Table 2.

 Mean (SD) refractive error and cylinder axis range

		All groups	Anisometropia	Strabismus	Mixed
Amblyopic eye	Mean sphere	4.0 (2.1)	3.8 (1.9)	3.65 (1.50)	4.50 (2.4)
	Range sphere	+9.00 to −4.00	+7.50 to −4.00	+6.50 to +0.75	+9.00 to −4.00
	Mean cylinder	−0.91 (1.0)	−0.98 (1.2)	−0.90 (0.98)	−1.00 (0.77)
	Range cylinder	0 to −3.50	0 to −3.50	0 to −3.50	0 to −2.50
Fellow eye	Mean sphere	2.7 (1.8)	1.99 (1.46)	3.33 (1.51)	2.85 (2.04)
	Range sphere	+6.50 to 0	+6.50 to 0	+6.00 to +0.75	+6.50 to 0
	Mean cylinder	−0.45 (0.62)	−0.30 (0.33)	−0.64 (0.99)	−0.45 (0.62)
	Range cylinder	0 to −3.00	0 to −3.00	0 to −3.00	0 to −1.50