Esther Medley of Centralia (U.S.) is legally blind, but when she bowls, she can see a bit of the floor to line up with the lane.

Medley (94) can't see straight ahead, so her 86-year-old husband Ralph tells her which pins are left after her first ball.

That's how Medley recently bowled a score of 244, which included eight strikes. It was the second-highest score of the year for her league.

The Medleys have been playing in the senior league since 1979.

Beep baseball is a form of baseball adapted for visually impaired people. The game is played with standard softball bats, a 16-inch circumference ball, which emits an audible beep tone, and two bases (48-inch pylons), which emit an audible buzzing, sound.

A beep baseball team consists of six players, all whom are blindfolded to equalise each player's degree of visual impairment. In addition, each team may use two sighted spotters when playing defense and a sighted pitcher and catcher when batting.

A beep baseball game consists of six innings in which each team is allowed three outs. An ‘out’ consists of four strikes or an occasion where a fair ball is struck by the batter, but the ball is fielded prior to the batter reaching the base.

A ‘run’ is scored if the batter hits a fair ball and contacts a base prior to the ball being under the control of a fielder. A game is won by the team scoring the most runs during the course of the game.