The so-called dilated eye exam is understood by many people to be a mere dilatation of the pupil, but this is only a superficial phenomenon. The essence of a dilated pupil is to relax the fatigue caused by prolonged overstrain of the eye muscles and to obtain the true refractive state of the eye. 1. In what cases do I need a dilated pupil? First of all, children under the age of 16 who are getting their first prescription must have their pupils dilated before getting their prescription. This is because they are likely to have pseudomyopia, (i.e. eye muscle tension caused by long hours of close study, but which can return to normal after a period of rest). If the pupil is dilated after the optometry, it will make the prescription more accurate. Secondly, children with hyperopia should also have their pupils dilated before they are fitted with glasses. Children with hyperopia have hidden farsightedness, and a significant number of them have amblyopia and strabismus. It is difficult to understand the true degree of hyperopia without a pupil dilatation examination, so it is possible that the degree will be less, which will not be enough to correct amblyopia and strabismus. 2. Is it dangerous for children to have dilated pupils? Many parents have had these concerns, but there is no need to worry about them. There is no risk of danger under the guidance of an ophthalmologist. Dilated pupils are good for children, as they can relax the fatigue of over-adjusted eye muscles. 3. What are the effects of dilated pupils on children? Dilated pupils only have a time effect on children. Generally speaking, slow dilatation takes longer (about 21 days), but it is also more effective. This is done by using the “atropine” method of eye spotting and then taking a “shadow check” to determine the final prescription. This method is more suitable for younger children and children with hyperopia and amblyopia. Rapid pupil dilatation is very quick (about 1 day). This method is suitable for children in general. It does not interfere with your child’s normal schooling and can be done in as little as two days (first day of dilatation, second day of retesting). In addition, children may feel photophobic and have difficulty seeing near objects after dilating their pupils. These symptoms are normal and will be fine after a period of rest. 4. How do I dilate my pupils? It is very easy to dilate the pupils. You just need to take your child to a professional eye doctor and everything will be solved. The doctor will take care of your child’s specific situation. For the sake of your child, please don’t spare any time or effort.