eQuizShow

Eye Got It!

Focus on it

Question: The Wavelength of light makes a difference in how the eye perceives it. Which characteristic of visible light is determined by its wavelength?
Answer: color

Question: Which color has the longest wavelength? The shortest?
Answer: Longest: Red 650-750nm
Shortest: violet 400-446nm


Question: Two prisms placed base-to-base form the basis of what type of lens?
Answer: Convex (plus)

Question: "With the rule" astigmatism is corrected by plus cylinders at or near what axis?
Answer: 90 degrees

Question: When using a streak retinoscope, if you see "against" motion, this indicates the need to place what kind of lens power in front of the eye?
Answer: minus power

Movers and Shakers

Question: Simultaneous movement of both eyes in the same direction is calle
Answer: Versions

Question: A constant ocular deviation  caused by extraocular muscle imbalance is called
Answer: tropia

Question: What treatment is used to correct a strabismic amblyopia?
Answer: patching the good eye to force the amblyopic eye to work harder

Question: To test the inferior rectus muscle, the patient needs to look _____ and ______.
Answer: down and out

Question: All of the extraocular muscled, except the inferior oblique, orginate at the ___________ ___ ________.
Answer: Annulus of Zinn

Restricted Access

Question: Where in the visual field is the physiologic blind spot?
Answer: 15 degrees temporal to fixation

Question: What arae the peripheral limits of a normal visual field?
Answer: 60* nasal, 60* superior, 70* inferior, 90*temporal

Question: Which method of perimetry is the most widely used and is essentially a screening test?
Answer: confrontation

Question: Which ganglion fibers of the retina cross through the center of the chiasm into the opposite lateral optic tract?
Answer: the nasal fibers

Question: What is the benefit of using a blue stimulus on a yellow background in automated perimetry?
Answer: Earlier detection of visual field loss

That's Fitting!

Question: A parasite organism found in hot tubs, swimming pools, or contaminated water, which can cause serious infections in those who wear contact lenses is called...
Answer: Acnthamoeba

Question: What is always the first step with insertion or removal of any contact lens?
Answer: Thoroughly wash your hands

Question: The measurement from one edge of the contact lens to the opposite side is called..
Answer: total contact lens diameter (chord diameter)

Question: What is the instrument used to measure the curvature of the cornea?
Answer: ophthalmometer (keratometer)

Question: Name 5 factors that cause corneal edema from contact lenses?
Answer: Flat lens causing compression of the cornea
steep lens causes stagnation of tears
poorly centered lens causes pressure in one area
improper blinking
improper cleaning of lens


The Pressure's On

Question: One of the first and oldest methods used to determine IOP is...
Answer: tactile(finger)tension

Question: What is the name of the tonometer that consists of a footplate with a central movable plunger fitted into a barrel?
Answer: Schiotz tonometer

Question: A calibration bar is used to check the calibration of the GOldmann tonometer and is checked at what settings?
Answer: 0, 2, 6

Question: If there are too little tears or fluorescein, the applanation pressure reading may be too ____
Answer: Low

Question: If the prism is not aligned properly at the axis of the minus cylinder, an incorrect IOP reading may be obtained if the cornea has ______ of astigmatism or more.
Answer: 3 diopters