Re: Effects of lens implants on color vision (Was RE: Human color vision)
Re: Effects of lens implants on color vision (Was RE: Human color vision)
- Subject: Re: Effects of lens implants on color vision (Was RE: Human color vision)
- From: Refik Telhan via colorsync-users <email@hidden>
- Date: Wed, 15 Jan 2020 19:32:08 +0300
- Thread-topic: Effects of lens implants on color vision (Was RE: Human color vision)
Hi Wayne,
This is the expected behavior. The UV-blocking glasses typically suppress
wavelengths below 400 nm. The OBAs in the paper typically emit blue light at
430 nm in response to the UV component of the light at 330 nm. While the
glasses block 330 nm, they let the 430 nm and the rest thru.
Best,
Refik Telhan
Light and Color Management consultancy
On 15.01.2020 18:35, "colorsync-users on behalf of Wayne Bretl via
colorsync-users" <colorsync-users-bounces+rtelhan=email@hidden on
behalf of email@hidden> wrote:
I just did a little test with brightened and un-brightened paper. Frist, I
checked that the glasses do indeed mostly block a UV led flashlight, and
start to darken.
Then I checked the tint on both papers under fluorescent light with the
undarkened lens, and the tint was nearly equally visible to me.
-----Original Message-----
From: colorsync-users
<colorsync-users-bounces+waynebretl=email@hidden> On Behalf Of
Graeme Gill via colorsync-users
Sent: Tuesday, January 14, 2020 11:54 PM
To: email@hidden
Cc: Graeme Gill <email@hidden>
Subject: Re: Effects of lens implants on color vision (Was RE: Human color
vision)
Wayne Bretl via colorsync-users wrote:
> Before I developed cataracts, they appeared to have a slight amber
> tint, especially noticeable in natural outdoor light, but also by
> placing them on a piece of white paper under artificial light.
If the paper was cheap, then this effect may be mostly the lens blocking the
UV that triggers the paper Fluorescent Whitening Agent.
Graeme Gill.
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