Neutralizing Lens Power Quiz

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What is the purpose of determining the patient's maximum accommodative amplitude?

To measure the patient's pupil size

To assess the eye's ability to focus on distant objects

To evaluate the dioptric distance between far-point and near-point of accommodation (correct)

To determine the patient's visual acuity

What is the main material required for the minus lens method for measuring accommodation amplitude?

Snellen chart

Tonometer

Phoropter or loose lens racks (correct)

Ophthalmoscope

Why is testing done monocularly for measuring accommodation amplitude?

It provides a clearer image of reading material

It allows for better illumination of the near target

It enables assessment of positive relative accommodation (correct)

It prevents double vision during testing

What would be the patient instruction during the measurement of maximum accommodative amplitude?

"Try to get the letters clear each time I change the lens in front of your eye" Signup and view all the answers

What is the approximate distance at which the near target is set for measuring accommodative amplitude?

20 centimeters Signup and view all the answers

Why is a small Hart chart not used as the near-point card for measuring accommodation amplitude?

It is not designed to measure accommodation amplitude Signup and view all the answers

What is the purpose of the cognitive retinoscopy described in the text?

To assess the patient's accommodative system, binocularity, and reading comprehension while performing a reading task Signup and view all the answers

What is the expected range for normal lag of accommodation?

+0.25 to +0.5 D Signup and view all the answers

What does a lag greater than +0.75 suggest according to the text?

Accommodative disorder Signup and view all the answers

What is the purpose of using 'probe' lenses in front of both eyes during retinoscopy?

To observe the effect of the lenses on motion, color, brightness, and reflex flexibility Signup and view all the answers

Which combination of reflex characteristics indicates that the material being read is too difficult to comprehend?

High 'with' motion, dulling of reflex, brick-red color Signup and view all the answers

What is most enjoyed by a boy in farming according to one of the reading paragraphs?

Making maple sugar Signup and view all the answers

In which grade level reading material are there interesting birds in a bird-room named Jackie?

Grade 5 Signup and view all the answers

What did the king and queen lack according to one of the reading paragraphs?

Children in the house or garden Signup and view all the answers

'As always happens in such exigencies he was lost' is mentioned in which grade level reading material?

Grade 11 Signup and view all the answers

'One day he saw his four feet' is part of which grade level reading material?

'Once there was a little pig.' (Grade 2) Signup and view all the answers

What does 'He lived with his mother in a pen.' refer to?

The little pig living with his mother in a pen. Signup and view all the answers

What is the purpose of the pull-away technique for amplitude of accommodation?

To measure the amplitude of accommodation by moving a near-point card away from the patient until they can first read the letters. Signup and view all the answers

What is the recording method for the push-up technique for amplitude of accommodation?

First sustained blur in inches or centimeters Signup and view all the answers

According to norms, what is the minimum amplitude of accommodation for a 30-year-old based on Hoffstetter's formula?

7.00 D Signup and view all the answers

What is the patient instructed to do in the pull-away technique for amplitude of accommodation?

To report being able to read the letters as the near-point card is moved away from them. Signup and view all the answers

What is used for binocular testing in the accommodative facility procedure?

Polaroid glasses and Acuity Suppression #9 vectogram Signup and view all the answers

What is the purpose of the accommodative facility procedure?

To determine the patient's ability to make rapid and accurate step changes in accommodation. Signup and view all the answers

What is used in the push-up technique for amplitude of accommodation for patients under 30 years old?

+/-1.50 lens flippers Signup and view all the answers

What is divided to obtain diopters in the pull-away technique if measured in centimeters?

$1/ ext{meters}$ Signup and view all the answers

What is done if the examiner is uncertain whether the patient is really clearing the print in the accommodative facility procedure?

Ask them to read numbers aloud. Signup and view all the answers

What does dividing 40 by the number of inches give in the push-up technique for amplitude of accommodation?

$ ext{Linear distance of first sustained blur} (in diopters)$ Signup and view all the answers

What should be added to obtain the amplitude in diopters in both push-up and pull-away techniques?

-2.50 diopters for working distance Signup and view all the answers

What should be used for monocular testing in the accommodative facility procedure?

$+/-1.50$ lens flippers Signup and view all the answers

What method utilizes a polarized vectogram instead of the near point card?

Acuity Suppression Vectogram #9 Signup and view all the answers

How is Physiological diplopia monitored?

By monitoring suppression with a pen or pick-up stick Signup and view all the answers

What do patients need to report while undergoing a test involving the polarized Rx?

If one of the pens or sticks ever disappears while looking at the letters Signup and view all the answers

Which age group has an expected binocular accommodative facility of 5.0 cycles per minute (CPM)?

8-12 years old Signup and view all the answers

What is the purpose of Fused Cross Cylinder testing?

To evaluate the lead or lag of accommodation Signup and view all the answers

What is the purpose of NRA/PRA testing?

To measure flexibility between accommodation and convergence Signup and view all the answers

Which type of near point retinoscopy is used to objectively determine a patient's accommodative posture or lag of accommodation?

MEM retinoscopy Signup and view all the answers

What should be evaluated after the initial assessment in MEM retinoscopy?

Tentative near add Signup and view all the answers

What should patients do during MEM Retinoscopy?

"With both eyes open, read the words on the card aloud" Signup and view all the answers

What age group has an expected monocular accommodative facility of 7.0 cycles per minute (CPM)?

8-12 years old Signup and view all the answers

What is tested using Near Point Retinoscopies?

Range of clear vision at near point Signup and view all the answers

What is the purpose of selecting a tentative near point lens prescription through Fused Cross Cylinder testing?

To determine an appropriate near point lens prescription Signup and view all the answers

What does the Groffman tracing aim to improve?

Speed and accuracy of multiple small-angle saccadic and/or pursuit ocular motility Signup and view all the answers

What is recommended to add as a distractor for the Groffman tracing exercise?

Number/letter counting Signup and view all the answers

What is the purpose of the flashlight tag exercise?

To improve the accuracy, smoothness, and speed of pursuit ocular motility while minimizing head movements Signup and view all the answers

What type of filters may be used during the flashlight tag exercise?

Red-green filters Signup and view all the answers

What patient instruction is recommended for the flashlight tag exercise?

"Try to put your flashlight spot on mine and move it to follow mine." Signup and view all the answers

What can be added as inter-sensory integration during therapy techniques for fixation, pursuit, and saccades?

Metronome Signup and view all the answers

What is used to perform the Groffman tracing exercise?

Chalkboard, paper or computer Signup and view all the answers

What is NOT needed for the flashlight tag exercise?

"Start at the ____ and follow the line to see what it connects to." Signup and view all the answers

What patient instruction is NOT recommended for the Groffman tracing exercise?

"Count the number of lines you see." Signup and view all the answers

Which age group can perform Groffman tracing exercise binocularly?

5-10 years old Signup and view all the answers

What is the purpose of the Marsden Ball exercise?

To improve accuracy and smoothness of pursuits while minimizing head movements Signup and view all the answers

What equipment is required for the Keystone Rotator exercise?

Standing/keystone rotator and an eye patch Signup and view all the answers

What is the purpose of the Pegboard Rotator exercise?

To improve the speed and accuracy of pursuit ocular motility Signup and view all the answers

Which exercise may involve using red-green filters and monitoring suppression?

Keystone Rotator Signup and view all the answers

Which patient instruction is recommended for the Marsden Ball exercise?

"Let the ball swing back and forth in front of you. Your job is to follow the ball with your eye(s). Try to keep your head still." Signup and view all the answers

What type of integration does the Marsden Ball exercise focus on?

Visual-motor integration Signup and view all the answers

Which exercise involves using a bunting stick and standing on one foot to minimize somato-sensory support?

Marsden Ball Signup and view all the answers

What is observed during the Keystone Rotator exercise to appreciate depth effect?

"Notice whether the center floats closer or moves farther away" Signup and view all the answers

What is recommended for adding motoric hand support during the Keystone Rotator exercise?

"Have the patient point to the moving target, if necessary" Signup and view all the answers

Which exercise involves using a rotating Peg Board Trainer?

Pegboard Rotator Signup and view all the answers