Hi Again,

Sorry for all the separate posts but I can't type very long. You all know how bad my spelling has become anyway. These articles explain the maternally inherited mitochondrial DNA sequence relating to vision problems that some of us have. Love, Roz xxx

Retinitis pigmentosa
http://www.nlm.nih.gov/medlineplus/e...cle/001029.htm

Leber hereditary optic neuropathy
http://ghr.nlm.nih.gov/condition=leb...pticneuropathy