Podcast
Questions and Answers
What is visual acuity?
What is visual acuity?
Acuteness or sharpness of vision.
What type of symptoms might be experienced with myopia?
What type of symptoms might be experienced with myopia?
Difficulty seeing objects at a distance and may squint.
What methods can be used to correct myopia?
What methods can be used to correct myopia?
Corrective lenses (eyeglasses or contact lenses) or laser eye surgery.
What causes an individual with astigmatism to have distorted and blurred vision?
What causes an individual with astigmatism to have distorted and blurred vision?
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What is an ophthalmologist?
What is an ophthalmologist?
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What is an optometrist?
What is an optometrist?
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What is an optician?
What is an optician?
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What condition can be detected by measuring distance visual acuity?
What condition can be detected by measuring distance visual acuity?
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What type of patient would warrant the use of the Snellen Big E eye chart?
What type of patient would warrant the use of the Snellen Big E eye chart?
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Explain the significance of the top number and bottom number next to each line of letters on the Snellen eye chart.
Explain the significance of the top number and bottom number next to each line of letters on the Snellen eye chart.
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List two conditions that can be detected by measuring near visual acuity.
List two conditions that can be detected by measuring near visual acuity.
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Explain the difference between congenital and acquired color vision defects.
Explain the difference between congenital and acquired color vision defects.
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What is a polychromatic plate?
What is a polychromatic plate?
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List three reasons for performing eye irrigation.
List three reasons for performing eye irrigation.
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List three reasons for performing eye instillation.
List three reasons for performing eye instillation.
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What is the range of frequencies for normal speech?
What is the range of frequencies for normal speech?
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List five conditions that may cause conductive hearing loss.
List five conditions that may cause conductive hearing loss.
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List four conditions that may result in sensorineural hearing loss.
List four conditions that may result in sensorineural hearing loss.
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What information is obtained through audiometry?
What information is obtained through audiometry?
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What information is obtained through tympanometry?
What information is obtained through tympanometry?
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List three reasons for performing ear irrigation.
List three reasons for performing ear irrigation.
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List three reasons for performing ear instillation.
List three reasons for performing ear instillation.
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Explain how impacted cerumen is removed from the ear.
Explain how impacted cerumen is removed from the ear.
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Explain how to straighten the external auditory canal in an adult and in children 3 years old or younger.
Explain how to straighten the external auditory canal in an adult and in children 3 years old or younger.
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Study Notes
Eye Assessment
- Visual Acuity: Refers to the sharpness or clarity of vision.
- Myopia Symptoms: Caused by light rays focusing in front of the retina, leading to difficulties seeing distant objects and often results in squinting.
- Myopia Correction: Can be addressed with corrective lenses (eyeglasses or contacts) or through laser eye surgery.
- Astigmatism: Results in distorted or blurred vision due to an oval-shaped cornea, causing light to focus on two different points on the retina.
- Ophthalmologist: A medical doctor specializing in the diagnosis and treatment of eye diseases and disorders.
- Optometrist: A licensed healthcare provider skilled in measuring visual acuity and prescribing corrective lenses.
- Optician: A professional who fills prescriptions for eyeglasses and contact lenses.
- Distance Visual Acuity Testing: Used primarily to diagnose myopia among other conditions.
- Snellen Big E Chart: Designed for preschool children who cannot read or speak English; useful in assessing visual acuity.
- Snellen Chart Interpretation: The top number represents the test distance, while the bottom number represents the distance a person with normal vision can read the line.
- Near Visual Acuity Measurement: Can reveal conditions such as hyperopia and presbyopia.
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Color Vision Defects:
- Congenital Defect: Inherited, present at birth, often affects males.
- Acquired Defect: Develops after birth due to injury, disease, or medication.
Eye Procedures
- Polychromatic Plate: A diagnostic tool featuring colored dots against a contrasting background to assess color vision.
- Eye Irrigation: Performed to cleanse the eye by flushing out foreign particles, discharges, or harmful substances.
- Eye Instillation: Used to treat infections, soothe irritation, or dilate pupils.
Ear Assessment
- Normal Speech Frequency: Ranges from 300-400 Hz.
- Conductive Hearing Loss: Causes include external otitis media (swimmer's ear), foreign bodies, benign growths, impacted cerumen, or perforated tympanic membranes.
- Sensorineural Hearing Loss: Can result from infectious diseases, prolonged exposure to intense noise, or tumors.
- Audiometry: Provides data on the extent of hearing loss and affected frequencies.
- Tympanometry: Used to determine the cause of hearing loss, particularly in cases of serous otitis media.
Ear Procedures
- Ear Irrigation: Reasons include removing cerumen, extracting foreign bodies, or alleviating inflammation with antiseptic solutions.
- Ear Instillation: Administered to soften impacted cerumen, treat infections, or relieve pain.
- Impacted Cerumen Removal: Generally achieved through ear irrigation, a routine procedure to clear excessive earwax and foreign materials.
- Straightening the External Auditory Canal: In adults, pull backward and upward; for children under three, pull straight back gently to properly assess the ear.
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Description
Test your knowledge with these flashcards on eye and ear assessment procedures. This quiz covers essential terms and definitions related to visual acuity and myopia. Perfect for students preparing for exams in health sciences.