Preferred practice guidelines for retinopathy of prematurity screening during the COVID-19 pandemic

Table 2 Suggested follow-up schedule for retinopathy of prematurity during the coronavirus disease 2019 pandemic

Finding in either eye with respect to zone	Next follow up	Comment
Immature retina in zone 3 and zone 2 anterior	3-4 wk or more	If the PMA is less than 34 wk/< 1500 grams/sick and admitted infant, consider a closer follow-up
Zone 3 and Zone 2 anterior disease	3-4 wk	Spontaneously regressing ROP can be watched
Zone 2 Posterior disease	2 wk	Unless associated with treatment requiring features (see below)
Zone 1 disease	1 wk or treat	Have a low threshold for treatment
Pre-plus	Consider early treatment or early follow-up if pupil does not dilate well and media is not clear	Individualize for each case based on the tempo of disease and PMA
Pre-plus	With good pupillary dilatation and clear media and other low risk features	Can delay the next screening by an additional 1 wk from the current guidelines

PMA: Post menstrual age; ROP: Retinopathy of prematurity.