Soft Torics in Optics

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What percentage of the population has cylinders over 0.75DC?

38% (correct)

50%

25%

60%

What percentage of patients are not fitted with a toric lens when they should be?

10% (correct)

15%

5%

20%

What is the primary mechanism by which toric lenses rely on the blink reflex?

Cyclo-rotation of the eye

Nasal rotation of the lower lid

Vertical movement of the upper lid (correct)

Horizontal movement of the lower lid

What is a potential drawback of using prism ballast for stabilization?

Reduced oxygen transmission Signup and view all the answers

Which of the following is a characteristic of dynamic stabilization zones?

Edge is thinner Signup and view all the answers

What is the significance of knowing the stabilization design of a particular toric lens?

It can affect the performance of the lens on the eye Signup and view all the answers

What is a potential consequence of using a toric lens with a thick edge?

Reduced oxygen transmission Signup and view all the answers

What is an advantage of aspheric optics over torics?

Better for small cylinders Signup and view all the answers

What is a potential advantage of using daily disposables for toric lenses?

Reduced risk of neovascularisation Signup and view all the answers

What is the name of the design used in Acuvue Oasys for Astigmatism?

Precision Balance 8/4 design Signup and view all the answers

Why is the zipper effect important in toric lenses?

It assists in the orientation of the lens during blinking Signup and view all the answers

What is the primary advantage of dynamic stabilization zones?

They provide easier orientation of the lens Signup and view all the answers

Why may patients experience neovascularization with hydrogel prism-ballasted toric lenses?

Due to the low oxygen transmission Signup and view all the answers

What is a potential drawback of using toric lenses with a thick edge?

Reduced comfort Signup and view all the answers

Why are daily disposables an attractive option for toric lenses?

They eliminate the need for cleaning and maintenance Signup and view all the answers

What is the primary purpose of stabilization designs in toric lenses?

To orient the lens correctly Signup and view all the answers

Why is it important to know the stabilization design of a particular toric lens?

To troubleshoot issues with lens rotation Signup and view all the answers

What is the significance of the 10% statistic mentioned in the text?

10% of patients are not fitted with a toric lens when they should be Signup and view all the answers

How do aspheric optics compare to torics?

Aspheric optics are better for small cylinders Signup and view all the answers

What is the purpose of the Accelerated Stabilization Design (ASD) in toric lenses?

To assist in the orientation of the lens Signup and view all the answers

What is a characteristic of Soflens daily disposable toric lenses?

They are designed for early presbyopes Signup and view all the answers

What is the purpose of the 'zipper effect' in toric lenses?

To facilitate the stabilization of the lens Signup and view all the answers

What is a benefit of using daily disposables for toric lenses?

They are more comfortable Signup and view all the answers

What is a potential consequence of using a toric lens with a thick edge?

Reduced oxygen transmission Signup and view all the answers

What percentage of the population has cylinders over 2.00DC?

7% Signup and view all the answers

What is a characteristic of dynamic stabilization zones?

Thinner edge Signup and view all the answers

What is the significance of knowing the stabilization design of a particular toric lens?

To determine the best stabilization design for a patient Signup and view all the answers

What is a benefit of aspheric optics compared to torics?

Better for small cylinders Signup and view all the answers

What is the function of the upper lid in the 'zipper effect'?

To move up and down vertically Signup and view all the answers

What percentage of soft lenses are torics?

28% Signup and view all the answers

What percentage of patients may benefit from aspheric optics over torics?

7% Signup and view all the answers

What is a potential drawback of using prism ballast for stabilization?

Neovascularization Signup and view all the answers

What is the primary mechanism by which dynamic stabilization zones rely on the blink reflex?

Upper lid moving up and down vertically Signup and view all the answers

What is a benefit of using daily disposables for toric lenses?

Reduced risk of neovascularization Signup and view all the answers

Soft Torics in Optics

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Questions and Answers

What percentage of the population has cylinders over 0.75DC?

What percentage of patients are not fitted with a toric lens when they should be?

What is the primary mechanism by which toric lenses rely on the blink reflex?

What is a potential drawback of using prism ballast for stabilization?

Which of the following is a characteristic of dynamic stabilization zones?

What is the significance of knowing the stabilization design of a particular toric lens?

What is a potential consequence of using a toric lens with a thick edge?

What is an advantage of aspheric optics over torics?

What is a potential advantage of using daily disposables for toric lenses?

What is the name of the design used in Acuvue Oasys for Astigmatism?

Why is the zipper effect important in toric lenses?

What is the primary advantage of dynamic stabilization zones?

Why may patients experience neovascularization with hydrogel prism-ballasted toric lenses?

What is a potential drawback of using toric lenses with a thick edge?

Why are daily disposables an attractive option for toric lenses?

What is the primary purpose of stabilization designs in toric lenses?

Why is it important to know the stabilization design of a particular toric lens?

What is the significance of the 10% statistic mentioned in the text?

How do aspheric optics compare to torics?

What is the purpose of the Accelerated Stabilization Design (ASD) in toric lenses?

What is a characteristic of Soflens daily disposable toric lenses?

What is the purpose of the 'zipper effect' in toric lenses?

What is a benefit of using daily disposables for toric lenses?

What is a potential consequence of using a toric lens with a thick edge?

What percentage of the population has cylinders over 2.00DC?

What is a characteristic of dynamic stabilization zones?

What is the significance of knowing the stabilization design of a particular toric lens?

What is a benefit of aspheric optics compared to torics?

What is the function of the upper lid in the 'zipper effect'?

What percentage of soft lenses are torics?

What percentage of patients may benefit from aspheric optics over torics?

What is a potential drawback of using prism ballast for stabilization?

What is the primary mechanism by which dynamic stabilization zones rely on the blink reflex?

What is a benefit of using daily disposables for toric lenses?

What is a characteristic of the Accelerated Stabilization Design (ASD) in toric lenses?

What is a potential consequence of using a toric lens with a thick edge?

Why may gravity affect the performance of a prism-ballasted toric lens?

What is a benefit of using aspheric optics compared to torics?

What is a characteristic of the 8/4 design in Acuvue Oasys for Astigmatism?

What is a potential drawback of using SiHs compared to hydrogel torics?

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