Developing a Measure to Quantify Ocular Pain Postoperatively: The Adaptation of the Ocular Pain Assessment Survey

Table 2

The Cronbach’s alpha values of each subscale. The final section on pain relief is not included since it is only tested in the late-postsurvey.

Subcategories	Cronbach’s Alpha Value
	No. of items	Presurvey	Postsurvey	Late-postsurvey
Overall	22	0.948	0.931	0.900
1. Eye pain severity	6	0.925	0.789	0.734
2. Noneye pain severity	3	0.906	0.872	0.855
3. Quality of life	7	0.910	0.942	0.852
4. Exacerbating factors	2	0.624	0.816	0.640
5. Associated factors	4	0.788	0.895	0.623