The most common and most likely answer to this crossword clue is the 7 letter word EYEFULS
I've seen this crossword clue in The Daily Telegraph
E
Y
E
F
U
L
S
Buddy explains!
The straight part
We know that "Sights" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case sights = eyefuls.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does EYEFULS mean?
EYEFULS noun- A full or complete view; a good look.
- (sometimes ironic) A remarkable sight or a very attractive person.
- An amount of material blown into the eye.