operation required a relatively large incision. Later techniques preserved the posterior capsule and provided better support for your intraocular lens.
Why Was Your Vision Still Difficult After Early Cataract Surgery?
Removing your cataract also removes your eye’s natural focusing lens. Before reliable intraocular lenses became available, you generally needed powerful aphakic spectacles or, later, contact lenses to restore focus.
Your thick aphakic spectacles could cause magnification, distortion and a restricted field of view. Cataract extraction therefore did not provide the type of optical rehabilitation you can receive from an intraocular lens today.
The First Intraocular Lens
Harold Ridley performed the first widely recognised intraocular lens implantation at St Thomas’ Hospital in London on 29 November 1949. Your implanted lens was made from polymethyl methacrylate, or PMMA, and represented a major change in how your focusing power could be restored after cataract removal.
Ridley’s early lenses were very different from the intraocular lens you may receive today and initially caused technical difficulties and professional controversy. Your modern lens has benefited from decades of improvements in materials, design, positioning and power calculation.
Why Were Intraocular Lenses Revolutionary?
An intraocular lens restored much of the focusing power lost when your natural lens was removed. This reduced your need for the extremely powerful aphakic spectacles previously required after cataract extraction.
Over subsequent decades, improvements in lens materials, fixation and power calculation made implantation increasingly predictable. Your artificial lens is now planned using detailed measurements taken before your cataract operation.
Charles Kelman and Phacoemulsification
American ophthalmologist Charles Kelman published his preliminary report of phacoemulsification in 1967. His technique used an ultrasonically vibrating instrument to break up and aspirate your cataract through a smaller incision than the large wounds required for conventional extracapsular extraction.
The technique initially required unfamiliar equipment and substantial new surgical skills. Your modern phacoemulsification procedure is the result of many later developments in fluidics, ultrasound delivery, surgical instruments and foldable intraocular lenses.
Why Was Phacoemulsification Important?
Phacoemulsification allowed your lens nucleus to be fragmented inside your eye and removed through a smaller opening. Later improvements made progressively smaller incisions possible and allowed foldable intraocular lenses to be inserted without enlarging the wound substantially.
These developments can support faster wound healing and less surgically induced astigmatism than older large-incision procedures. Your result still depends on your eye, cataract complexity and surgical technique.
Was Phacoemulsification Immediately Accepted?
No. Kelman’s technique initially faced resistance because your surgeon needed specialised equipment and had to learn a substantially different surgical method.
As the equipment, technique and intraocular lenses improved, phacoemulsification became the predominant approach in the UK and many other high-resource healthcare systems. You should not describe it as the only modern worldwide technique because manual small-incision cataract surgery remains widely used internationally.
The Development of Smaller Incisions
Modern phacoemulsification and foldable intraocular lenses allow your operation to be completed through considerably smaller incisions than historical extraction techniques.
- Your smaller wound: Your main incision is often small enough to seal without routine sutures.
- Your recovery: Your smaller incision generally produces less wound-related disruption than historical large-incision surgery.
- Your astigmatism: Your smaller wound can reduce surgically induced changes to your corneal shape.
- Your lens implantation: Your foldable intraocular lens can pass through a small incision before opening inside your eye.
Your small incision does not make cataract surgery risk-free. Your surgeon should still explain complications including infection, inflammation, retinal problems and rupture of your lens capsule before your operation.
How Modern Intraocular Lenses Evolved
Your modern intraocular lens can be selected according to measurements of your eye and your visual priorities. Depending on your circumstances, your options may include a monofocal lens, a toric lens for astigmatism or a lens designed to provide a wider range of focus.
No lens design can guarantee that you will never need glasses. Your surgeon should explain the expected range of vision and possible optical side effects before you choose a lens.
Modern Phacoemulsification
During your modern phacoemulsification procedure, your surgeon makes a small incision, opens the front of your lens capsule and uses ultrasound with irrigation and aspiration to remove your cloudy lens material. Your artificial intraocular lens is then normally placed within the remaining capsular bag.
Phacoemulsification is the predominant technique in current UK cataract practice, but other established approaches, particularly manual small-incision cataract surgery, continue to play an important role internationally.
Femtosecond Laser-Assisted Cataract Surgery
The first reported femtosecond laser-assisted cataract procedure in a human eye was performed in Budapest in 2008. Your femtosecond laser can automate selected surgical steps such as creating the capsulotomy and fragmenting your lens.
The laser does not perform your entire cataract operation independently. Your surgeon still needs to remove the fragmented lens material, implant your intraocular lens and manage important clinical decisions or complications.
Is Laser Cataract Surgery Better Than Conventional Phacoemulsification?
Femtosecond laser-assisted cataract surgery can perform selected steps with high reproducibility, but major clinical trials have not demonstrated consistently better final vision than conventional phacoemulsification.
Your choice should therefore not be based on an assumption that using a laser automatically gives you a safer or more accurate visual result. Your eye condition, surgeon’s experience, available technology and evidence for the proposed technique remain more important.
UK Guidance Note
Current NICE guidance does not describe femtosecond laser-assisted cataract surgery as a superior replacement for conventional phacoemulsification. Its published recommendation states that femtosecond laser-assisted cataract surgery should be used as part of a randomised controlled trial that collects resource-use data.
You should therefore avoid presenting laser cataract surgery as the more advanced or preferable option for your treatment simply because a laser is involved. Modern conventional phacoemulsification remains an established cataract operation.
Myth vs Fact
| Myth | What You Should Know |
| Your modern cataract surgery developed from one single invention. | Your current treatment is the result of centuries of advances in lens extraction, infection control, surgical instruments, intraocular lenses and phacoemulsification. |
| Ancient cataract couching removed your cataract. | Your cloudy lens was displaced away from your visual axis rather than removed and replaced. |
| Your vision always remained completely useless after couching. | Your sight could sometimes improve, but your visual result was unpredictable and your risk of serious complications was high. |
| Sushruta definitely performed the same cataract extraction you receive today. | Your interpretation of the ancient description should remain cautious because historians disagree about the exact technique used. |
| Jacques Daviel invented cataract surgery in 1747. | Your cataract treatment existed much earlier, but Daviel helped establish deliberate lens extraction during the eighteenth century. |
| Your cataract surgery immediately restored normal focusing after the lens was removed. | Before intraocular lenses, your eye lost much of its focusing power and you often needed very strong spectacles. |
| Harold Ridley’s first intraocular lens was identical to the lens you receive today. | Your modern IOL developed through decades of improvements in materials, design, positioning and power calculation after Ridley’s first implantation in 1949. |
| Charles Kelman’s phacoemulsification was immediately accepted by surgeons. | Your modern phaco technique developed gradually because early systems required unfamiliar equipment and substantial new surgical skills. |
| Your femtosecond laser performs the whole cataract operation automatically. | Your laser can automate selected steps, but your surgeon still performs and controls important parts of your procedure. |
| Laser cataract surgery always gives you better vision than conventional phacoemulsification. | Your final visual outcome has not consistently been shown to be better with femtosecond laser-assisted surgery than with modern conventional phacoemulsification. |
Key Takeaways
- Your earliest cataract treatments attempted to move the cloudy lens away from your line of sight rather than replace it.
- Your vision after ancient couching could improve, but serious complications and poor visual outcomes were common.
- Your understanding of Sushruta’s cataract technique should recognise that historians disagree about exactly how the ancient description should be interpreted.
- Your modern extraction techniques developed gradually rather than through one single invention.
- Jacques Daviel helped establish planned cataract extraction during the eighteenth century.
- Harold Ridley performed the first intraocular lens implantation in 1949.
- Charles Kelman published his first phacoemulsification technique in 1967.
- Your modern phacoemulsification procedure combines small-incision lens removal with an artificial intraocular lens.
- Your femtosecond laser can automate selected surgical steps but has not consistently produced better final vision than conventional phacoemulsification.
- Your safest and most suitable cataract technique depends on your eye, your surgeon and the clinical setting.
Frequently Asked Questions
- How old is cataract surgery?
Your history of cataract treatment extends back into antiquity, although the exact place and date of the first operation remain uncertain. Ancient techniques were very different from the cataract surgery you can receive today. - What was cataract couching?
Your cloudy lens was displaced away from your visual axis using an instrument inserted into your eye. Your sight might improve, but your eye remained without normal lens focusing power and faced substantial risks from complications. - What did Sushruta contribute to cataract surgery?
Ancient writings associated with Sushruta contain an important early description of an operation for cataract-like visual loss. Your interpretation should remain cautious because historians disagree about whether the technique represents couching, partial extraction or another form of lens manipulation. - What did Jacques Daviel contribute to cataract surgery?
Daviel helped establish deliberate lens extraction during the eighteenth century. Your historical account should distinguish his 1747 extraction following an unsuccessful couching attempt from his later planned primary cataract extractions and publication of his method. - What is extracapsular cataract extraction?
Your cloudy lens material is removed while part of your lens capsule remains inside your eye. Preserving the posterior capsule later became important because it can support your intraocular lens. - When was the first intraocular lens implanted?
Harold Ridley performed the first intraocular lens implantation in London in 1949. Your modern lens implant developed from this breakthrough through decades of improvements in lens materials, design and power calculation. - What is phacoemulsification?
Your phacoemulsification procedure uses ultrasound with irrigation and aspiration to fragment and remove your cataract through a small incision. Your surgeon normally places an artificial intraocular lens afterwards. - Why was phacoemulsification important?
Your cataract could be removed through a substantially smaller incision than with earlier large-incision extraction techniques. Later advances in foldable lenses, instruments and fluid control made small-incision cataract surgery increasingly practical. - What is femtosecond laser-assisted cataract surgery?
Your femtosecond laser can automate selected stages such as creating the capsulotomy and fragmenting your lens. Your surgeon still completes important parts of the operation and remains responsible for your care. - Is femtosecond laser cataract surgery better for your vision?
Not necessarily. Your laser procedure can perform particular steps very precisely, but clinical trials have not consistently shown better final visual outcomes than conventional modern phacoemulsification.
Final Thoughts: The Evolution of Cataract Surgery
Your modern cataract surgery developed through centuries of advances in lens extraction, infection control, microsurgical instruments and intraocular lenses. If you have cataract surgery today, your cloudy lens will usually be removed through a small incision and replaced with an artificial lens selected using measurements of your eye.
Your treatment will most commonly use established phacoemulsification, while femtosecond laser assistance has not consistently been shown to give you better final vision than conventional surgery.
If you are experiencing blurred vision, glare or difficulty with daily activities, contact us at Eye Clinic London to arrange a consultation and receive personalised advice on cataract surgery in London.
References
- Apple, D.J. and Sims, J. (1996) ‘Harold Ridley and the invention of the intraocular lens’, Survey of Ophthalmology, 40(4), pp. 279–292. Available at: https://pubmed.ncbi.nlm.nih.gov/8658339/
- Davis, G. (2016) ‘The evolution of cataract surgery’, Missouri Medicine, 113(1), pp. 58–62. Available at: https://pmc.ncbi.nlm.nih.gov/articles/PMC6139750/
- Grzybowski, A. and Ascaso, F.J. (2014) ‘Sushruta in 600 B.C. introduced extraocular expulsion of lens material’, Acta Ophthalmologica, 92(2), pp. 194–197. Available at: https://pubmed.ncbi.nlm.nih.gov/23464869/
- Grzybowski, A., Claoué, C. and Schwartz, S.G. (2023) ‘Extracapsular cataract extraction in Europe prior to Jacques Daviel’, Acta Ophthalmologica, 101(3), pp. 349–352. Available at: https://pubmed.ncbi.nlm.nih.gov/36344465/
- Nagy, Z.Z. (2014) ‘New technology update: femtosecond laser in cataract surgery’, Clinical Ophthalmology, 8, pp. 1157–1167. Available at: https://pubmed.ncbi.nlm.nih.gov/24970994/