Normal vision for a three-year-old child

The vision of a three-year-old baby is close to that of an adult, with a normal value between 4.8 and 4.9. In addition, the accommodation ability of the eye lens is relatively poor, and farsightedness may occur. At this time, we should protect the child's eyesight and let the child eat more calcium and foods containing vitamin A. To protect the eyesight of three-year-old babies, we should start with diet and reduce children's exposure to electronic devices.

What is the normal vision of a 3-year-old child?

The normal vision of a 3-year-old child should be 0.7 to 0.8 (that is, 4.8 to 4.9). The eyeball of a newborn is almost perfectly round in appearance, and the adjustment ability of the lens and ciliary muscle is poor. After parallel light passes through the refractive system, the image falls behind the retina, which often manifests as farsightedness.

What should 3-year-old children eat to protect their eyesight?

1. Calcium-containing foods. Dietary calcium deficiency can easily cause vision damage. Lean meat, milk, eggs, beans, fish and shrimp, kelp, vegetables, oranges, etc. are relatively rich in calcium, but the calcium content in food is low. Infants and young children aged 0 to 3 years old need 400 to 800 mg of calcium per day. The calcium content of milk and dairy products is second to none among human foods, with more than 1 mg of calcium in every 1 ml of milk. Calcium is also easily absorbed by the human body, so it is important to develop the habit of giving milk to infants and young children every day.

2. Foods containing vitamin A. Foods containing vitamin A can prevent the conjunctiva and cornea from drying out and degeneration, and can prevent and treat "dry eyes". Vitamin A can also enhance the eyes' ability to adapt to dark environments. When vitamin A is severely deficient, it is easy to suffer from night blindness. Raw animal foods rich in vitamin A include pork liver, chicken liver, egg yolk, milk and goat milk, etc.; plant foods include carrots, spinach, leeks, green peppers, sweet potatoes, as well as oranges, apricots, persimmons, etc.

3. Foods containing vitamin C. Vitamin C is one of the components of the lens of the eye. Lack of vitamin C can easily cause the lens to become cloudy, leading to cataracts. Give young children more foods containing vitamin C, such as vegetables and fruits, which have the highest content. Green peppers, cucumbers, cauliflower, Chinese cabbage, fresh dates, and raw pears have the highest content.

What is introduced above is the normal vision of 3-year-old children. After reading the above introduction, you should have a certain understanding that the normal vision of three-year-old children is around 4.8 to 4.9. If you want your child’s eyesight to improve, you should let your child eat more foods rich in vitamins and calcium, so that your child’s vision can be maintained at a normal level.