. Author manuscript; available in PMC: 2012 Dec 1.

Published in final edited form as: Ophthalmology. 2011 Aug 27;118(12):2326–2329. doi: 10.1016/j.ophtha.2011.06.006

Table 1.

Percentage of eyes with astigmatism and high astigmatism at 4, 5, and 6 years postnatal age.

Refractive status		Treatment at high-risk prethreshold n/N^* (%)	Conventionally-managed high-risk eyes
Refractive status		Treatment at high-risk prethreshold n/N^* (%)	Total conventionall y-managed high-risk eyes n/N^* (%)	Treatment at threshold n/N (%)	Regressed, no treatment n/N (%)
Astigmatism greater than or equal to 1.00 Diopters	4 years	111/262 (42.4%)	112/239 (46.9%)	77/145 (53.1%)	35/94 (37.2%)
	5 years	124/255 (48.6%)	115/233 (49.4%)	79/141 (56.0%)	36/92 (39.1%)
	6 years	145/279 (52.0%)	138/257 (53.7%)	94/157 (59.9%)	44/100 (44.0%)
Astigmatism greater than or equal to 2.00 Diopters	4 years	47/262 (17.9%)	44/239 (18.4%)	30/145 (20.7%)	14/94 (14.9%)
	5 years	53/255 (20.8%)	52/233 (22.3%)	37/141 (26.2%)	15/92 (16.3%)
	6 years	63/279 (22.6%)	65/257 (25.3%)	47/157 (29.9%)	18/100 (18.0%)

See Results Section for early treatment (ET) and conventional management (CM) eyes with unavailable refractive error data.