If you’re considering cataract surgery and wondering how comfortable it will be, you’re not alone. At Panthagani — Professor Jesse Panthagani, consultant ophthalmologist — we take time to discuss anaesthesia choices with you, from simple numbing eye drops to light sedation and local anaesthetic blocks. The aim is straightforward: safe, calm surgery tailored to how you feel and what you need.
Quick Answer
Most people in the UK have cataract surgery with numbing eye drops (topical anaesthesia) and do very well without injections or a general anaesthetic. Light sedation can be added if you feel anxious, and a local anaesthetic block (Sub-Tenon’s) is an option if we need the eye to be stiller or more comfortable for a complex case. We decide together after a careful consultation.
Why anaesthesia choices matter
Cataract surgery is quick — usually 10–20 minutes — but your comfort and confidence matter as much as the technical details. The right plan helps you stay relaxed, reduces sensation of pressure or bright light under the microscope, and supports a smooth recovery. In Northampton and across our East Midlands catchment — Northampton, Kettering, Market Harborough, Peterborough, Stamford and Oundle — we tailor anaesthesia to you, not the other way round.
The main cataract surgery anaesthesia options in the UK
This guide explains cataract surgery anaesthesia options UK patients commonly choose, and what we consider together.
Eye drops (topical anaesthesia)
- What it is: Strong numbing drops on the surface of the eye, often with a small amount of local anaesthetic placed inside the eye at the start (intracameral lidocaine) for added comfort.
- What it feels like: You’ll be awake. You’ll see light and some movement, but not detail. You may feel cool water, gentle pressure or vibration during phacoemulsification (the ultrasound step that softens and removes the cloudy lens).
- Who it suits: Most people. It avoids needles around the eye and wears off quickly for a prompt recovery.
Light sedation (in addition to eye drops or a block)
- What it is: A calming medicine by mouth or a small IV dose (commonly midazolam), so you feel relaxed yet breathing for yourself. It’s not a general anaesthetic.
- What it feels like: Drowsy, detached, less aware of time. You may remember little of the operation. A friend or family member must escort you home, and you must not drive for 24 hours.
- Who it suits: People who feel very anxious, have a strong blink reflex, or prefer a little extra calm.
Sub-Tenon’s block (local anaesthetic injection)
- What it is: A small amount of anaesthetic placed under the thin white coating of the eye (the Tenon’s layer). It numbs the eye more deeply and reduces movement.
- What it feels like: A few seconds of pressure during placement; then the eye feels comfortably heavy. You’re still awake and breathing normally.
- Who it suits: Dense cataracts, small pupils, significant eye movement, or when we want extra stillness and comfort.
Peribulbar/retrobulbar block
- What it is: A deeper injection around or behind the eye. Less common nowadays but still used in selected cases.
- Who it suits: Specific complex situations; discussed individually.
General anaesthesia (asleep)
- What it is: A full anaesthetic with an anaesthetist; you sleep through surgery.
- Who it suits: Rarely needed — for example, when someone cannot lie flat, cannot keep still, or has particular medical needs. It carries the usual risks of general anaesthesia and longer recovery, so we reserve it for when it’s clearly in your best interests.
Which option might suit you?
We’ll decide together after assessing your eyes, general health and preferences. Factors we consider include:
- Your comfort and anxiety levels.
- Ability to lie flat for 10–20 minutes and keep still with guidance.
- Cough, tremor, back or neck issues, or sleep apnoea.
- The density of your cataract, pupil size, previous eye surgery or trauma.
- Medications (including blood thinners) and allergies.
- Your goals after surgery, such as driving confidence or reading without glasses, and the planned lens type (monofocal, toric, EDOF or multifocal IOL).
Most patients from Northampton, Kettering and surrounding towns do very well with topical drops alone. If you prefer extra reassurance, we can add light sedation. For more complex cataracts, a Sub-Tenon’s block can make things even more comfortable and still.
What you may feel and see during surgery
- Light and colours: The microscope light can look bright; many people see swirling colours. This is normal.
- Touch and pressure: You may feel gentle pressure or cool fluid. Sharp pain is not expected; if you feel discomfort, we can give extra anaesthetic.
- Sounds and voices: You’ll hear conversation and the soft buzz of instruments. We’ll talk you through key moments.
- Vision during the procedure: You won’t see instruments in detail, just shapes and light.
With a Sub-Tenon’s block, you’ll feel less eye movement and typically less pressure. With sedation, you may be sleepy or not remember the details.
Safety, side effects and recovery
- Local anaesthesia with or without sedation is very safe for cataract surgery. Serious complications are uncommon.
- Eye drops: Temporary stinging is possible. Sensation returns within an hour or so.
- Sub-Tenon’s block: Mild redness or bruising on the white of the eye can occur and settles. Very rarely, a deeper bleed or globe perforation can happen; we minimise risk with careful technique and patient selection.
- Sedation: Drowsiness, temporary unsteadiness, or nausea are possible. You’ll need an escort, must avoid important decisions, alcohol and driving for 24 hours.
- Blood thinners: Most people continue regular anticoagulants/antiplatelets. Do not stop any medication unless advised by your medical team.
- Driving and the DVLA: Do not drive on the day of surgery. You may be able to drive once the eye is comfortable, your vision meets DVLA standards, and you are not under the influence of sedation — often from the next day. We’ll advise based on your individual recovery and vision.
As always, we’ll discuss suitability and risks for your particular circumstances during your consultation.
What happens on the day
- Arrival and checks
- We confirm your details, go over consent and answer last questions. Your chosen anaesthesia plan is reconfirmed.
- Anaesthetic preparation
- Numbing drops are started. If you’ve chosen IV sedation, a small cannula is placed. For a Sub-Tenon’s block, we instil drops, clean the eye and place the anaesthetic.
- In theatre
- A sterile drape covers the skin around your eye. You look towards a bright microscope light. We perform phacoemulsification to remove the cloudy lens and place your new intraocular lens (IOL). No stitches are usually needed.
- Recovery
- You rest briefly, have a drink, and receive your eye drops plan and written instructions. Your escort takes you home.
- Aftercare
- Most people notice clearer, brighter vision quite quickly, though it can fluctuate for a few days. We review you and discuss the second eye if planned.
Who might prefer eye drops alone vs a block or sedation?
Eye drops alone may suit you if:
- You’re comfortable with medical settings and can lie fairly still.
- Your cataract is straightforward.
- You prefer the fastest-possible recovery and minimal intervention.
Add light sedation if:
- You feel very anxious or have had a difficult experience before.
- You’re sensitive to bright light or have a strong blink reflex.
- You’d like to feel drowsy and less aware, while still breathing for yourself.
Consider a Sub-Tenon’s block if:
- Your cataract is dense or your pupil is small.
- You have nystagmus, tremor, or find it hard to keep the eye still.
- You’ve been uncomfortable during previous topical-only surgery.
We’ll balance these choices with your medical history and personal preferences.
Local, consultant-led care in Northampton and the East Midlands
At Panthagani, your care is consultant-delivered from first conversation to final check. We look after patients across Northampton, Kettering, Market Harborough, Peterborough, Stamford, Oundle and the surrounding Northamptonshire, Rutland and Cambridgeshire area. Alongside cataract surgery, we offer laser vision correction (LASIK), refractive lens exchange, premium IOLs (including toric, EDOF and multifocal) and complex anterior-segment care. In every case, we tailor anaesthesia and lens choices to your lifestyle — whether that’s comfortable driving at night, reading without strain, or enjoying outdoor hobbies.
Answers to common questions
Q: Will I be awake during cataract surgery?
A: Yes, unless you have a general anaesthetic (which is rare). With drops alone, you are awake and comfortable. With light sedation, you are relaxed and may remember little of the procedure.
Q: Can I choose to be completely asleep?
A: General anaesthesia is possible but not routinely needed. We reserve it for specific medical or surgical reasons after discussing the pros and cons with you.
Q: I’m nervous. Will light sedation make it safe?
A: Sedation is designed to help you feel calm, and many anxious patients do very well with it. Safety monitoring is continuous. We’ll confirm it’s appropriate for you at consultation, considering your health and any sleep apnoea or breathing conditions.
Q: Will I see instruments coming towards my eye?
A: No. You’ll see light and vague shapes only, not detailed instruments.
Q: I’m on blood thinners. Does that change my anaesthesia?
A: Usually not. Topical anaesthesia is unaffected, and Sub-Tenon’s blocks are generally safe. Do not stop anticoagulants unless advised by your medical team. We’ll coordinate with your GP or cardiologist if needed.
Q: Can both eyes be done on the same day with sedation?
A: Sometimes, immediate sequential bilateral cataract surgery is considered in selected patients under strict protocols. Many people still have eyes done on separate days. We’ll discuss what’s safest and most suitable for you.
Q: How soon can I drive?
A: Not on the day of surgery. Driving usually resumes once the eye is comfortable, vision meets DVLA standards and any sedation has fully worn off — often the next day. We’ll confirm this for you individually.
A note on expectations
Cataract surgery greatly improves clarity and contrast, but you may still need glasses depending on your lens choice (monofocal, toric, EDOF or multifocal) and your visual tasks (driving, screens, reading fine print). We’ll set realistic expectations and help you choose an option that fits your lifestyle.
Next steps
- Book your free video assessment to discuss cataract surgery anaesthesia options and lens choices: book a free video assessment .
- Prefer to speak to us? Call Professor Panthagani’s team on 07300 61 71 71 .