Painless and progressive, cataracts slowly cloud the lens. The first symptom of cataracts is often decreased night vision. The light distortion caused by cataracts also frequently produces halos around lights -- again, mostly at night. Blurry vision is also common.
sonata form. n. Music. A form of a movement consisting of three sections, the exposition, development, and recapitulation, often followed by a coda.
Sonata form is used in many types of large-scale instrumental works of the late 18th century and the 19th century, including: 1  Symphonies, which are technically Sonatas for Orchestra.  Most Concertos are written in a modified 3-movement Sonata form, excluding the Minuet/Scherzo movement.