Ocular Health
Leading cause of vision impairment or blindness in the world
What is cataract?
PD
Tonopen, Goldmann and NCT are all methods to measure this
What is IOP (intraocular pressure)?
EX3, Crizal and SeeMax for example
What are anti-reflective coatings
This triggers most photochromic tints to darken
What is UV radiation?
Most common eye disease that causes peripheral vision loss
Glaucoma
NCT
Humphreys, Octopus and Medmont machines all measure this
What is a patient's visual field?
This must be done before taking any point of wear (vertex, panto, fitting height) measurements
What is frame adjustment
Looking at this natural phenomenon can cause retinal burns
What is a solar eclipse?
The most common retinal dystrophy
Retinitis pigmentosa
ARMD
What is age-related macular degeneration?
EDTRS, Tumbling E and Snellen charts all measure this
What is visual acuity?
Most common width of a bifocal segment
What is 28mm
The most common optical polymer in the ophthalmic field
What is CR-39?
Hot compresses and omega 3 supplements treat this layer of the tear film
What is the outer lipid layer?
OCT
What is optical coherence tomography?
This machine measures a patient's corneal curvature
What is a keratometer?
(Ours is combined with our autorefractor)
What is a distometer?
This form of glaucoma can be an ocular emergency
What is angle closure glaucoma?
Autoimmune disease associated with severe dry eye disease
What is Sjögren's syndrome?
DIMS
Hint: Technology used in Hoya's myopia control lenses
Defocus Incorporated Multiple Segments
Handheld equipment the doctor's uses to estimate a patients prescription (used in place of an autorefractor)
What is a retinoscope?
This value represents the amount of dispersion of light a material causes. Low numbers mean the material causes a lot of chromatic aberration
What is the Abbe value?
Another organ that has a fundus
Stomach
(uterus, gallbladder, bladder, brain - has multiple)