It's a strange old world that we live in, isn't it Why is it that the population of the world still continues to have sight problems and why is vision loss on the increase

the news and views describing patients that had operations to recover sight after many years of blindness and how they acquire visual skills

Researchers are trying to determine whether a sexually transmitted disease might have caused the blindness found in at least two mountain lions in the Black Hills. Steve Griffin, a wildlife biologist with the state Game, Fish and Parks Department, said tests on two lions are consistent with chlamydia, but nothing is confirmed.

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A new study led by a scientist at Children's Hospital Oakland Research Institute (CHORI) is the first to conclude that Chlamydia trachomatis is evolving at a rate faster than scientists first thought or imagined. Chlamydia trachomatis is a bacterium that is the leading cause of sexually transmitted diseases and the second leading cause of blindness worldwide. Scientists believe the bacterium is evolving through a process called recombination where genes from one or more strains combine to create new strains and – theoretically – new diseases.

Designing for disabilities

She's one of an alarming 21 cases treated so far this year at the University of Miami's Bascom Palmer Eye Institute, which typically sees that many in a year.