II. Indications
- Decreased Visual Acuity in children
- Differentiates Refractive Error from other defects
- Example: Amblyopia
III. Background
- Pinhole restricts light to the center of the Cornea
- Corneal center passes light through pupil to Retina WITHOUT Refraction
IV. Technique
- Check Vision initially with eye charts per age
- See Pediatric Vision Screening for appropriate tests
- Perform Pinhole Test if Vision <20/20
- Test each eye individually
- Child repeats eye chart while looking through pinhole
V. Interpretation
- Pinhole significantly improves Vision
- Suggests Refractive Error
- Pinhole does not improve Vision
- Suggests Amblyopia or other non-refractive cause