Optics

Question 1

condition in which light doesnt focus on the retina

Answer 1

ametropia

Question 2

light focuses to different point depending on the angle of incidence

Answer 2

astigmatism

Question 3

amblyopia

Answer 3

failure of vision pathway to fully develope

Question 4

synkinetic reflex

Answer 4

convergence of eyes and miosis are linked to accomodation

Question 5

where does most refraction occur

Answer 5

air-tear interface (cornea)

Question 6

how does a nuclear cataract affect lens power

Answer 6

increases it by increasing refractive index

Question 7

two potential components of astig

Answer 7

corneal and lenticular

Question 8

what are the three components of lens correction

Answer 8

first is my/hyperopic, second for astig, third is angle of astig

Question 9

difference b/w myopic astig and mixed astig

Answer 9

mixed astig has a larger astig component than myopic

Question 10

cycloplegic refraction

Answer 10

paralyze accommodation to prevent convergence and miosis

Question 11

what would you use to determine if the astig is in the cornea or lens

Answer 11

keratometry

Question 12

corneal topography

Answer 12

take photos of cornea and have computer analyze

Question 13

what are the three things to consider when evaluating optics

Answer 13

cornea, lens, eye length