Table 2 Mean logarithm of the stray light value, log(s) and SD from the three measurements obtained on the five sessions taken on consecutive days

Patient	Intersession SD	Session 1		Session 2		Session 3		Session 4		Session 5
Patient	Intersession SD	Log(s)	SD	Log(s)	SD	Log(s)	SD	Log(s)	SD	Log(s)	SD
1	0.03	0.84	0.05	0.86	0.04	0.81	0.02	0.85	0.04	0.90	0.08
2	0.01	0.78	0.01	0.79	0.07	0.81	0.03	0.79	0.01	0.78	0.08
3	0.08	0.76	0.02	0.78	0.02	0.81	0.05	0.81	0.04	0.95	0.03
4	0.09	0.90	0.03	0.94	0.04	0.95	0.04	1.12	0.03	1.04	0.04
5	0.05	0.88	0.03	0.84	0.02	0.77	0.03	0.90	0.04	0.86	0.03