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The reading and distance portion of the contact lens comes into the pupillary area at the same time resulting in the patient looking through the distance and near portion at the same time presenting two images at once. This technique for the correction of presbyopia is called:
For which of the following could prism ballast lenses be used:
The power of a bifocal lens gradually changes from the central area of the lens to the periphery. This lens is known as:
The rotation of a bifocal contact lens may be inhibited by:
An example of a bifocal contact lens which may rotate without impairment is:
Which of the following is not a recommended method for providing the presbyope with contact lenses?
The _______________technique may be used to correct presbyopia with contact lenses. A single vision contact lens with the distance Rx is placed in the dominant eye and the near vision Rx is placed in the nondominant eye.
Among the challenges when fitting aging patients with contact lenses include
____________________occurs when the ability to focus on close objects gradually diminishes due to lack of accommodation.
That large segment of the population born between____________is known as the “Baby Boom” generation.
The following are among the functional and structural changes which may effect contact lens where and the aging eye: 1) less corneal sensitivity 2) diminishing pupil size 3) cataract formation 4) gradual loss of elasticity of the eyelids
Patients who were successful wearing simultaneous design multifocal lenses may experience blurred distance or near vision. This is most likely due to:
___________________________may result in faster adaptation to contact lenses with aging patients.
_________________ may reduce the amount of light reaching the retina, resulting in decreased visual performance.
Patients more likely to succeed with bifocal contact lenses are:
When fitting bifocal contact lenses to the aging patient it’s best if the spherical equivalent of the addition is between:
Aging increases the likelihood of dry eye symptoms because:
The easiest way to correct the near vision of presbyopic contact lens patients is to:
__________________ involves placing a lens with the distance vision correction in the dominant eye and a lens with the near vision correction in the other eye.
In this contact lens design the near correction is in a small circle in the center of the lens surrounded by a much larger section containing the distance power.
_______________________contact lenses change lens power gradually from the center to the edge of the lens.
While wearing ______________________lenses the distance and the near portion of the lens are within the line of sight at all times.
______________________________are similar to spectacle bifocals in that the patient looks through the upper portion of the lens to see far objects and through the lower portion of the lens while reading.
________________ is one of the most common lens stabilizing techniques which causes the lens to rotate so that the base of the prism is oriented inferiority.
___________________________serves to stabilize a lens when the lower flat edge comes to lie adjacent to the lower lid margin.
The ______________technique of lens stabilization creates a lens which is thicker along its central body which lies along the palpebral fissure and thinner along the inferior and superior edges which come to lie under the upper and lower lids.
________________________lens surfaces used for axis stabilization are generally used in combination with truncation or prism ballast.
While wearing bifocal contact lenses the patient should understand that visual acuity under all circumstances may be
Combining all “baby boomers” into the “mature” category simply because of their age 1) is an excellent business decision 2) may not be the best business decision 3) may cause them to look elsewhere for their eyecare services 4) may be insulting to them
As boomers advance in age which of the following characteristics may effect contact lens wear:
Boomers are also more likely than younger patients to use _________ which may affect lens wear.
Pupil size can ________________ as we age.
As patients age, their eyelids gradually lose elasticity, resulting in reduced eyelid muscle. This may make the patient ___________________________ .
The popularity of monovision fittings can largely be attributed to its relative ___________________ compared to the use of actual bifocal contact lenses.
To decrease or alleviate _______________, prescribing options include rewetting drops and ointments, punctal occlusion, omega-3 fatty acids, eyelid scrubs and warm compresses.
Alternating vision (translating) lenses are so named because the pupil alternates between the two powers as the ________________________.
When a lens is truncated, the amount sectioned off will depend on the _____________________ .
When a lens is truncated its diameter is effectively reduced which results in a ___________________ .
An aspheric surface can aid in lens-axis stabilization by ___________ to the motion of the lens.
When the shape of the ________________ surface closely parallels that of the cornea lens rotation can be minimized.