A half turn is 180° and is known as a straight angle (or angle on a straight line). A three-quarter turn is 270°. An acute angle is less than 90°. An obtuse angle is between 90° and 180°.

This is represented as a straight line. One quarter of a rotation is ... If an angle is less than 90 degrees, it is called an acute angle. See how cute it is? If an angle is greater than ...

When your iris and cornea move closer together, it “closes the angle” between them. When this happens suddenly, it’s called an acute attack and is very painful. Acute angle closure glaucoma ...

Acute angle closure glaucoma caused by anterior subluxated lens is rare. To the best of our knowledge, there are only few reports of the anterior chamber angle closed by subluxation of the lens.

To study the safety and efficacy of immediate argon laser peripheral iridoplasty (ALPI) as initial treatment of acute phacomorphic angle-closure (phacomorphic glaucoma) before cataract extraction.