Why Lens Replacement Suits Patients Over 45

What happens to the lens at 45

The natural lens focuses by changing shape, controlled by a ring of muscle. It grows throughout life and stiffens with age, and from the early forties it no longer changes shape enough to focus at reading distance. This is presbyopia. It progresses through the fifties, by which time the lens has little focusing ability left, and it continues into the lens changes that eventually become a cataract. Every adult experiences it.

Why corneal surgery is a compromise after 45

LASIK, PRK and SMILE change the cornea's curvature to correct distance vision. They do nothing to the lens. A 50 year old who has LASIK sees clearly at distance and still needs readers, and as the lens continues to change, the distance correction may drift too. Monovision, setting one eye slightly near, helps many patients in their forties but is a workaround rather than a fix, and it becomes less satisfactory as presbyopia advances. For patients who have started to need reading glasses, corneal surgery treats the problem they used to have rather than the one they have now.

Why lens replacement fits

Refractive Lens Exchange replaces the aging lens with an implant chosen for your vision goals:

• Multifocal, trifocal and extended depth of focus lenses give usable vision at distance, intermediate and near
• Toric versions correct astigmatism at the same time
• The Light Adjustable Lens lets the result be fine tuned after surgery
• The correction does not drift with age, because the lens that was changing is gone
• A cataract cannot develop, so the cataract surgery most people need in their sixties or seventies is never required

Who is a candidate

Patients over about 45 with a healthy macula and cornea, a stable tear film, and a clear goal of reducing dependence on glasses. Patients with early lens changes are particularly good candidates, because the lens is already on its way to a cataract. Patients under 45 whose lens still focuses are usually advised to keep it and to consider corneal surgery or the EVO ICL instead. The evaluation examines the lens, the macula and the cornea and gives a plain recommendation.

What the operation involves

The same procedure as cataract surgery, typically about 15 minutes, under light sedation, with a day or two of recovery. Timing between eyes is individualized. Drops for a few weeks. Vision refines over the following weeks as the brain adapts to the new lens. The procedure is elective and quoted in writing, with financing available.