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. 2019 Sep 12;14(9):e0213956. doi: 10.1371/journal.pone.0213956

Table 3. Data distribution according to the pterygium clinical presentation (atrophic and fleshy).

Atrophic Fleshy
Mean ± SD 95% CI Mean ± SD 95% CI P value
Age (years) 58.5 ± 13.3 47.3–69.6 52.8 ± 10.8 49.5–56.1 0.26
K1 42.7 ± 3.3 40–45.5 43.2 ± 2.5 42.3–44 0.40
K2 46.2 ± 5.2 41.8–50.6 45.7 ± 1.8 45–46.2 0.40
Corneal astigmatism (pterygium) 3.5 ± 2.7 1.1–5.8 2.4 ± 2.4 1.6–3.2 0.18
NITBUT 9.5 ± 7.1 3.5–15 10 ± 4.5 8.7–11.5 0.36
Conjunctival hyperemia 2.3 ± 0.1 2.5–2.9 2.7 ± 0.7 1.8–2.9 0.005*
Tear meniscus height 0.4 ± 0.2 0.2–0.6 0.3 ± 0.1 0.31–0.39 0.25
Red eye (0–10) 9 ± 1 7.7–10 7.7 ± 2.8 6.6–8.8 0.82
Irritation (0–10) 7 ± 2 4.5–9.4 6.8 ± 2.5 5.9–7.8 0.51
Tearing (0–10) 6.4 ± 2.6 3–9.6 5.8 ± 3.8 4.4–7.3 0.92
Blurred vision (0–10) 8.8 ± 1 7.4–10 6.7 ± 3.4 5.4–7 0.25
Aesthetics (0–10) 7 ± 2.9 3.3–10.6 8 ± 3 6.8–9 0.34