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. 41.7545.37 85 -3.50 -4.25 175 41.7545.37 -3.50 -3.50 -7.75 -7.00 0.250.250.750.75 41.5044.62-3.25-6.25 175

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

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

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 @ 82OS 41.75 / 42.75 @ 105 Refraction: OD +4.00 -3.75 x 167OS +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 / 9.420/25, 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