Colour vision link may help myopia research

(Medical Xpress)—A possible link between colour vision and the development of myopia - or near-sightedness - has been discovered by an international group, including a researcher from The University of Western Australia.

Winthrop Professor David Hunt and colleagues in the UK and the US found the link during research into a that affects males and is carried by females.

Their findings are published in the journal and Vision Science.  The work is an important step towards understanding - and one day treating - myopia, which is one of the world's most common eye defects.

The researchers analysed genes that specify the photosensitive (opsin) pigments found in in the retina of seven families with Bornholm Eye Disease (BED).  BED was first described in a big family from the Danish island of Bornholm.

The families in this study were from Denmark, Minnesota (US) and the UK.  The UK family originated from Morocco.  All affected individuals have significantly reduced vision, are red-green colour blind and suffer from infantile myopia. 

The study established that opsin is responsible for both cone dysfunction ( in the eye are responsible for colour vision) and the colour vision defect.

"Since myopia is an integral component of the BED syndrome, it would seem likely that this must also arise from the dysfunctional cone photopigment and the disruption of the normal cone mosaic, but how this results in myopia remains uncertain," the researchers write.

Related Stories

Thyroid affects color vision

Mar 29, 2011

What part does the thyroid gland have in vision? Thyroid hormone is crucially involved in controlling which visual pigment is produced in the cones. Previously, it was assumed that the colour sensitivity of ...

Recommended for you

A second look at glaucoma surgery

Sep 18, 2014

New research led by Queen's University professor Robert Campbell (Ophthalmology) has revealed using anti-inflammatory medications after glaucoma laser surgery is not helpful or necessary.

Stem cells have potential to repair diseased corneas

Sep 18, 2014

Corneal transplant (keratoplasty) is a known means of successfully treating corneal disease. However, without unlimited donor corneas, researchers say there is a need to study alternate methods of treatment ...

New glaucoma culprit is found

Sep 15, 2014

Glaucoma, a leading cause of irreversible blindness, is associated with elevated pressure in the eye. This elevated pressure essentially is due to a plumbing problem. Fluid builds up in the eye, increasing ...

User comments