The situation of large pupil distance in the processing of spectacles may be caused by inaccurate measurement of the pupil distance or errors in the processing.
Pupillary distance is a very important parameter when fitting glasses, it refers to the distance between the optical centers of two lenses, which must be equal to the distance between the pupils of both eyes of the patient, otherwise the patient will easily experience dizziness, distortion and blurring of vision after wearing them.
Before processing eyeglasses, a pupilometer will be used to measure the patient’s pupil distance, if the results obtained during the measurement are inaccurate, it will lead to errors and large pupil distance out of the eyeglasses processing. If the measurement is inaccurate, it will lead to an error in the pupil distance of the eyeglasses.
If the eyeglasses are reviewed and the pupil distance is inaccurate and obviously large, the eyeglasses should be rechecked and the patient should not wear inappropriate eyeglasses.
It is recommended that patients go to the ophthalmology department of a regular hospital for optometry examination and measurement of pupillary distance, and then the doctor will issue a prescription to go for glasses fitting.