Eyes are organs that detect light and convert it into electro-chemical impulses in neurons. The simplest photoreceptors in conscious vision connect light to movement. In higher organisms the eye is a complex optical system which collects light from the surrounding environment, regulates its intensity through a diaphragm, focuses it through an adjustable assembly of lenses to form an image, converts this image into a set of electrical signals, and transmits these signals to the brain through complex neural pathways that connect the eye via the optic nerve to the visual cortex and other areas of the brain. Eyes with resolving power have come in ten fundamentally different forms, and 96% of animal species possess a complex optical system. Image-resolving eyes are present in molluscs, chordates and arthropods.

The simplest "eyes", such as those in microorganisms, do nothing but detect whether the surroundings are light or dark, which is sufficient for the entrainment of circadian rhythms.^{[citation needed]} From more complex eyes, retinal photosensitive ganglion cells send signals along the retinohypothalamic tract to the suprachiasmatic nuclei to effect circadian adjustment.

Honey Singh also known as Yo Yo Honey Singh is a Punjabi rapper, singer and a film actor. He started as a session and recording artist, and became a Bhangra producer.

Honey Singh has received the ETC award for the Best sound in 2006 for his song Glassi and the PTC award for the Best Folk Pop Award 2009 for Rebirth and PTC PUNJABI Best Music Director 2011.

It has been reported that he has been paid the highest fees ever for a song (as of 2012) of 70 lakh (US$139,700) for a song in the film Mastaan.

He was born on 15 March 1984 in Hoshiarpur. While in the UK, he studied music at the Trinity School.

It is reported that Honey Singh prefers to sing in his native language Punjabi rather than English, Spanish and French. The Punjabi album International Villager was released on 11 November 2011 (11-11-11). The track Gabru from International Villager featuring singer J-Star topped Asian music charts (including world iTunes and the official BBC asian charts)

He has performed at many college festivals including at Ansal Institute of Technology and Ramjas College, Delhi.

Charlotte Tilbury is one of the world's leading make-up artists, known for her fiery red hair, her penchant for high heels and her “boho” chic style. She has earned her iconic status in the fashion/beauty world through her unparalleled artistic prowess and an inimitable eye for colour that helps her turn 'mere beauties into glossy goddesses.'

Charlotte Tilbury grew up on the island of Ibiza where she developed her sense of creativity and fresh outlook on life. She was influenced by her artist father and the free-thinking environment that encouraged artistic expression. At age 11, Charlotte met the make-up artist Mary Greenwell who mentored her throughout her career as she rose through the ranks in the fashion and beauty industry.

The world’s most glamorous celebs call on Charlotte to create iconic, red-carpet looks. She counts Kate Moss, Gwen Stefani, Gwyneth Paltrow, Kate Hudson, Jennifer Lopez and countless others as clients and friends. She has worked with designers such as Cavalli, Givenchy, Armani and Moschino as well as working on editorial shoots for magazines like Vogue, W Magazine and Love. And each year Charlotte works with the world’s top designers to create the cosmetic colour palettes for their fashion shows. In the UK "Charlotte has become as recognizable as her celebrity clients". She was one of a select few asked to design a T-shirt for Gap's RED campaign. Charlotte has been working as a professional make-up artist for 17 years over during which time she has served as creative director for Helena Rubenstein Cosmetics. Charlotte is represented by Art Partner

Sir James Paul McCartney, MBE, Hon RAM, FRCM (born 18 June 1942) is an English musician, singer-songwriter and composer. Formerly of the Beatles (1960–1970) and Wings (1971–1981), he has been described by Guinness World Records as "The Most Successful Composer and Recording Artist of All Time", with 60 gold discs and sales of over 100 million albums and 100 million singles. With John Lennon, George Harrison, and Ringo Starr, he gained worldwide fame as a member of the Beatles, and with Lennon formed one of the most celebrated songwriting partnerships of the 20th century. After leaving the Beatles, he began a solo career and later formed the band Wings with his first wife, Linda Eastman, and singer-songwriter Denny Laine.

According to the BBC, his Beatles song "Yesterday" has been covered by over 2,200 artists—more than any other song. Wings' 1977 release, "Mull of Kintyre", became one of the best-selling singles ever in the UK, and he is "the most successful songwriter" in UK chart history, according to Guinness. As a songwriter or co-writer, he is included on thirty-one number one titles on the Billboard Hot 100, and as of 2012 he has sold over 15.5 million RIAA certified units in the United States.

Richard Starkey, MBE (born 7 July 1940), better known by his stage name Ringo Starr, is an English musician and actor who gained worldwide fame as the drummer for the Beatles. When the band formed in 1960, Starr was a member of another Liverpool band, Rory Storm and the Hurricanes. He joined the Beatles in August 1962, taking the place of Pete Best. In addition to his drumming, Starr is featured on lead vocals on a number of successful Beatles songs (in particular, "With a Little Help from My Friends", "Yellow Submarine", and the Beatles version of "Act Naturally"). He is credited as a co-writer of the songs "What Goes On" and "Flying", and as the writer of "Don't Pass Me By" and "Octopus's Garden".

As drummer for the Beatles, Starr was musically creative, and his contribution to the band's music has received high praise from notable drummers in more recent times. Starr described himself as "your basic offbeat drummer with funny fills". Drummer Steve Smith said that Starr's popularity "brought forth a new paradigm" where "we started to see the drummer as an equal participant in the compositional aspect" and that Starr "composed unique, stylistic drum parts for The Beatles songs". In 2011, Starr was picked as the fifth-best drummer of all-time by Rolling Stone readers.