Observational studies of whole lenses from a variety of etiologies have provided evidence that compaction is an ongoing process affecting fibers at all stages of lens development, growth and aging[ 18, 19, 44- 46].
It was not associated with any signs of opacification of the lens during an observational period of one week after exposure but the long term effects are unknown.
In fact, according to observational studies, cataract surgery to replace clouded lenses with artificial intraocular lenses (IOLs), which increase light transmission, may improve not only visual acuity and quality of life 23 but also sleep quality, 24 27 depressive moods 28 31 and life expectancy.
Invariably, most participants start out not reporting observational data, but rather, their conclusions about their observational data -- conclusions drawn after running such data through the lens of personal experience.
An observational, cross-sectional, non-comparative, multicentre study was conducted in France and Spain between June 2007 and January 2008 involving patients who had a ReSTOR® lens implanted in both eyes, with the last eye operated at least 1 year before the inclusion date.
See also contact lens; lens.
Simple observational comedy.
But observational data can".
Classic biscuit-based observational comedy.
We're not observational comedians.
The exhibition's title, and much of its observational reportage, nods towards Spender and Trevelyan and their fly-on-the wall approach, but it adds up to nothing less than a potted social history of Blackpool though the lens of some of Britain's greatest documentary photographers, including Bert Hardy, Tony Ray-Jones, Homer Sykes, Chris Steele-Perkins and Martin Parr. Steele-Perkins and Martin Parr
