Background: Primary Open-Angle Glaucoma (POAG) and high myopia are two ophthalmological conditions that can lead to thinning of the retinal nerve fiber layer (RNFL). POAG is characterized by increased intraocular pressure (IOP), contributing to optic neuropathy and visual field defects. Meanwhile, high myopia is associated with elongation of the eyeball, leading to structural changes in the RNF…