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Case Reports: Toric GP Contact Lenses

Case Reports: Toric GP Contact Lenses. Ron Watanabe, OD. 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:

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Case Reports: Toric GP Contact Lenses

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  1. Case Reports:Toric GP Contact Lenses Ron Watanabe, OD

  2. 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

  3. Case #1: Corneal Topography

  4. 41.75 45.37 175 85 -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 -3.25 44.62 -6.25

  5. Right eye: Spherical GP • Spherical GP Boston EO 7.90 / -1.50 / 9.5 VA: 20/15

  6. 8.13 / -3.25 7.56 / -6.25 Boston EO / 9.5 VA 20/25 Spherical GP Left eye: Spherical vs. Bitoric Bitoric GP

  7. 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 @ 82 OS 41.75 / 42.75 @ 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

  8. Case #2: AT • Keratometry: OD 40.50 / 43.50 @ 82 OS 41.75 / 42.75 @ 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

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