Which result should a nurse expect if a 4-year-old child’s visual acuity test is normal for the child’s developmental age?
10/10
20/20
20/40
40/40
The Correct Answer is C
Visual acuity refers to the clarity or sharpness of vision. Visual acuity improves with age, reaching 20/20 by approximately age 6–7. Early detection of vision problems is important to prevent conditions like amblyopia, which can be treated more effectively when caught early.
Rationale for correct answer:
3. At age 4, 20/40 vision is developmentally normal. This means the child can see at 20 feet what a person with perfect vision sees at 40 feet. It reflects typical visual development at this age.
Rationale for incorrect answers:
1. 10/10 is not a standard measurement in vision testing and is not used clinically in the U.S.
2. 20/20 vision is ideal but not expected for most 4-year-olds. While some may achieve it, it is more typical for older children, around 6 years and above.
4. 40/40 is not a valid or recognized measure of visual acuity. Standard measurements use 20 as the baseline.
Take home points
- 20/40 is normal visual acuity for a 4-year-old, with gradual improvement expected as the child grows.
- Routine vision screening begins in the preschool years to identify early issues.
- Nurses should recognize age-based norms to properly evaluate developmental progress and guide parental expectations.
- Referral is needed if visual acuity is worse than age norms or if there's evidence of strabismus or other visual concerns.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Preschool and early school-age children often do not yet fully grasp the concept of clock time. They understand time better when it is related to familiar daily routines like lunch, snack time, or nap time.
Rationale for correct answer:
3. Linking the mother's arrival to a concrete, familiar routine such as lunch time, helps the child feel more secure and better understand the timing. This approach is developmentally appropriate for kindergarten-age children, who typically cannot yet tell time or interpret abstract time intervals.
Rationale for incorrect answers:
1. “In about a half hour” is too abstract for most 5-year-olds. They do not have a reliable sense of what "30 minutes" feels like.
2. “When both hands on the clock reach 12” assumes the child knows how to read an analog clock, which most kindergarteners cannot do yet.
4. “At 12 o’clock noon” uses formal clock language, which is generally not meaningful to children at this stage of development.
Take home points
- Young children understand time in relation to routines, not numbers on a clock.
- Nurses should provide concrete, relatable explanations to reduce anxiety and promote understanding.
- Developmentally appropriate communication builds trust and emotional comfort, especially when a child is sick or upset.
- Avoid using abstract time language like minutes or hours when talking to young children.
Correct Answer is B
Explanation
Preschoolers typically exhibit unpredictable eating patterns. It’s important for parents to understand that occasional variations in intake are normal, and healthy children often balance their nutritional needs over the course of a day or week.
Rationale for correct answer:
2. Research supports that preschoolers have an innate ability to self-regulate food intake when offered a variety of nutritious options. They may eat little at one meal and make up for it at another. This anticipatory guidance reassures parents and prevents unnecessary anxiety or pressure around eating.
Rationale for incorrect answers:
1. Preschoolers need about 90–100 kcal/kg/day, not 110 kcal/kg. The average total intake is closer to 1,200–1,800 calories/day, depending on age, size, and activity, not 2,200 calories, which is more appropriate for adolescents or very active older children.
3. While it is true that fat intake should be moderated, dairy and meat are important sources of protein, calcium, iron, and other nutrients. Limiting them to twice a day may undermine adequate nutritional intake unless replaced with high-quality alternatives. Instead, the focus should be on choosing lean meats and low-fat dairy rather than reducing frequency.
4. Fruit juice is not a healthy alternative to milk. Juice lacks the protein, fat, and calcium found in milk and is high in sugar. The American Academy of Pediatrics recommends limiting juice to 4–6 ounces per day for preschoolers, and water or calcium-fortified plant-based milks (e.g., almond or soy) may be better alternatives for children who dislike cow’s milk.
Take home points
- Preschoolers often self-regulate food intake and should not be forced to eat when not hungry.
- Parental anxiety about eating can lead to power struggles; offering a variety of healthy choices is more effective.
- Nutrient-dense foods are more important than calorie quantity, quality over quantity matters.
- Limit juice consumption and avoid using it as a milk substitute; consider other calcium-rich options if milk is refused.
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