Nevertheless,
Diet rich omega 3 fatty:
A diet rich in omega 3 fatty acids. Meanwhile, present mainly in fish oils, could help prevent the development of myopia in children according to a work carried out by researchers from Hong Kong and published in the British Journal of Ophthalmology. Moreover, According to this study. However, high consumption of saturated fats, present in foods such as butter, palm oil and red meat, would have the opposite effect, and increase the risk of this condition.
Omega 3 poly-insaturated fatty acids (AGPI Ω-3). However, exclusively brought by food, would prevent from the literature, several chronic eye conditions, including ocular and dmla. Additionally, However, there was not yet formal evidence of their effectiveness against myopia.
Doctors of the ophthalmology services of several Hong Kong hospitals have gathered data on 1. In addition, 005 Chinese children aged 6 to 8 years, recruited randomly in diet rich omega 3 fatty the context of the Hong Kong Children Eye Study study, which follows the evolution of ocular conditions and potential risk factors.
Children’s sight was clinically evaluated, and their eating habits have been the subject of a questionnaire fulfilled with their parents. Moreover, This document included 280 foods classified into ten groups: bread/cereals/pasta/rice/noodles. Moreover, vegetables and legumes; Fruits; meat ; fish ; eggs; milk and dairy products; drinks; En-Cas/fat/oils; and soups.
From the responses to this questionnaire. Nevertheless, the authors estimated the energy intake, carbohydrates, proteins, total lipids, saturated fats, mono-insaturated fats, poly-insaturated fatty acids, cholesterol, iron, calcium, vitamins A and C, fibers, starch, sugar and nutrients. The time spent by children outside for leisure. sports activities, to read and write, and in front of the screens was calculated from the answers to another questionnaire.
An effect on the blood flow in the choroid
Just over a quarter of children (276; diet rich omega 3 fatty 27.5 %) were myopic. There was a significant association between a high food intake in omega 3 fatty acids and a lower risk of myopia. Most myopies originate an axial length. that is to say the distance between the top of the cornea and the central region of the cornea (or Fovéa), too large. This axial length was the longest in the 25 % of children with the lowest food intake in omega 3. after taking into account several confusing factors such as age, sex, body mass index, time spent working closely and outside, and parental myopia. Conversely, the axial length was the shortest in the 25 % of children with the highest food in omega 3.
The researchers also used the measurement of the ocular refraction carried out after blocking the power to accommodate the. eye by administration of a cycloplegic. This examination makes it possible to measure the diet rich omega 3 fatty refractive error and the degree of myopia. The highest values were found in children consuming the least omega 3.
At the same time. the authors noted symmetrically opposed results for the 25 % of children with the highest contribution to saturated fats, compared to the 25 % of those with the lowest contribution. No other nutrients were associated with one or the other of these parameters or myopia.
An explanation for these data would be the propensity of omega 3 fatty acids to increase blood flow in the choroid. a vascular layer of the eye responsible for the supply of nutrients and oxygen, thus preventing scleral hypoxia, that is to say the oxygen deficit in the white of the eye which constitutes a key factor in the development of myopia.
The authors conclude that “This study provides proof in humans (previous studies were fully done in the animal note) diet rich omega 3 fatty That a higher food intake in omega 3 poly-insaturated fatty acids is associated with a shorter axial length. a lower refraction, thus stressing their potential protective role against the development of myopia. »»
Diet rich omega 3 fatty
Data to confirm
Observational. the study published in the British Journal of Ophthalmology does not make it possible to establish causal factors. Food frequency questionnaires are based on memory and provide only snapshot at the time of the diet. Nor is there objective evidence of nutritional intake from blood samples. It also remains to prove that these results can be generalized to other ethnic groups with different lifestyles.
The global prevalence of myopia is increasing. especially in East Asia and in particular in Hong Kong, and it is planned that around half of the world’s population will be affected by 2050, note researchers who believe that changes in eating behavior could diet rich omega 3 fatty partly explain this increase. But they are not the only ones: an excessive screens. insufficient time spent outside could also be involved, they explain.
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