Term
| The ocular sphincter muscle is located in what tissue |
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Definition
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Term
| Which extrinsic muscle turns the eye toward the body's midline |
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Definition
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Term
| The ________ brings the tear film from the puncti to the lacrimal sac |
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Definition
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Term
| The oculomotor cranial nerve innervates the |
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Definition
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Term
| The stroma accounts for ____ % of the corneal thickness |
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Definition
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Term
| One of the functions of the choroid is to |
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Definition
| Reduce heat in the retina |
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Term
| The fundus of the eye can be examined with |
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Definition
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Term
| A common instrument used to remove foreign bodies from ocular tissue is |
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Definition
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Term
| Which of the following is a function of the iris |
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Definition
| Adjust the amount of light entering the eye |
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Term
| Which of the following layers of the cornea will regenerate if damaged |
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Definition
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Term
| A psudeoaphakic person has |
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Definition
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Term
| The hard, central portion of the crystalline lens is called the |
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Definition
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Term
| The vitreous humor is comprised mostly of what substance |
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Definition
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Term
| The space between the back of the cornea and the front of the iris is the |
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Definition
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Term
| The emmetropic human eye has approximately _____ diopters of power |
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Definition
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Term
| Nasal fibers of each optic nerve cross at the |
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Definition
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Term
| A drooping upper eyelid is called |
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Definition
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Term
| Which is not a function of the palpebrae |
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Definition
Spreading the tear film
Protection from excessive light
To shield the eye from mechanical injury
All of these are functions the question was which is NOT a function |
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Term
| Where is the aqueous humor produced |
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Definition
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Term
| Untreated glaucoma can result in damage to the |
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Definition
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Term
| If one lens appears to be higher then the other, when viewed from the front, the frame may be |
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Definition
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Term
| The flat surface touch test is utilized to verify |
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Definition
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Term
| For which operation, during standard alignment of a zyl frame, is it unnecessary to apply heat |
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Definition
| Changing pantoscopic tilt |
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Term
| Which frame type has the thickest frame stock |
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Definition
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Term
| What would be the effective RX of a +10.00 D lens which has 15 degrees of excessive tilt |
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Definition
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Term
| A -9.25 D lens is refracted at 14mm. The resultant spectacles are fit at 18mm. What is the effective prescription that the patient would perceive under normal circumstances |
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Definition
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Term
| What would be the maximum working distance for a bifocal add power of a +1.50 D |
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Definition
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Term
| Gerstman's Rule for dioptric demand, what should the near vision pupillary distance inset be |
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Definition
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Term
| An object is placed 50cm in front of a -3.00 D lens. Where does the image form |
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Definition
| 20cm in front of the lens |
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Term
| What particular frame shape would you choose if you were fitting a person with an oblong face |
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Definition
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Term
| For night driving, the best professional recommendation an optician could make would be to utilize a |
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Definition
| An anti-reflection coating |
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Term
| Distance RX -2.00 O.U, add +2.50, N.V.P. 12mm, flat top 28mm seg style. What would the quantity and base direction of the image jump |
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Definition
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Term
| Poloroid lenses are desinged to reduce glare by eliminating the _________ light waves |
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Definition
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Term
| One way to raise a metal frame that is riding too low on the patients face is to |
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Definition
| Angle the guard arms down |
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Term
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Definition
| Uses slotted lenses which are held in place with clips |
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Term
| The average human face is composed of which dominant colors |
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Definition
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Term
| The symbol two small circles in a stamped on a frame denotes a |
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Definition
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Term
| If a persons near point is 50cm, what is their amplitude of accommodation |
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Definition
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Term
| What instrument could you use to check for lens warpage |
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Definition
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Term
| Generally, the best professional recommendation an optician could make when prescribing a child's lens, would be to suggest a |
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Definition
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Term
| What type of disinfectant will burn the human cornea if it is neutralized improperly |
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Definition
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Term
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Definition
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Term
| A rigid lens with a C.P.C. and three peripheral curves would be characterized as a ________ lens |
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Definition
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Term
| If you were fitting a -6.00 D rigid lens, you might consider a ________ edge design to enhance patient comfort |
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Definition
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Term
| If a rigid contact lens has an optic zone of 8mm and secondary and peripheral curves of .4mm each, what is its chord length |
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Definition
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Term
| In general, a wetting solution makes a hydrophobic surface in a _______ surface |
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Definition
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Term
| If a patient K readings are, 41.50/43.50, what could be the C.P.C. if the lens were fit on K |
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Definition
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Term
| The instruments which measures chord length between two images projected onto the cornea and converts them into either diopters or radius of curvature is called a |
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Definition
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Term
| A test utilized to verify tear distribution on the cornea before fitting a rigid lens is |
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Definition
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Term
| The lenses with the most common availability in large diameters are |
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Definition
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Term
| When fitting polycarbonate lenses, it is critical to watch the placement of |
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Definition
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Term
| Failure to recommend which lens type often results in professional liability |
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Definition
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Term
| During refraction, the refractionist will try to align the image of the Snellen chart on the ______ of the patient |
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Definition
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Term
| The size of the letters on the 20/20 line of a Snellen chart are |
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Definition
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Term
| The size of the letter on the 20/60 line of the average Snellen chart are |
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Definition
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Term
| The newest version of a plastic photochromic lens is called the |
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Definition
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Term
| Minimum of ____ credits in board approved corusework |
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Definition
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Term
| A forty-one year old presbyope would require a reading addition of |
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Definition
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Term
| According to NJ State law, an advertising optician who chooses to advertise price, must include this in the ad |
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Definition
| A base price for the % off |
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Term
| As of 1993, NJ licensed opticians are required to complete ____ credits of continuing education on a biannual basis |
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Definition
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Term
| A periscopic lens has a base curve of |
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Definition
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Term
| Light traveling from a dense to a denser medium deviates |
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Definition
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Term
| The index of refraction of a lens made of polycarbonate is |
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Definition
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Term
| The focal length of a lens of 5.12 D strength is |
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Definition
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Term
| A minus lens, placed inside a vertometer, will display _______ |
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Definition
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Term
| A theoretically thin meniscus lens has a radius of curvature of .133m. The lens is made of index 1.8. What is the nominal power |
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Definition
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Term
| When spotting a single vision lens for edging, in relation to edged lens orientation, the lensometer dots will be on the |
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Definition
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Term
| The sphere target is in focus at -3.25. The cylinder target is in focus at -2.75. If the axis drum is set at 175, what is the RX |
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Definition
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Term
| A=48 B=45 C=46 DBL=17 ED-51 What is the pattern difference |
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Definition
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Term
| If the pattern A dimension is 51.5mm and the frame A dimension is 55mm, what is the edger setting |
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Definition
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Term
| What is the radius of curvature for a one diopter lens |
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Definition
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Term
| The dioptric power of the vertometer reticle scale is |
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Definition
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Term
| The reason that photogrey extra lenses change color |
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Definition
| Silver halide microcrystal |
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Term
| If you receive an RX that combines 2 prism diopters base out with 3 prism diopters base up, what would be the quantity and direction of the prism you would fit the O.D. |
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Definition
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Term
| What is the most common form of myopia |
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Definition
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Term
| Which of the following would you prescribe to correct the imbalance |
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Definition
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Term
| Correct the imbalance using dis-similar segments |
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Definition
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Term
| If the oculus dexter occasionally turns upward, the condition could be described as |
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Definition
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Term
| The wavelength of the electromagnetic spectrum that the human eye is most sensitive to is |
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Definition
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Term
| The phenomenon that could be described as the breaking up of incident white light into the component colors of the electromagnetic spectrum is called |
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Definition
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Term
| Light is considered to behave as a particular wave. The name given to that particular wave is |
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Definition
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Term
| Color is determined by the _______ of reflected light |
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Definition
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Term
| The type of optics that pertains to the study of lenses, prisms, mirrors and their image formation is classified as |
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Definition
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Term
| A six foot tall man standing 4 1/2 feet in front of a 36 inch properly placed plane mirror will see |
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Definition
| A virtual image, reduced half size, 9 feet from him |
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Term
| The color of the electromagnetic spectrum that will focus furthest from an ophthalmic lens after refraction |
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Definition
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Term
| The ophthalmic lens with the lowest Abbe value is |
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Definition
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Term
| The relationship between the radius and focal length of a spherical mirror is such that the radius is exactly equal to _____ the focal length |
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Definition
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Term
| The lens aberration that will make a square appear to be barrel shaped when viewed off axis is |
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Definition
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Term
| The image viewed in a convex spherical mirror will be |
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Definition
Smaller
Erect
With a smaller field of view |
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Term
| A hand held magnifier labeled 4x, would have what dioptric power |
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Definition
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Term
| If a physician asks you to fit someone with a prism that will rotate the line of sight by 5 degrees, what strength prism would you use |
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Definition
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Term
| The optical phenomenon that explains the way that anti-reflection coatings accomplish their task is called |
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Definition
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Term
| Multi-layer anti-reflection coatings consist of ______ layers of each surface of the lens |
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Definition
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Term
| If a wave consists of a frequency of 100 vibrations/second and wavelength of 78nm, what is its velocity |
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Definition
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Term
| What is the critical angle of refraction for a lens composed of cr-39 |
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Definition
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