Expatriates with international private medical insurance may wish to consume products that promote eye health, in order to maintain healthy vision.
International Glaucoma Association head of marketing and PR Sarah Zerbib noted foods with high levels of Omega 3 and Vitamin D can promote sight.
These include leafy or colourful vegetables such as peppers, berries, tomatoes, carrots and spinach, as well as oily fish.
Sunglasses can also protect people's eyes from UV rays and although research has not revealed any impact on glaucoma, sufferers note "they can help reduce glare", she added.
The expert explained this condition can affect men and women of any age, but it becomes more commonplace when people are over 40.
Internationally, around 284 million people are thought to be visually impaired, with 80 per cent of these cases caused by preventable or treatable conditions, Vision 2020 asserts.
Furthermore, 90 per cent of blind individuals are inhabitants of the developing world, the organisation claims.