Thanks for all of your replies.
I'm using the SL Viewer: Second Life 2.7.2
I will check out and see if there's a "fast alpha" on the viewer I'm using.
And the lashes are the prim lashes that you can attach and aren't part of the skin.
Also when they are first attached, they rez in perfectly and look like lashes then the image switches to the clump look.
The lashes I'm wearing in the first picture are prim lashes that came with a skin and they look clumpy.
The lashes I'm wearing in the second picture are prim lashes I just bought to see if maybe there was something wrong with the first lashes I had on.
Same effect no matter which lashes I attach.