5.1.1: Chooses, fits & orders soft lenses

Question 1

What are the features of SS Serima sphere?

Answer 1

• SiHy - ofilcon B
• Dk/t at -3.00: 171
• UV blocker
• BC 8.7mm, Dia 14.1mm
• 47% water content
• -12 to +8, 0.50 steps at +/- 6.00
• sphere only

Question 2

What are the features of SS Linarial/Coopervision MyDay?

Answer 2

• SiHy - stenfilcon A
• Dk/t at -3.00: 100
• UV blocker
• BC 8.4mm, Dia 14.2mm
• 54% water content
• -12 to +8, 0.50 steps at +5.50 and -6.50

Question 3

What are the features of SS Umere/Coopervision Clariti 1 day?

Answer 3

• SiHy - somofilcon A
• Dk/t - 86
• UV blocker
• BC 8.6mm, Dia 14.1mm
• 47% water content
• -10 to +8

Question 4

What are the features of Acuvue Moist 1day?

Answer 4

• Hydrogel - etafilcon A
• Dk/t - 33
• UV blocker
• BC 8.5 or 9.0mm, Dia 14.2
• 58% water content
• +6 to -12

Question 5

What are the features of Acuvue Oasys 1day?

Answer 5

• SiHy - senofilcon A
• Dk/t - 121
• UV blocker
• BC 8.5 or 9.0, Dia 14.2
• 38% water content
• -12 to +6

Question 6

What are the features of SS Linarial Toric/Coopervision MyDay toric?

Answer 6

• SiHy - stenfilcon A
• Dk/t @ -3.00: 80
• BC 8.6mm, Dia 14.5mm
• 54% water content
• UV blocker
• +8 to -10, 0.50 steps at +/-6.00
• Cyl: -0.75, -1.25, -1.75, -2.25, 10-180° (10° steps)

Question 7

What are the features of SS Umere toric/Coopervision Clariti 1day toric?

Answer 7

• SiHy - somofilcon A
• Dk/t @-3.00: 57
• BC 8.6mm, Dia 14.3mm
• 56% water content
• UV blocker
• Marking at 6 o’clock
• +4 to -9 (0.50 steps from -6.50)
• Cyl: -0.75 to -2.25, 10, 20, 70, 80, 90, 100, 110, 120, 160, 170, 180

Question 8

Describe Coopervision Aquaform Technology?

Answer 8

• Attracts & binds water throughout lens material to retain moisture even during times of reduced blinking
• Forms hydrogen bonds with water molecules to lock water into lens –> highly wettable surface for comfortable wearing experience
• Long chains mean less raw silicon needs to be used to optimise oxygen transmissibility & increased oxygen levels keep eyes clear, white & healthy
• Reduced silicon content also results in optimum modulus making lens softer & more flexible to enhance comfort

Question 9

Describe Coopervision Aberration Neutralising System?

Answer 9

Used in CV Avaira Vitality (SS Uvicia), Biofinity (SS Opteyes), MyDay (SS Linarial).
- Lens front surface design is customised to px’s Rx to help neutralise impact of spherical aberration in eye
- Incoming light rays converge for better focus & sharp vision

Question 10

Describe Coopervision Optimised Toric Lens Geometry?

Answer 10

Stabilises lens
1. Uniform horizontal ISO thickness
Improves lens stability and reduces rotation for better visual acuity
2. Smooth, continuous ballast
Maximizes comfort during eyelid interaction
3. Larger toric optic zone - Provides clear visual acuity
4. Optimized ballast toric design - Provides a stable, comfortable fit

Question 11

What are the features of SS Linarial MF/ Coopervision MyDay MF?

Answer 11

• SiHy
• Dk/t @-3.00: 100
• Centre Near
• +8 to -10, -10.50 to -12
• Low (+0.75 to +1.25 add)
• Medium (+1.50 to +1.75 add)
• High (+2.00 to +2.50 add)

Question 12

What are the features of SS Umere MF/Coopervision Clariti 1 day MF?

Answer 12

• SiHy - somofilcon A
• Dk/t @-3.00: 86
• BC 8.6mm, Dia 14.3mm
• 56% water content
• UV blocker
• +5.00 to -6.00
• Low add up to +2.25
• High add +2.50 to +3.00

Question 13

What are the features of Alcon Dailies Total 1?

Answer 13

• SiHy - delfilcon A
• Dk/t @ -3.00: 156
• BC 8.5mm, Dia 14.1mm
• +6 to -6, -6.50 to -12 (0.50 steps)
• Low H20 content, High 02

Question 14

Describe Alcon Water Gradient Technology?

Answer 14

increased water content near outer lens surface, so comfortable & cushioned on eye

Question 15

Describe Alcon SmarTears Technology? Toric stabilisation

Answer 15

• Release phosphatidylcholine (PC) - phospholipid found naturally in tears that helps stabilise lipid layer of tear film
• 8/4 stabilisation tecnology
• Prism ballast

Question 16

What are the features of SS Opteyes/Coopervision Biofinity? Monthly

Answer 16

• SiHy - comfilcon A
• BC 8.6mm, Dia 14.0 mm
• Dk/t @-3.00: 160
• 48% water content
• Licensed for EW
• +8 to -12, 0.50 steps from +/- 6.50
• XR range, XR toric (up to -5.75DC cyl), MF (centre D & N)
• Biofinity toric MF available
• Prism ballast, marking at 6 o’clock

Question 17

Describe SiHy as a material?

Answer 17

• SiHy – Blend hydrogel characteristics (wetting, comfort, movement) with Silicone characteristic (High oxygen
  permeability. Surface treated due to hydrophobic nature of silicone
• SiHy – More prone to lipid deposition, stiffer less flexible lenses, thicker, high modulus. SEAL mechanical more
  common in SiHy due to high modulus
• SiHy – More Silicone higher Dk – less water
• Daily, 2 weekly, Monthly, Extended Wear.

Question 18

Describe SS Omnipurpose Solution?

Answer 18

• Manufacturer: EM Pharma
• Store lenses in closed lens case up to 7 days
• Use within 60 days
• Soak for 4 hours
• EDTA - chelating agent (prevents proteins depositing on lens surface, assists in protein removal)
• PHMB - disinfectant/preservatie (cleans lens - destroys biocides (life))
• Hydroxyethylcellulose - wetting agent (similar to comfort drops of tear supplements)
• Hyaluronic acid - lubricates & protects CL from adhesion of lipids - more comfort throughout day
• Sodium phosphate - cleaning agent/ buffer (helps maintain pH of soln close to neutral, helps maintain comfort)
• Sodium chloride - tonicity adjuster (maintains salt levels)
• Sodium hydroxide
• Purified water

Question 19

Describe SS Unipurpose solution?

Answer 19

• Manufacturer: Avizor
• Store in closed lens case up to 30days
• Use within 90 days
• Soak for 4 hours
• Sodium hyaluronate - wetting agent (provides lubrication & comfort)
• EDTA - chelating agent (prevents Na bound particles from depositing on lens surface)
• Polaxamer - surfactant cleaner
• Polyhexanide - disinfectant/preservative

Question 20

Describe Bausch & Lomb BioTrue solution?

Answer 20

• Store lenses up to 30days
• Use within 90 days
• Soak for 4 hours
• Hyaluronan - lubricant
• Sulfobetaine - disinfectant
• Polaxamine - surfactant (soap)
• Boric acid - disinfectant
• Sodium borate - buffer
• Edetate disodium - preservative
• Sodium chloride - tonicity adjuster - maintains salt levels
• Polyaminopropyl biguanide (PAPB) - preservative
• Polyquaternium - preservative

Question 21

Describe Hydrogen Peroxide - Alcon AO Sept Plus with Hydraglyde?

Answer 21

• Preservative free
• Use within 90 days
• Hydrogen peroxide 3%
• Phosphonic acid - stabiliser
• Sodium chloride
• Phosphate - buffer system
• Polaxamer - surfactant
• Hydraglyde Moisture Matrix - reconditioning agent
  1. Wash & dry hands & place lens into case holder & rinse w/ soln
  2. Fill case up to line w/ fresh soln. Place lens holder into case & tighten lid. Do not shake.
  3. Leave case upright for 6 hours minimum to neutralise. Bubbling effect caused by neutralising disc helps mechanically clean lenses. Keep case at room temp
  4. Rinse with saline before putting in eye
  Don’t let hydrogen peroxide come in direct contact with skin or eyes

Question 22

Describe comfort drops: Hycosan Extra, Hycosan Plus, Hycosan Dual, Hyloforte?

Answer 22

• Hycosan Extra
  o Sodium Hyaluronate 0.2%. – stores and absorbs moisture, lubricates and
  filters inflammatory molecules
  o Preservative Free
• Hycosan Plus
  o Sodium Hyaluronate 0.1% - stores and absorbs moisture, lubricates and
  filters inflammatory molecules
  o Dexpanthenol 2% - Lens moisturiser, creates a barrier inhibiting moisture
  evaporation and therefore prevents lens dehydration
  o Preservative Free
• Hycosan Dual
  o Sodium Hyaluronate 0.1% - stores and absorbs moisture, lubricates and
  filters inflammatory molecules
  o Ectoin – Flushes allergens from the eye and protects allergens from
  entering the tear film
  o Preservative Free
• Hyloforte
  o Hyaluronic Acid 0.2% - Aids in epithelial healing, can retain water making it
  a valuable wetting agent for dry eyes.
  o Preservative Free

Question 23

Describe antimicrobiral flat case or barrel case for CLs? Describe protein remover tablets?

Answer 23

Antimicrobial Flat Case or Barrel Case: Contains Silver Ions on the inner walls of the case,
making it more resistant to bacteria.

Protein Remover Tablets: Enzymatic Cleaner that removes Protein build up in reusable
lenses. Tablets are placed in multipurpose sol with the CLs and left overnight.

Question 24

Describe contact lens fitting routine?