Table 1.

Iqbal’s Four Major Diagnostic Criteria for Accurate CVS diagnosis^2,3

Criteria	Origin	Type	Specification
Criterion 1	Self-assessment questionnaire	Subjective	One or more ocular complaints related to time of the screen-use
Criterion 2	Self-assessment questionnaire	Subjective	One or more extraocular complaints related to time of the screen-use
Criterion 3	Self-assessment questionnaire	Subjective	One or more complaint-attacks every month over the last 12 months
Criterion 4	Complete ophthalmic examination	Objective	Documenting ocular findings as dry eye disease, reduced visual acuity, refractive errors, conjunctival hyperemia, accommodation-convergence imbalance and/or mfERG screen-induced foveal dysfunction