Pupil Distance (PD) is measured in millimetres and even a slight variation can cause a
number of vision and eye health problems due to inacurately fitting of Distance Vitror (DV). PD must
be paralel to DV, therefore PD measurements must be committed throughtly. It requires
comprehensive knowledge and technical skill. With the popularity of buying glasses online, a number
of websites have come up with do-it-yourself measurements or apps that will take this measurement
for you. The problem is that these are not scientifically accurate measurements and are not being
performed by professionals. There is a large margin of error and buyers could end up with glasses
that hurt their vision—not correct it.This research is aimed to show ideal procedure that must be
committed in producing glasses to avoid inacurate PD measurement. The researcher uses library
aprroach to gain related data and informations, then discuss the problem and solution in descriptive
approach.