Increase and decree in eyesight capability usually is connected to a medical condition and a rapid increase of degree in vision is associated with Hypertension, Diabetes etc.
In case one has a concern over a progressive eyesight issue one needs to have a good diet which is good for the whole body per say. some insights are as under:
You must agree that Maintaining an optimal caloric balance over time is important to maintaining healthy weight. This optimal intake requires persons to decrease their typical calorie consumption while engaging in physical activity. Calculating total energy expenditure for recommended daily caloric intake is based on age, sex, weight, and activity level and is important of diet based goals.
The recommended dietary sodium intake for the general population is less than 100 mEq/day (2.3 g of sodium or 6 g of sodium chloride). Low sodium intake is associated with decreased risk of cardiovascular events, including death.
Most individuals who consume a balanced diet do not need to take vitamin supplements.
The main food groups generally consist of fruits/vegetables, grains, dairy products, and protein-rich foods.
Individuals should be counseled to consume five or more servings of fruits and/or vegetables daily. Fruits and vegetables are a rich source of fiber, and fruit/vegetable consumption is inversely associated with risk of coronary heart disease (CHD), stroke, and mortality.
Individuals should be advised to replace refined grains (eg, white bread, white rice, refined and sweetened cereals) with whole grains (eg, whole-wheat bread, brown rice, whole-grain cereals or oatmeal), which have a higher content of fiber and other nutrients. Refined grains are associated with long-term weight gain. Whole grains are associated with a lower risk of heart disease, diabetes, and premature mortality.
Trans fatty acid consumption should be kept as low as possible by limiting foods such as partially hydrogenated oils (eg, stick margarine).
Individuals should be advised to avoid red and processed meats and counseled to eat a variety of healthy protein-rich foods, including seafood, lean meat such as poultry, eggs, beans, peas, soy products, and unsalted nuts and seeds. Consumption of red meats and processed meats is associated with increased mortality, while consumption of white meat is associated with decreased mortality.
With you a healthy life ahead.
Source: Puneet Chandna’s answer to What food should be included in our diet to increase our eye sight? – Quora