Myopia:
Eye condition meant to focus parallels rays in front of retina. Objects are seen distinctly only from close.
Nearsightedness:
Close vision only.
Nose bridge:
space between each lens to drop the glasses on.
Nose pads:
Silicone pieces meant to hold the glasses and protect your nose from any damages. Usually used when the frame is made out of metal.
OD or Oculus Dexter:
Right eye
Optician:
Person who makes and/ or sells glasses with prescriptions. This person is not authorized to pass eye exams.
Optometrist:
Someone in charge of examine people's eyes.
Ophthalmologist:
A doctor who treats eye diseases.
OS or oculus sinister:
Left eye
Plano:
Term used when talking about a pair of glasses that do not contain any curvature and any correction.
Polarized lenses:
Lenses that contain a specific kind of chemical that reduces glare. Mostly used to protect the reflection when the sun is reflecting on the water.
Polycarbonate:
Flexible chemical composite and very strong. Easy to use to make glasses.
Prescription:
Medical document, indicating the right correction.
Prism:
Optical flat element that retracts the light.
Progressives or bifocal:
Lenses meant to get multiple visions within one glass. You can have a clear vision far or nearby.
Pupil:
Circular black area in the middle eye, where the light comes in.
Pupillary distance:
The distance between both pupils of your eyes.
Readers:
Glasses used only to see from very nearby, and to read.
Refraction:
Reaction that causes the light to bend when it's getting in the lenses.
Retina:
Back area in the eye that receives the light and communicate directly the information to the brain.
Segment height:
Space from the bottom of the lens to the top of the bifocal lens.
Single-vision lenses:
Contrary to progressive lenses, the single vision lenses are used only to see from either far away or nearby.
Sphere:
Lens power prescribed to correct nearsightedness or farsightedness. Could be read as a positive or a negative.
Sunglasses:
Glasses used to protect from the sunlight and UV. Could contain prescription (to help you see better) or could also be plano (no prescription).
Temple (arm):
Long arms on the sides of the frame that extent from the hinge and over the ears to keep the glasses on the wearer's face.
Titanium:
Strong chemical material used to make the frames.
Tortoise:
A mix of two colors that creates an effect of splattered spots.
Ultraviolet light (UV light):
Electromagnetic radiation that is usually produced by the sun. Can be dangerous for eyes when they're exposed for too long.
Visual acuity:
The ability of the organ to detect detail. Usually measured by reading letter from different sizes on a wall.
Visual field:
The complete area seen when the eye is facing forward.
