(1) Determines the need for treatment

Table 52.1 Follow-up Examination Schedule

Findings Follow-up

Stage 1–2 in Zone 1 1 wk or less

Stage 3 in Zone II

Immature retina (no ROP) in Zone I 1–2 wk

Stage 2 in Zone II

Regressing ROP in Zone I

Stage 1 in Zone II 2 wk

Regressing ROP in Zone I

Immature retina (no ROP) in Zone II 2–3 wk

Regressing or Stage 1–2 in Zone III

From Section on Ophthalmology, American Academy of Pediatrics, American

Academy of Ophthalmology, American Association for Pediatric Ophthalmology and

Strabismus. Screening examinations of premature infants for retinopathy of prematurity. Pediatrics. 2006;117:572. Erratum Pediatrics 2006;118:1324.

Fig. 52.1. Scheme of retina of right eye (RE)

and left eye (LE), showing zone borders and clock

hours employed to describe location and extent of

retinopathy of prematurity. (From Committee for

Classification of Retinopathy of Prematurity. An

international classification of retinopathy of prematurity. Arch Ophthalmol. 1984;102:1130, with

permission.)