الفهرس 
AcknowledgementOnly 14 pages are availabe for public view
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Abstract
Fresh vegetables are a popular food consumed daily by different age stages of rich and poor people for their low prices and pleasant flavor. In spite of the cheap price of these vegetables; they have high nutritive value for their high content of vitamins, pigments especially lutein and fiber, calcium, potassium, magnesium and iron. Different vegetables can be purchased around the year with low price. Therefore in Egyptian diet vegetables can be considered as one of the main sources of vitamins and minerals beside the other sources Vegetables provide most of the carotenoids in the human diet. lutein, lycopene, and zeaxanthin are the most common dietary carotenoids. Some foods are considered good sources of lutein and zeaxanthin like kale, parsely, turnip greens, spinach, collard greens, watercress, garden peas, broccoli, egg, carrot and avocado The last years the interesting of eye diseases increases and the relationship intervention with nutrients and the common diseases well as cataract. The aim of this study focus on the concern of the effect of lutein on cataract. Therefore, this research was designed to study the use of certain varieties of vegetables (spinach, leek, parsley and watercress), the most popular and rich in lutein and its relationship to reduce the incidence of cataract. Then, lutein had determined in these vegetables, biological experiments designed. At the end of experiment (one month) blood samples were withdrawn, The eyes were enucleated, lenses were excised and it was determined lutein bioavailability, different parameter. In the end microscopic and histological tests. It could be concluded that There is a relationship between lutein consumption and decreasing the risk of cataract. We must eat the fresh vegetables rich in vitamins specially lutein. 10 mg lutein daily was effective dose for the beneficial effects of lutein on cataract. Finally, it could be concluded that watercress, spinach, parsley and leek provide high content of lutein there were (12.72, 11.87, 11.03 and 7.30 mg /100g), respectively. Moreover these blends could be purchased with low price and available throughout the year.