Kieswetter broke his nose and damaged his eye socket and cheekbone while batting against Northants last July.

The 27-year-old played 46 one-day internationals and 25 Twenty20 matches for England, but has not featured for his country since January 2013.

"I feel mentally I will never again be the player that I was," he said.

"I have had a terrific career, with plenty of ups and occasional downs, and I am calling time on my career and walking away with no regrets."
Kieswetter, who sustained his injuries when a delivery from Northants' David Willey went through his helmet grille, has struggled to regain perfect vision.
Having undergone surgery, he did briefly return to action for Somerset in September, before heading out to South Africa to play for Warriors in their domestic T20 competition, scoring 199 runs in 10 outings.
But during that period he realised his vision was still impaired and, after confirming in January that he would miss the 2015 season, he has now opted to retire from the sport.
-BBC