The optician is usually unable to measure the hyperopia reserve, and children need to have an astigmatism test to determine the prescription, but astigmatism medication is a prescription drug and may not be available in the optician’s store. If children want to measure their hyperopia reserve, they need to have an astigmatism test, which requires the use of astigmatic drugs, such as compound tropicamide eye drops and atropine eye drops, etc. Opticians usually do not have these prescription drugs, so they may not have them. These prescription medications are generally not available in optical stores, so there may not be a way to accurately measure a child’s hyperopia reserve. Hyperopia reserve refers to the number of degrees of physiologic hyperopia that a pediatric patient currently has, because there is usually about 300 degrees of physiologic hyperopia at birth, which gradually decreases with age. Before the physiological hyperopia disappears, this part of the prescription is called the hyperopic reserve. A fast disappearance of the hyperopic reserve indicates a high likelihood of myopia formation in the future. It is recommended that children who need to measure their hyperopia reserve should go to a regular hospital and have it measured correctly under the guidance of a doctor.