When we began using dry eye point-of-care testing preoperatively for all surgical patients, we found that the problem exists in many more patients than we initially presumed. Many patients can have no symptoms, but tests show a tear osmolarity of 320 mOsms/L, a positive MMP-9 test or other positive results for dry eye disease.
As a result of dry eye diagnosis and intervention before surgical measurements, we have seen more accurate and consistent IOL power calculations. We also have been relieved to find that complaints about postoperative dry eye are now rare for all our surgical patients. Patients understand ocular surface disease and reliably fulfill their role in controlling it long term.