Eye Care

Smart Lens and Cataract

Cataract removal or refractive lens exchange, planned after a full eye examination.

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Procedure time
Usually 15–30 minutes per eye
Anaesthesia
Numbing drops or local, sometimes sedation
Time in Istanbul
Often 5–8 days for both eyes
Back to desk work
Often after a few days
Overview

About Smart Lens and Cataract

In cataract surgery, the eye’s natural lens, which has become cloudy, is removed through a tiny incision and replaced with a clear artificial lens. When the same operation is done to reduce dependence on glasses in someone without a significant cataract, it is called refractive lens exchange.

Several types of replacement lens exist. Standard lenses give clear vision at one distance, toric lenses also correct astigmatism, and multifocal or extended-depth lenses, often called “smart lenses”, aim to give a wider range of vision. Each involves trade-offs, such as glare at night with some multifocal designs, and not every eye is suitable for every lens.

Suitability

Who it may be suitable for

  • A cataract that affects daily activities such as reading or driving
  • Over around 45 with presbyopia or a high prescription, for lens exchange
  • Otherwise healthy eyes, as other eye conditions can limit the result
  • Understanding the trade-offs of each lens type

These are general points only. Whether a procedure is suitable for you is decided by the treating ophthalmologist after a full eye examination and detailed measurements in the clinic.

The process

How it works

  1. Records review

    You share your current glasses or contact lens prescription, any previous eye reports and your general medical history. The team confirms whether a full assessment is worthwhile.

  2. Full eye examination

    In Istanbul, the ophthalmologist examines both eyes and takes detailed measurements. Drops that widen the pupils may blur your vision for a few hours, so you should not drive afterwards.

  3. Lens surgery

    The eye is numbed, the cloudy or natural lens is broken up and removed through a tiny incision, and the new lens is folded and placed inside. The second eye is usually done a few days later.

  4. Follow-up checks

    The eye is checked after the procedure, usually the next day, before you fly. Later checks are arranged with an eye doctor near home, with your reports in hand.

Recovery

What recovery usually looks like

  1. First day

    Vision is often blurry at first and the eye may feel gritty. A shield protects the eye at night, and the eye is checked the next day.

  2. First weeks

    Use the prescribed drops exactly as instructed. Avoid rubbing the eye, swimming, heavy lifting and dusty places for the time the clinic advises.

  3. Weeks 4–6

    Vision stabilises. If glasses are still needed for some tasks, a new prescription is usually checked at this stage.

  4. Months to years

    Some people develop clouding behind the new lens (posterior capsule opacification), which is treated with a quick laser procedure.

Timelines vary between people. Always follow the aftercare instructions from your treating clinic.

Good to know

Risks and considerations

  • Infection inside the eye is rare but serious and needs urgent treatment.
  • Swelling at the back of the eye, raised eye pressure and retinal detachment are uncommon but possible. The risk of retinal detachment is higher in very short-sighted eyes.
  • Multifocal and extended-depth lenses can cause glare and halos at night and slightly reduced contrast; some people find these difficult.
  • The final prescription may not be exactly as planned, and glasses may still be needed for some activities.
  • For lens exchange in eyes without cataract, these risks are weighed against laser options or continuing with glasses.
FAQ

Common questions

What is a “smart lens”?

It is an informal name for multifocal or extended-depth-of-focus lenses, which aim to give useful vision at more than one distance. They are not suitable for everyone, and the ophthalmologist explains the trade-offs.

Are both eyes done on the same day?

Usually not. Most surgeons operate on one eye and treat the second a few days later, once the first is healing well.

Can a cataract come back?

The cataract itself cannot return, but the membrane holding the new lens can become cloudy months or years later. This is treated with a short laser procedure.

How long should I stay in Istanbul?

It depends on the procedure: most people plan for the assessment, the procedure day and at least one follow-up check before flying. Your coordinator confirms the schedule once the clinic has examined you.

How is the cost decided?

It depends on the procedure the ophthalmologist recommends after the examination, the technology or lens used and whether one or both eyes are treated. You receive a written quote before anything is booked, with no obligation to proceed.

Related treatments
Next step

Talk to a coordinator about Smart Lens and Cataract

Share your details and a coordinator will reply with clear next steps. There is no obligation to proceed.

This page is general information, not medical advice; a treating clinician confirms your plan after assessment. ELAVIA Global coordinates care; clinical evaluation and treatment are delivered by independent, licensed partner facilities and their specialists.