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Optics
Anatomy
Contacts
Ocular Diseases
Policies & Procedures
100
The first meridian of a refractive correction.
What is the sphere power?
100
The transparent layer on the front of the eye.
What is the cornea?
100
How much does 1 box of spherical Biofinity CL cost?
What is $55?
100
The common term for ocular surface disease.
What is dry eye syndrome?
100
How long do we allow a patient to attempt their I&R before asking them to reschedule?
What is 30 minutes?
200
The index of refraction for CR-39 plastic lenses.
What is 1.498?
200
When relaxed, the crystalline lens contributes about _____ diopters of power to the total power of the eye.
What is 17 diopters?
200
A contact lens is worth 2 weeks. There are 6 lenses in each box. How many boxes will it take to make a year supply assuming 4 weeks in each month?
What is 8 boxes? (Did you forget that the patient has 2 eyes?)
200
In glaucoma, defects in the superior visual field are said to correspond with thinning of the axons in which part of the retina?
What is the inferior RNFL?
200
What is the name of procedure used to measure intraocular pressure in the exam room?
What is Goldmann Applanation?
300
What is the spherical equivalent of the following Rx? +0.50-3.00x180
What is -1.00?
300
Which of the eye's structures supplies 70-75% of its focusing power?
What is the cornea?
300
What contact is offered in both an 8.8 and 8.4 base curves?
What is Acuvue Oasys?
300
What is the name of the "rule" that gives the order in which glaucoma is said to affect a patients visual fields?
What is the ISNT rule?
300
When is a patient allowed to take their trial contacts home with them to learn how to put them in and out prior to success in the office?
What is never!! A patient must successfully put one CL in, and take one CL out before being allowed to leave the office with them.
400
ANSI standards allow a cylinder of (+/-) 2.00 a tolerance of ________ degrees.
What is 2 degrees?
400
Circular channel in the eye that collects aqueous humor from the anterior chamber and delivers it into the bloodstream via the anterior ciliary veins.
What is Schlemm's Canal?
400
One contact lens is "flatter" than another. You know that one lens is an 9.2 base curve and the other is a 8.2. Which lens is the more curved or "steeper" lens?
What is 8.2? TREND: The HIGHER the base curve... The FLATTER the contact.
400
What common retinal disorder causes loss of central vision due to drusen and bleeding behind the retina?
What is macular degeneration?
400
Thinning of the axons in the RNFL (Retinal Nerve Fiber Layer) can be detected by which 2 diagnostic machines?
What is the GDx and OCT?
500
A plus lens moved up from the primary position results in:
What is Base Up Prism?
500
Name the 5 layers of the cornea in order beginning with the outermost layer.
What is the epithelium, Bowman's, stroma, Descement's, endothelium?
500
What value is used to measure the oxygen transmissibility of a contact? What does it mean when it is high vs low? What value does Biofinity, Acuvue Oasys, and Air Optix N&D have at -3.00D?
What is the Dk/t value? A high numbers means better oxygen transmission. Biofinity = 160, Acuvue Oasys = 147x(10^-9 ) Air Optix N&D = 175.
500
What could possibly cause binasal hemianopsia? Bi-Both OD & OS visual fields Nasal-referring to the nasal portion Hemi-Involves half of each visual field Anopsia-Blindness
What is a pituitary brain tumor?
500
What is the name of the procedure used to measure corneal thickness?
What is Pachymetry (Pachs)?