Jump to content
Hallucinogen Persisting Perception Disorder (HPPD) Support Forum

A Chronic Impairment of Colour Vision in Users of LSD

Sign in to follow this  

About This File

A Chronic Impairment of Colour Vision in Users of LSD


Summary: Forty-six users of the hallucinogen lysergic acid diethylamide were

compared with 31 controlson a testof colour discriminationan average of two

years after their last exposure to the drug. Controls performed better than users,

and LSD users without flashbacks performed better than users with flashbacks.

An analysis of variance between the three groups was significant at P <0.001.

This study suggests that some users of LSD may have a sustained or irreversible

impairment in colour discrimination.

User Feedback

Recommended Comments

There are no comments to display.

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Add a comment...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.