principales causes de cécité dans le monde selon l'OMS



It consists of partial or total clouding of the lens resulting in a gradual decrease of the vision, a feeling of mist before the eyes, dazzle caused by bright light, trouble distinguishing colours...
In most cases, cataract manifests with old age. This vision ailment often starts around 60 years of age, but certainly not rare around 50 and can even occur at 40. This disease alone is responsible for nearly 50% of the cases of blindness in the world but remains curable, especially thanks to the phaco-alternative used by the mass surgical campaigns of Nadi al Bassar.

Blindness caused by corneal ailments is a big problem of public eye health. Regarding the causes of blindness and, according to the World Health Organization (2002), “corneal opacity” affects 1.9 million people (that is 5.1 % of the total number of blind people in the world). That figure would be considerably higher if we added the other corneal pathologies responsible for blindness (such as trachoma, vitamin A deficiency, ophtalmia neonatorum and onchocerciasis). In addition, there probably are tens of millions of people blind in one eye due to a corneal disease.
However, a corneal transplant is often the answer to all those diseases and is one of the surgeries that are funded by Nadi al Bassar in collaboration with the Eye Bank.


Macular degeneration affects the elderly and is a natural consequence of aging. The macula is the centre of the retina; that is what enables us to see details clearly and distinguish colours. When the macula deteriorates, we lose our « visual acuity ». Central vision (central visual field) est affected, peripheral vision (in the peripheral visual field) is intact. AMD cannot be cured but there exist treatments that will stabilize it or slow down its evolution.


Due to diabetes, the fine web of blood vessels in the retina may be clogged entailing a local loss of the ability of fine visual discrimination. The risk of visual deficiency increases when diabetes is not properly controlled. A good follow-up of the diabetes and a good ophthalmic care are very important if one is to make good evaluation of the impact of the disease. The screening of this disease is greatly advised during the information and awareness campaigns organized by Nadi al Bassar.


Glaucoma is an eye disease which affects mainly people over 45. It is caused by a rise of the ocular pressure resulting in damage to the optic nerve (which sends visual information to the brain) and the visual field (vision area).
Glaucoma is unfortunately incurable but, thanks to an early screening, its evolution can effectively be stopped, whence the importance of the information and screening campaigns organized by Nadi el Bassar in Tunisia.


Retinitis pigmentosa is a generic term which designates different genetic pathologies that affect the retina. These diseases are characterized by the degeneration of the cells (cone or rod) that are responsible for vision. Note that retinitis pigmentosa is the primary cause of hereditary blindness in developed countries. About 4.000 people are apparently suffering from it.
Although retinitis pigmentosa is incurable, there exist a number of treatments for it.
Today, scientists are seriously considering gene therapies.
In order to improve affected people’s daily life, Nadi al Bassar can pay for the apparatuses and thus contribute to their better integration in society.

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10th December 2005
Prize of the President of the Republic for World Solidarity of 2005

4th-5th MARCH 2006

6th December 2008
50th Anniversary of the Tunisian Medical Board : Nadi Al Bassar Medal

16th-19th October 2010
Congress of the American Academy of Ophthalmology - Chicago (USA) / International Blindness Prevention Award

15th-17th December 2010
II International Symposium on Low Vision Rehabilitation and Visual Ability / BIETTI INTERNATIONAL AWARD

1st-2nd July 2011
Prize of the Mauritanian Society of Ophthalmology

29th-30th June 2011
Reception organized by the Islamic Bank of Development / Award Nadi Al Bassar, Jeddah, Saudi Arabia

10th-13th December 2012

31st May 2013
Prize of the Egypt/Tunisian Fraternity Association

1st-6th April 2014
International Ophthalmology Congress – Tokyo Japan / G.H.O Prize Naumann Award for the Leadership in Global Eye Care