Renato,
I had my cataracts done just over 12 months ago. My left eye in particular has a slightly distorted outer surface of the cornea, which was leading to optical aberrations, in addition to the cataract issues. My ophthalmologist recommended IC-8 "small aperture" lenses for me. I am delighted with the outcome, but these lenses may not suit everybody.
https://www.bauschsurgical.eu/produc...lenses/ic-8tm/
The IC-8 lenses have an opaque "donut" with a small central open aperture. This minimises the amount of "off-axis" light entering the eye. This has dramatically reduced the amount of aberration and astigmatism I get from my mis-shaped corneas. The "pinhole" lenses mean that in good light, I have crystal-sharp vision from about 20 cm out to infinity. My daytime vision is excellent, as is my night-time vision, but the reduced aperture means that in low light conditions, I struggle a bit to read fine print etc. (My pupils open up as normal for a person of my age, but the fixed aperture lens means that my effective aperture is equivalent to what my pupils would be in a well-lit room or similar.)
As far as looking through a telescope is concerned - I guess it's like having perfect vision, but having the telescope "stopped down" a bit. The improvement in clarity of my night vision more than compensates for the slight loss of brightness.