Artificial tears can alter keratometry measurements in dry eyes patients
In a recent development, researchers have highlighted that Tear film - stabilizing eye drops prior to keratometry measurements influenced K-readings significantly, especially in dry eyes. The team further said that a time period of more than 5 minutes should be allowed to pass after instillation of eye drops. The higher the viscosity of the eye drops, the stronger the influence and the longer its persistence. The findings have been published in American Journal Of Ophthalmology.
The developments of advanced-technology intraocular lenses (IOLs) and new measuring devices have heightened expectations of visual outcome after cataract surgery. Dry-eye disease is multifactorial and causes an unstable tear film with an irregular surface. Symptoms include a burning sensation and blurred vision, and biomicroscopic signs like shortened tear breakup time, corneal and conjunctival fluorescein staining, and lid-parallel conjunctival folds. Artificial tears are often used to ameliorate the ocular surface for obtaining a precise measurement of the eye. However, there are anecdotal reports that usage of eye drops can alter the measurement.
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