Timing of first eye examination for retinopathy of prematurity based upon gestational age at birth*
Timing of first eye examination for retinopathy of prematurity based upon gestational age at birth*
Gestational age at birth (weeks)
Chronologic age at initial examination (weeks)
22¶
8
23¶
7
24
6
25
6
26
4
27 to 30
4
31 to 32Δ
4
* The above schedule detects prethreshold ROP with 99% confidence, usually well before any required treatment. ¶ Because of the small numbers of survivors in these gestational categories, this guideline should be considered tentative rather than evidence-based. Δ If necessary.
