Prerequisites for pain assessment

Shetty et  al.1 evaluated the effect of a bandage contact lens soaked in ketorolac ophthalmic 0.45% solution on pain modulation in patients having transepithelial photorefractive keratectomy (PRK). The authors did not mention whether the patients in the treatment group and no treatment group were masked. It is known that when patients are aware of the allocation to an experimental intervention or to a comparator including a placebo, they experience, report, or record greater benefits than when they are unaware of the assignment.
Source: Journal of Cataract and Refractive Surgery - Category: Opthalmology Authors: Tags: Letter Source Type: research