An enhanced monofocal can add real intermediate vision, but a postoperative result is the lens plus the refractive target, residual prescription, astigmatism, tear film and test distance. If the dashboard or computer is disappointing, check those parts before declaring that the lens “does nothing.”
What "residual refraction" means
Residual refraction is the prescription left after surgery: nearsightedness, farsightedness or astigmatism that remains after the intended target. Even a small shift can move the whole useful range closer or farther. It may make intermediate vision look better or worse without changing the IOL design itself.
Why measurement precision matters more with this lens category
A defocus curve maps acuity while controlled lens power is added in steps. It shows where the group result stays useful, but it assumes a defined correction and testing method. Your uncorrected daily vision also includes the refractive outcome of surgery.
An automated refraction is a starting measurement, not the final explanation. If symptoms and the machine reading do not agree, a careful refraction test using trial lenses, repeat tear-film assessment and examination can show whether a small correctable error is present.
What this means for you
If intermediate vision is weaker than expected, ask for the actual postoperative refraction, remaining astigmatism, the condition of the eye surface and acuity at your real working distance. A glasses trial can help show how much of the complaint is correctable before anyone discusses another procedure.
An enhanced monofocal is still not a promise of near vision. Its demonstrated benefit should be judged against the exact standard monofocal used for comparison and separated from the refractive target used in your eye.
You can read more about how this lens category compares with others on the enhanced monofocal IOL page, and see a closer look at one specific design on the Tecnis Eyhance review.