Case Reports: Toric GP Contact Lenses

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Case ReportsToric GP Contact Lenses

• Ron Watanabe, OD

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Case 1 SR

• 25-yo Asian medical student
• Current soft lens wearer
• OD Preference sphere
• OS Preference Toric
• VA w/CL OD 20/20, OS 20/50 unstable
• Unhappy with vision in her left eye
• Subjective Refraction
• OD -1.75 -0.75 x 005, 20/20
• OS -3.50 -4.25 x 175, 20/30
• Biomicroscopy unremarkable

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Case 1 Corneal Topography
4
41.75
45.37
85
175
-3.50 -4.25 175
41.75
45.37
-3.50
-7.75
-3.50
-7.00
0.25
0.25
0.75
0.75
41.50
44.62
-3.25
-6.25
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Right eye Spherical GP

• Spherical GP

Boston EO 7.90 / -1.50 / 9.5 VA 20/15
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Left eye Spherical vs. Bitoric
Spherical GP
Bitoric GP
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Case 2 AT

• 39 yo Hispanic male salesman
• Wears soft torics decreased VA and comfort, eyes
  are always red, has oily tears
• HVID 11.5 mm
• Keratometry
• OD 40.50 / 43.50 _at_ 82
• OS 41.75 / 42.75 _at_ 105
• Refraction
• OD 4.00 -3.75 x 167, 20/25
• OS 2.75 -1.25 x 13, 20/25
• Lens designs?
• OD back surface toric
• OS spherical

3 D corneal cyl
1 D corneal cyl
3.75 D refractive cyl
1.25 D refractive cyl
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Case 2 AT

• Keratometry
• OD 40.50 / 43.50 _at_ 82 OS 41.75 / 42.75 _at_ 105
• Refraction
• OD 4.00 -3.75 x 167 OS 2.75 -1.25 x 13
• Right lens BST Optimum Extra
• (n 1.431 28 over-correction 3.84 D)
• 40.25 (8.33) / 4.50 / 9.4
• 42.75 (7.89) 20/25, OR -0.25 DS
• Left lens spherical
• 41.75 (8.08) / 2.75 / 9.4 20/25, OR -0.25 -0.50
  x 15
• Lens fit
• Lid attachment with apical alignment and
  spherical fluorescein patterns, good comfort,
  less redness towards the end of the day