Table 1. Demographic data and mean ocular biometric parameters in Portuguese population.

Parameter	Mean ± SD (range)
Eyes (n)	6,506
Patients (n)	6,506
Age (years-old) Range	69 ± 10 (44–99)
Females, n (%)	3,721 (57.2%)
Right eyes, n (%)	1,678 (51.6%)
	Total	Males	Females
Axial length (mm) ± SD Range	23.87 ± 1.55 (19.8–31.92)	23.99 ± 1.47 (20.03–31.92)	23.68 ± 1.46 (19.8–29.99)
Mean keratometry (D) ± SD Range	43.91 ± 1.71 (40.61–51.14)	43.46 ± 1.11 (40.93–51.14)	44.20 ± 1.29 (40.61–49.93)
Mean corneal astigmatism (D) ± SD Range	1.08 ± 0.84 (0–7.58)	1.09 ± 0.92 (0–7.58)	1.12 ± 0.86 (0–6.27)
Anterior chamber depth (mm) ± SD Range	3.25 ± 0.44 (2.04–5.28)	3.30 ± 0.40 (2.06–5.42)	3.14 ± 0.43 (2.04–4.99)
Lens thickness (mm) ± SD Range	4.32 ± 0.49 (2.73–5.77)	4.35 ± 0.49 (2.75–5.77)	4.38 ± 0.41 (2.73–5.42)
Corneal diameter (mm) ± SD Range	12.02 ± 0.46 (10.50–14.15)	12.03 ± 0.43 (10.51–14.15)	11.98 ± 0.49 (10.50–14.09)