When taking an ocular history what are two key elements to note on the chart?
The date of the last eye examination and the current optical prescription
What is a specific health or eye health problem that would likely affect the final optical prescription?
Diabetes
The Snellen chart uses the terminology 20/20 for an emmetropic eye. For a patient without eyeglasses on, what would 20/80 mean?
A patient placed at 20 feet from the chart can see the 80 feet letters ( what someone with normal vision can see at 80 feet)
What is the difference between symptoms and signs?
A sign is noticed by the examiner and a symptom is noticed by the patient.
The chief complaint is determined by using open questions?
True
The initial visual acuity assessment is typically done with or without lenses in place?
without
Pinhole testing will help to determine if a patient is having an oclular pathology problem or refractive problem?
True
The average near point of accommodation for a ten year old is?
7 cm
An objective auto refractor is a computerized system used to neutralize the refractive power of the eye using ultraviolet light?
False
The retinoscopic streak moves against the direction of the scope then minus lenses are added between the retinoscope and the phoropter?
True
Finding the correct cylinder power during subjective refraction is?
The third objective
What will binocular vision testing help you know?
Identify and describe testing for lateral and vertical phorias
A cobalt blue filter when using a biomicroscope is designed:
for use with fluorescein
For what functions may the direct ophthalmoscope be used?
To view the retina
To view the cryatalline lens
As a handheld magnification system
How are visual field screening test done?
Monocularly
The steps used during a remote refraction are the same as those used for a manual refraction?
True
Why would patients choose to use soft contact lenses?
Easy adaptation
What is the first step in the soft contact lens fitting protocol?
Obtain and record the patients history
During what decade did the first fluorosilicone acrylate lens materials appear on the market?
1980’s
What reasons would a contact lens practitioner choose to fit gas permeable contact lenses? 3
Irregular corneas
Highly astigmatic patients
Orthokeratology