Determine whether this graph is planar. 
Definitions:
Hyperopia
A vision condition in which distant objects are seen more clearly than near objects due to the eye's shape causing light rays to focus behind, instead of on, the retina.
IOP
Intraocular pressure, the fluid pressure inside the eye, crucial for eye health assessment.
LPI
Acronym for Laser Peripheral Iridotomy, a medical procedure used to treat narrow angles or angle-closure glaucoma.
Blepharoptosis
A state in which the upper eyelid sags or descends.
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