Age and Positional Effect on the Anterior Chamber Angle: Assessment by Ultrasound Biomicroscopy

Table 1

Comparing positions at each location in each cohort.

	Sitting	Supine	Sit − Supine§
Younger^†
Superior	41.3 ± 5.7*	41.5 ± 4.4	−0.2 ± 5.7
Inferior	40.6 ± 6.6	40.5 ± 3.3*	0.1 ± 7.1
Superior − Inferior^‡	0.7 ± 7.0	1.0 ± 4.7
Older
Superior	36.8 ± 4.5	38.3 ± 5.2	−1.5 ± 3.6
Inferior	38.1 ± 4.4	36.2 ± 5.4	1.9 ± 3.6
Superior − Inferior^‡	−1.3 ± 3.4	Narrower by; 2.1 ± 3.0**

†Comparing mean ACA between age cohorts using two sample 𝑡-test.
^‡Comparing mean ACA between superior and inferior quadrants using paired 𝑡-test.
§Comparing mean ACA between seated and supine positions using paired 𝑡-test.
*Statistically significantly different between age cohorts.
**Statistically significantly different between superior and inferior quadrants within older cohort.