**Core Concept**
In pediatric ophthalmology, accurately determining refractive errors in young children can be challenging due to their inability to communicate effectively. The preferred method for assessing refractive errors in infants and toddlers involves a technique that does not require verbal responses.

**Why the Correct Answer is Right**
The retinoscopy test is a commonly used method for assessing refractive errors in children under the age of 3. This technique involves shining a light into the child's eye and observing the reflection off the retina. The movement and behavior of the reflection indicate the presence of refractive errors. The retinoscopy test is particularly useful in young children because it does not require them to fixate on a target or respond verbally, making it a more reliable method for assessing their refractive status.

**Why Each Wrong Option is Incorrect**
* **Option A:** The cover test is used to assess for strabismus (eye misalignment) by covering one eye and then the other, but it does not provide information about refractive errors.
* **Option B:** The autorefraction test is a more advanced method that uses automated equipment to measure refractive errors, but it is not typically used in young children due to their small size and the need for them to remain still.
* **Option C:** The near vision chart test is used to assess visual acuity in older children and adults, but it is not suitable for young children who cannot read or respond verbally.

**Clinical Pearl / High-Yield Fact**
The retinoscopy test is a crucial tool in pediatric ophthalmology, allowing clinicians to accurately diagnose refractive errors in young children and provide appropriate treatment to prevent long-term vision problems.

**Correct Answer: C. Retinoscopy test.**