soft_lens_solutions_flashcards

Question 1

What are the key ingredients in CooperVision Hycare solution?

Answer 1

CooperVision Hycare contains Polyhexanide (disinfectant and preservative), Sodium Hyaluronate (moisture absorption and lubrication), Sodium Chloride (maintains tear film tonicity), Sodium Phosphate (balances pH), Poloxamer (surfactant), EDTA, and water.

Question 2

What is the function of Polyhexanide in soft lens solutions?

Answer 2

Polyhexanide acts as a disinfectant and preservative, preventing the growth of harmful microorganisms on soft contact lenses.

Question 3

What is the role of Sodium Hyaluronate in CooperVision Hycare?

Answer 3

Sodium Hyaluronate stores and absorbs moisture, lubricates the lenses, and filters inflammatory molecules to reduce discomfort.

Question 4

Why is Sodium Chloride included in soft lens solutions?

Answer 4

Sodium Chloride helps maintain the tonicity of the solution, ensuring comfort and avoiding conjunctival hyperaemia during lens wear.

Question 5

What is Poloxamer used for in CooperVision Hycare?

Answer 5

Poloxamer acts as a surfactant and cleaning agent, helping to remove debris and protein deposits from the lenses.

Question 6

What is the recommended procedure for using CooperVision Hycare solution?

Answer 6

Rub and rinse the lenses for 15-20 seconds, and soak them for at least 4 hours or overnight to ensure proper disinfection.

Question 7

What are the key ingredients in CooperVision All-in-one Light solution?

Answer 7

CooperVision All-in-one Light contains Polyhexanide, Sodium Chloride, Sodium Phosphate, Poloxamer, EDTA, and water.

Question 8

How should lenses be treated using CooperVision All-in-one Light solution?

Answer 8

Rub and rinse the lenses for 15-20 seconds, and then soak them for at least 4 hours or overnight for thorough disinfection.

Question 9

What is saline solution used for in soft lens care?

Answer 9

Saline solution is used for rinsing debris from soft contact lenses, but it should not be used for disinfection.

Question 10

What are the key ingredients in CooperVision Refine One-Step solution?

Answer 10

CooperVision Refine One-Step contains 3% Hydrogen Peroxide, Sodium Chloride, and Sodium Phosphates.

Question 11

How does CooperVision Refine One-Step solution work without neutralization?

Answer 11

The built-in neutralizer converts hydrogen peroxide to oxygen and water, allowing disinfection without a separate neutralization step.

Question 12

What are protein remover tablets used for in contact lens care?

Answer 12

Protein remover tablets are enzymatic cleaners used to remove protein build-up from reusable lenses when soaked overnight with the lenses.

Question 13

What is the function of Hycosan Extra in comfort drops?

Answer 13

Hycosan Extra contains Sodium Hyaluronate 0.2%, which helps store and absorb moisture, lubricates the lenses, and is preservative-free.

Question 14

What additional ingredients does Hycosan Plus contain, and what do they do?

Answer 14

Hycosan Plus contains Sodium Hyaluronate 0.1% and Dexpanthenol 2%. Dexpanthenol acts as a lens moisturizer, preventing dehydration by creating a moisture barrier.

Question 15

How does Hycosan Dual help manage allergies?

Answer 15

Hycosan Dual contains Sodium Hyaluronate 0.1% and Ectoin, which helps flush allergens from the eyes and protect the tear film from allergens.

Question 16

What are the benefits of Hyloforte in comfort drops?

Answer 16

Hyloforte contains Hyaluronic Acid 0.2%, which aids in epithelial healing and retains moisture, making it a valuable wetting agent for dry eyes. It is preservative-free.

Question 17

What is the purpose of antimicrobial flat cases or barrel cases?

Answer 17

Antimicrobial flat or barrel cases contain silver ions on their inner walls, which provide resistance to bacterial growth, ensuring cleaner storage for lenses.

Question 18

What is the significance of the Efron Grading Scale in contact lens health assessment?

Answer 18

The Efron Grading Scale is used to assess various aspects of eye health, such as conjunctival redness, neovascularization, and corneal staining, during contact lens fitting and aftercare.

Question 19

What does keratometry help determine when fitting soft contact lenses?

Answer 19

Keratometry measures the curvature of the cornea and helps determine the appropriate base curve for soft contact lenses.

Question 20

What are the advantages of Hydrogel contact lenses?

Answer 20

Hydrogel lenses have thinner designs and offer better initial comfort.

Question 21

What are the disadvantages of Hydrogel contact lenses?

Answer 21

Hydrogel lenses have lower oxygen permeability, increasing the risk of hypoxia and eye infections. They are also not ideal for extended or overnight wear.

Question 22

What are the advantages of Silicone Hydrogel contact lenses?

Answer 22

Silicone Hydrogel lenses allow up to 5 times more oxygen to pass through the lens than traditional Hydrogel lenses. They are suitable for extended wear and longer durations.

Question 23

What are the disadvantages of Silicone Hydrogel contact lenses?

Answer 23

Silicone Hydrogel lenses tend to be more expensive and are generally thicker, which might affect initial comfort.

Question 24

What are the main steps in the contact lens fitting routine?

Answer 24

The main steps include taking a detailed history and symptoms, assessing POH, FOH, and PGH, performing anterior eye measurements, keratometry, using the Efron Grading Scale for health assessment, and fitting the lenses based on comfort, movement, and refraction.