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Br J Ophthalmol 81:12-15 doi:10.1136/bjo.81.1.12
  • Original Article

Cryotherapy and laser treatment for acute retinopathy of prematurity: refractive outcomes, a longitudinal study

Table 4

Prevalence of astigmatism with means and axes for cylindrical error >1.00 at 3 and 12 months following cryotherapy or laser

Cryotherapy (n=34) Laser (n=28)
3/12 12/12 3/12 12/12
Astigmatism (D)
>1 13 (38%) 12 (35%) 9 (32%) 14 (50%)
Mean (D) (range) 2.37 (1.25 to 5.00) 2.04 (1.25 to 4.50) 2.167 (1.23 to 3.5) 1.60 (1.25 to 3.00)
Axis
 90 8 7 5 6
 180 3 4 3 5
Oblique 2 1 1 3

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