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.
However many trends can be attributed to the form generally. Sonata Allegro form can simplistically be described as an ABA' form. The first A section is called the Exposition. (This section is repeated verbatim in classical performance, actually making the overall form AABA').hile there is a formula that can be applied, there was not a rigid, formal concept for the form. Rather it evolved over the classical era and beyond. Haydn was one of the early exponents of this form. It was named Sonata Allegro, because the final Allegro movement of a Sonata was most often created in this form.