TABLE 3.

Interocular asymmetry at the last visit and comparison between bilateral and unilateral high myopia.

Variables	Overall cohort (N = 84)	Bilateral high myopia (n = 62)	Unilateral high myopia (n = 22)	P-value*
Interocular SE difference (| ΔSE|), D	2.11 ± 2.95 [0.88 (0.50–2.19)] (n = 83)	1.17 ± 1.29[0.81 (0.37–1.50)]	4.89 ± 4.46[4.37 (1.13–6.00)] (n = 21)	<0.001
Anisometropia (| ΔSE| ≥ 2.0D), n/N (%)	23/83(27.7%)	9/62(14.5%)	14/21(66.7%)	<0.001
Interocular AL difference (| ΔAL|), mm	0.56 ± 0.78[0.25 (0.10–0.64)] (n = 66)	0.37 ± 0.48[0.22 (0.10–0.45)] (n = 52)	1.27 ± 1.25[0.95 (0.31–1.95)] (n = 14)	0.002
Interocular LogMAR difference	0.16 ± 0.30[0.08 (0.00–0.12)] (n = 77)	0.14 ± 0.29[0.04 (0.00–0.12)] (n = 58)	0.24 ± 0.32[0.10 (0.00–0.24)] (n = 19)	0.128

| Δ| represents the absolute difference between both eyes at the last follow-up (e.g., | ΔSE| = | SE_R − SE_L|). Bilateral high myopia: both eyes meet SE ≤ −6.00D at the last follow-up; unilateral high myopia: only one eye meets this criterion. For comparisons between groups of continuous variables: Mann–Whitney U test; for categorical variables: Fisher’s exact test. The Spearman ρ of | ΔSE| and | ΔAL| was 0.629, P < 0.001 (n = 66).