(1) That comet is invisible to the unaided eye.

(2) This fungus can just be detected by the unaided eye.

(3) A nearby star, visible with the unaided eye, is ringed with two rocky asteroid belts and an outer icy halo, making it a three-ring cosmic circus.

(4) The symptoms are usually quite acute and can be seen with the unaided eye.

(5) Inclusions in I 1 diamonds often are seen to the unaided eye.

(6) For starters, try scanning for Andromeda galaxy with the unaided eye or binoculars.

(7) If you can't see the Andromeda galaxy with the unaided eye, try binoculars.

(8) Gross crystalline imperfections like twinning are apparent to the unaided eye. Sentencedict.com

(9) By the way, there's a second galaxy — M33, in the constellation Triangulum – that some experienced observers have glimpsed with the unaided eye, under perfect sky conditions.

(10) Orange Peel - A roughened surface that is visible to the unaided eye.

(11) For starters, try scanning for the Andromeda galaxy with the unaided eye or binoculars.