Table 4. OSDI in Eyes with Pterygium vs. Controls.

All four studies reported an OSDI that was statistically significantly higher in pterygium eyes vs. controls.

Year	Author	n = No. patients, No. eyes	Results
2019	Li et al.(17)	n = 108, 108	Higher in pterygium†
2017	Ye et al.(19)	n = 80, 80	Higher in pterygium†
2017	Wu et al.(22)	n = 99, 99	Higher in pterygium†
2014	Hashemi et al.(26)	n = 1008, 1008	Higher in pterygium†

^†Statistically significant