manifest refractometry

Question 1

phoropter (refractor)

Answer 1

used to determine refractive error

Question 2

procedure determining a patient’s refractive error

Answer 2

refractometry (OMT)

Question 3

ophthalmologist, OD, MD prescribe

Answer 3

refractions

Question 4

refractometry that requires patient to determine difference of clarity in images

Answer 4

subjective

Question 5

refractometry not requiring decision making from patient

Answer 5

objective

Question 6

6 starting points of refractometry

Answer 6

retinoscopy 
glasses rx
last MR
auto refraction
est. sph or cylinder
keratometry reading

Question 7

___ is always checked first by presenting + power

Answer 7

Sph

Question 8

when SPH moving in + ask ___,____ or ____

Answer 8

better, blurry, just lighter

Question 9

when moving SPH in - direction ask if _____ or _____

Answer 9

sharper and clearer or darker and smaller

Question 10

plus cylinder is ___

Answer 10

white dots

Question 11

minus cylinder is

Answer 11

red dots

Question 12

fog and balance

Answer 12

performed to make sure no over or under correction in either eye

Question 13

fogging is achieved by using ___

Answer 13

+ lens

Question 14

check if patient is over minused

Answer 14

duochrom test (red green)

Question 15

____ light waves have longer wavelength than ____ light waves

Answer 15

Red, green

Question 16

commonly used cycloplegic drop for refractions

Answer 16

cyclopentolate

30-60min for 6-24hr

Question 17

___ should be checked on anyone w refractive error grater than -+ 4.00D

Answer 17

Vertex distance

Question 18

OMT goal for every MR is

Answer 18

accurately perform MR and get best corrected visual acuity
use least amount of -
use least total cylinder power