42 Questions
What is the effect of sleeping with contact lenses (CL) at night, according to the text?
Increased lack of oxygen and more swelling
Why are high spectacle prescriptions challenging to fit with lenses?
They cause excessive magnification or minification
What is the FDA classification of contact lenses (CL), as mentioned in the text?
Class 2
Why should contact lenses not be exposed to tap water or lake water?
To avoid introducing germs to the eye
What does a pupil diameter smaller than the contact lens (CL) size lead to, especially in dim light?
Blur at night
What is considered a wet eye based on tear breakup time (TBUT)?
Greater than 13 seconds
What is the average assumed vertex distance for corneal curvature?
11-12 mm
What condition makes a patient unsuitable for cosmetic contact lenses?
Extreme dry eye
How does pregnancy affect corneal sensitivity and contact lens wearing?
Increases corneal sensitivity and discomfort with prior CL
Which type of disease causes incomplete closure of the lids and contributes to dryness in the eye?
~Thyroid disorders
What is the effect of taking anti-histamines while wearing contact lenses?
To dry out mucus production and may cause dry eyes with CL
Why are cosmetic lenses not recommended for patients with recurrent epithelial basement layer disruption?
Result in microvilli loss and worsen dryness symptoms
What is the main benefit of contact lenses compared to spectacles?
Improved peripheral vision
Why wouldn't a patient with severe dry eye be a good candidate for contact lenses?
The benefits do not outweigh the risks
What is the most appropriate recommendation for minimizing the risk of wearing contact lenses?
Educating patients on appropriate contact lens care
Why is not everyone a candidate for LASIK surgery?
Potential for recurrent corneal erosions post-surgery
What is the main advantage of wearing daily disposable contact lenses?
Enhanced comfort throughout the day
Why is it important to replace the contact lens case every 3 months?
To minimize the risk of contamination
What is a potential consequence of sleeping with contact lenses in terms of oxygen delivery to the eye?
Reduced oxygen delivery to the cornea
Why is it important to assess ocular tissue when considering a patient for contact lens use?
To evaluate if the patient is a good candidate for contact lenses
What type of wear involves wearing contact lenses for 30 consecutive days?
Continuous wear
What wear schedule is recommended for the healthiest option to minimize exposure to debris from previous days?
Dailies wear
What risk factor is associated with abusing contact lenses by not replacing them regularly?
Increased risk of inflammation and infections
What can soft contact lenses induce if worn for extended periods?
Increased risk of corneal swelling
What is the consequence of sleeping with contact lenses at night, according to the text?
Decreased oxygen delivery to the eye
What is the main advantage of wearing silicone hydrogel contact lenses?
Higher oxygen permeability
Why are patients with extreme dry eye not suitable candidates for cosmetic contact lenses?
Symptoms worsen with cosmetic lens wear
How does pregnancy affect contact lens wearing?
Uncomfortable wearing of prior lenses
Why should contact lenses not be exposed to tap water or lake water?
Potential introduction of germs to the eye
What is the effect of taking anti-histamines while wearing contact lenses?
Reduced mucus production
What type of condition can prevent patients from being suitable for cosmetic contact lenses?
All of the above
What is the main reason a patient might choose to wear contact lenses for cosmetic purposes, despite the associated risks?
To have a wider visual field compared to wearing spectacles
Why might a patient with severe dry eye not be a good candidate for contact lenses?
The patient might be at a higher risk of ocular surface complications
What is the recommended wear schedule for minimizing exposure to debris from previous days when wearing contact lenses?
Dailies wear
Why is it important to replace the contact lens case every 3 months?
To reduce the risk of contamination from the outside and spread to the contact lenses
What is a potential consequence of sleeping with contact lenses in terms of oxygen delivery to the eye?
Reduction in oxygen delivery, leading to corneal swelling
What type of wear schedule involves wearing contact lenses for 6-7 consecutive days before taking them off?
Extended wear
What is a potential consequence of abusing contact lenses by not replacing them regularly?
Putting the ocular surface at risk and increasing the chance of ocular complications
What is a reason some patients might be unsuitable candidates for LASIK surgery?
Risk of recurrent corneal erosions post surgery
What is considered a dry eye based on tear breakup time (TBUT)?
Having a TBUT of less than 9 seconds
What type of disease causes incomplete closure of the lids and contributes to dryness in the eye?
Thyroid Disease
What is one potential effect of wearing soft contact lenses for extended periods?
The patient may not notice corneal swelling due to reduced oxygen delivery at night
This quiz covers considerations for using soft contact lenses, including the benefits of wider visual field, risks of inflammation and infection, and assessment of ocular tissue to determine suitability for contact lens wear. It also discusses the use of contact lenses for cosmetic and therapeutic purposes.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
