A totally unexpected result from my Cataract surgery last week … besides the 20/20 vision, that is. I closed my left eye, and after switching sides a couple of times, thought; Hmmmm…“passing strange! My lights all have been re-binned! Before, my first ”good light”, a UK 4AA LED that I have been using for at least 10 years, went from a Yellowish to cool white, and my $25 eBay Jetbeam PA 40 went from a similar yellowish-tan to cool white! Haven’t tried them yet, but my LED modded Minimags, and the Inova X1 should show similar changes.
My left eye, with 20/200 uncorrected vision, will undergo the same procedure in about a week. It has the same yellowish cast, so I can compare. It’s like switching the white balance on my camera from “Cloudy” to Daylight”. I look forward to the improvement! 8) I’ll still need reading glasses, but, I can read my dashboard instruments, camera screens and eyepiece information, and most other necessaries. except the fine print. I am enthused!
Well that is more than likely the most expensive and risky way to get re-binned emitters, but congratulations on the success!!! That has to be exciting for you gaining that much vision back, even one eye at a time….
Actually, no. The cute little blonde nurse gave me something to “relax” me; then she said I’d be in something called “Twilight Sleep” like for my Colonoscopy, so I could respond when they told me “look at the light”. I made some really intelligent comment like “They never said look at the light during my Colonoscopy!” So I guess I must have been pretty relaxed by then.
The last thing I remember was the anesthesiologist asking “How are things looking?” I said something like “Things are getting a little fuzzy.”, and then I was waking up. Hold my eye still while a sharp object approaches? Not hardly!
I had an early cataract operated on when I was quite young — the replacement lens I got transmits both blue and ultraviolet (so I have to be extra careful because the retina really does accumulate damage from the high energy blue-to-UV range photons when the natural lens isn’t there to protect it).
Here’s a page by a guy who had both eyes operated on and got the UV-transmitting replacements some years back:
Nowadays, almost certainly, your replacement lens definitely blocks UV.
Here’s samples of some human lenses showing how they naturally changed to become more yellow, block more blue, with age:
(Those are for-example, not necessarily typical, there’s a lot of variation)
So when we see people arguing about the color temperature of lights — what you see and what I see are bound to be different.
Note this is also the reason for protecting youngsters, especially, from getting too much bright blue-to-UV light exposure —
their pupils open wider, and their lenses are clearer — so they’re wide open to it, unlike adults.