====== Guidelines for Automated Preschool Vision Screening ======

====Failure Criteria for Refractive Amblyopia Risk Factors====
^ Age, months  ^ Astigmatism (D)  ^ Hyperopia (D)  ^ Anisometropia (D)  ^ Myopia (D)  ^
| 12-30        | > 2.0            | >4.5           | >2.5               | > -3.5      |
| 31-48        | >2.0             | >4.0           | >2.0               | > -3.0      |
| 48           | >1.5             | >3.5           | >1.5               | > -1.5      |

====Failure Criteria for other Amblyopia Risk Factors====
^ Age  ^ Nonrefractive risk factors                                  ^
| All  | Manifest strabismus > 8 Prism Diopters in primary position  |
| All  | Media Opacity > 1 mm | 

====References====
  - [[https://www.clinicalkey.com/#!/content/playContent/1-s2.0-S1091853112003989?returnurl=null&referrer=null| Donahue SP, et al. Guidelines for automated preschool vision screening:  A 10-year, evidence-based update. 2013;17(1):4-8]] [[https://1drv.ms/b/c/31d83ae8e55e0542/ESBqyk28oTJLuK4ZUEZGC4YBTpHDUP7T97m-ONp-dAYK3w?e=1Uw5w9|_]]
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{{tag>guidelines}}