Dilatation is not necessary for every eye examination. For children with refractive errors, dilation should be performed for the first eye exam, with subsequent eye exams determined on a case-by-case basis, while dilation is usually not required for adults with refractive errors.
Pupil dilation is a method of examination in which ciliary muscle spasms are relieved by the use of ciliary muscle paralyzing drops, such as atropine drops and compound tropicamide drops, in the eye prior to the eye examination to eliminate the effect of eye adjustment on the results of the eye examination, thus making the results of the eye examination more accurate.
Because of the high incidence of ciliary spasm, children should have their pupils dilated for the first eye test, and then decide whether to dilate the pupils according to the interval between eye tests and the increase in the number of diopters, so not every eye test needs to dilate the pupils.
Adult refractive error patients are not prone to ciliary muscle spasm, so there is no need to dilate the pupil before the optometry.
Patients with refractive errors should go to the hospital in time for examination, and the doctor will decide whether to dilate the pupils according to the patient’s condition.