Interocular symmetry of the peripapillary choroidal thickness and retinal nerve fibre layer thickness in healthy adults with isometropia

Table 2 Measurements of peripapillary retinal nerve fibre layer thickness and choroidal thickness for right and left eyes and interocular difference

Parameters	Right eye		Left eye		Difference (right – left)				P-value*
Parameters	Mean	SD	Mean	SD	Mean	SD	Min	Max	P-value*
RNFL thickness
TS, μm	156.6	19	154.1	20.5	2.5	15.2	−47	35	0.131
NS, μm	120.3	19.7	133.9	21.3	−13.6	15.7	−56	27	<0.001
N, μm	71.6	15	69.3	14.2	2.3	10.6	−40	27	0.051
NI, μm	122.9	22.7	122.2	23.4	0.7	17.9	−57	46	0.737
TI, μm	160.7	20.7	162.2	20.7	−1.4	12.3	−37	28	0.283
T, μm	82.3	11.9	80.1	13.2	2.2	8.7	−23	22	0.024
Average, μm	119.1	11.1	120.3	11.2	−1.2	5.4	−24.1	11.8	0.034
Choroidal thickness
TS, μm	210.9	57.5	215.8	56.9	−4.9	32.8	−72	73	0.168
NS, μm	210.6	56.1	214.7	60	−4.1	33.5	−120	87	0.26
N, μm	198.6	58.3	202.3	62.6	−3.6	32.2	−118	94	0.299
NI, μm	175.1	61	176	58.8	−0.9	31	−108	70	0.792
TI, μm	176.4	61.1	175.4	58.9	1	33.3	−119	72	0.792
T, μm	208.3	65.1	208.6	62.7	−0.3	29.9	−85	73	0.917
Average, μm	196.7	55.7	198.8	55.8	−2.2	24.2	−93.9	49	0.411
SFCT, μm	353.6	80.2	359.1	81.6	−5.5	45.8	−109	124	0.274

SD standard deviation, RNFL retinal nerve fibre layer, TS temporal superior quadrant, NS nasal superior quadrant, N nasal quadrant, NI nasal inferior quadrant, TI temporal inferior quadrant, T temporal quadrant, SFCT subfovealchoroidal thickness
*P-value < 0.05 was considered significant

ISSN: 1471-2415