Am I a candidate for ICL?
Most nearsighted adults with stable vision are candidates, here’s what actually decides it.
Who is ICL especially good for?
You may be a strong candidate if you’re a nearsighted adult with a stable prescription and no cataract. ICL is especially helpful for people with active lifestyles, those with allergies or dry eye who struggle with contact lenses, and anyone who’s been told they’re not a good LASIK candidate because of thin corneas or a high prescription. Because it doesn’t reshape the cornea, it won’t worsen dry eye, and many patients find their dryness improves once they stop wearing contacts every day.
What prescriptions and ages can ICL treat?
ICL corrects nearsightedness, with or without astigmatism, across a wide range that spans moderate prescriptions as well as very high ones beyond what laser can safely treat. The US FDA labeling is more specific than the single range usually quoted, and the detail matters for what you should expect.
| Spherical equivalent | EVO ICL (non-toric) | EVO TICL (toric) |
|---|---|---|
| −3.0 D to −15.0 D | Correction of myopia, with 2.5 D of astigmatism or less | Correction of myopic astigmatism, cylinder 1.0 D to 4.0 D |
| Beyond −15.0 D to −20.0 D | Reduction of myopia, with 2.5 D of astigmatism or less | Reduction of myopic astigmatism, cylinder 1.0 D to 4.0 D |
The word that changes at −15.0 D is the important one. “Correction” means the aim is to eliminate the prescription. “Reduction” means the aim is to bring a very high prescription down substantially, and a small residual prescription afterwards is an anticipated outcome rather than a complication. If you are past −15 D, ask your surgeon what residual refraction they are planning for. Beyond −20 D, an ICL can reduce the prescription into a range a laser can comfortably finish, a staged combination called bioptics.
Endothelial cell count depends on your age
The corneal endothelium is a cell layer that does not regenerate, so the FDA labeling sets a minimum cell density before surgery. It is not a single cutoff: because a younger eye has to last longer, the requirement is highest for the youngest patients and eases with age and with a deeper anterior chamber. Not meeting the minimum is a contraindication.
| Age at implantation | ACD ≥ 3.0 mm | ACD ≥ 3.2 mm | ACD ≥ 3.5 mm |
|---|---|---|---|
| 21–25 | 3,875 | 3,800 | 3,250 |
| 26–30 | 3,425 | 3,375 | 2,900 |
| 31–35 | 3,025 | 2,975 | 2,625 |
| 36–40 | 2,675 | 2,625 | 2,350 |
| 41–45 | 2,350 | 2,325 | 2,100 |
| Over 45 | 2,075 | 2,050 | 1,900 |
Minimum endothelial cell density in cells/mm², from the FDA EVO/EVO+ ICL labeling. The thresholds are set so that a patient should still have at least 1,000 cells/mm² at age 75. “True ACD” here is measured from the back surface of the cornea; if your device measured from the front, corneal thickness must be subtracted. Most healthy eyes comfortably exceed these numbers, and specular microscopy at your evaluation measures it directly.
The labeling also requires an anterior chamber depth of 3.00 mm or greater, measured from the corneal endothelium to the front of the crystalline lens, an anterior chamber angle of at least Grade III on gonioscopy, and a stable refractive history within 0.5 D for the year before surgery. A true ACD below 3.00 mm is listed as a contraindication, though some experienced surgeons do treat below it off-label and published outcomes in such eyes have been good when the lens is sized carefully (Clinical Ophthalmology, 2025). Source: FDA EVO/EVO+ ICL labeling (P030016/S035). Note that the linked document states an age range of 21 to 45, because it is the original 2022 labeling. The FDA expanded the approved age range to 21 to 60 in February 2026; that approval changed the age indication only, leaving the prescription ranges, the anterior chamber depth requirement and the refractive stability requirement exactly as written above.
The EVO ICL is FDA-approved for adults 21–60, the FDA raised the upper age limit from 45 to 60 in February 2026, and experienced surgeons also treat carefully selected patients from about 18. Younger patients need a documented stable prescription; older patients remain candidates as long as they haven’t developed a cataract.
What about my eye anatomy?
One measurement that comes up is the depth of the space at the front of the eye (the anterior chamber). A roomier eye gives more margin, but a narrower one isn’t automatically a “no.”
This is where surgeon experience matters most. Expert ICL surgeons are comfortable across a wide range of anatomy, including narrower eyes that a less-experienced surgeon would turn away. If you’ve been told your eye is borderline, it’s worth seeking out a high-volume specialist before assuming ICL is off the table. See how to find the right surgeon.
Do I need a retina check first?
Because many ICL patients are highly nearsighted, a careful look at the retina is a good idea, nearsighted eyes carry their own baseline retinal risk regardless of surgery. Your surgeon will advise whether a dedicated retina evaluation is warranted for you.
Getting ready for your consultation
Plan to be out of contact lenses before your measurements, commonly about a week for soft lenses and longer for rigid lenses, so your eyes are measured in their natural shape. Your clinic will give you exact instructions when you book. With enough advance planning, some practices can even perform the surgery the same day as your consultation.
Educational content; only an in-person evaluation can determine if ICL is right for you.