Pediatric eye examination
| Age | Type of test | Example of test
|
| 3-12 months | Preferential looking | Keeler cards
|
| 1-3 years | Vanishing optotypes (looking and/or
naming)
|
Cardiff cards |
| 2.5 – 4 years | Single or crowded letter or picture
matching
|
Sheridan Gardner at 3 or 6 metres logMAR or Kay crowded pictures
|
| 4-6 years | Crowded letter matching or naming | logMAR crowded, Snellen, Sonksen
Silver
|
Approximate visual acuity according to age
| Age Approximate
|
Snellen acuity |
| Birth
|
6/300 |
| 1 month
|
6/200 – 6/90 |
| 3 months
|
6/90 – 6/60 |
| 6 months
|
6/36 – 6/30 |
| 9 months
|
6/24 |
| 1 year
|
6/18 |
| 18 months
|
6/12 |
| 2 years
|
6/12 – 6/9 |
| 3 years
|
6/9 – 6/6 singles |
| 4 years
|
6/9 – 6/6 crowded |
| 5 years | 6/6 – 6/5 |
Tests to measure near acuity
| Age | Type of test | Example of test | Near acuity at 25cm
|
| 2-3 years | Picture Naming | Reduced Kay pictures | 6/12 – 6/6
|
| 3-5 years | Matching singles | Reduced single Snellen | 6/9 – N5
|
| 4-6 years | Naming reduced letter
charts
|
Snellen, logMAR | 6/6 or N5
|
| 5 years onwards | Reading | McClure reading book | 6/6 or N5
|
