Clinical Case in Contact Lenses, 1e by Ronald K. Watanabe OD FAAO

By Ronald K. Watanabe OD FAAO

This scientific guide provides universal touch lens issues of step by step remedy recommendations. 40 case reviews disguise quite a number difficulties from easy becoming dilemmas to hostile results of touch lens put on. each one case starts with a presentation of indicators and symptoms, together with a case background and aim try findings and ends with the author's prognosis and dialogue.

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Extra resources for Clinical Case in Contact Lenses, 1e

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00 D. Because the right eye wears a steeper, less minus lens, it was effectively underminused, causing distance blur. The left eye was overminused by the same amount, but because the patient is young, he could accommodate through the extra minus and see clearly. Observation of the lens fit is also consistent with a lens switch. Because the right eye wears a steeper lens, it has more central clearance and perhaps centers better on the eye. The left eye has a flatter fit with apical touch and more decentration.

Edrington TB. Rigid gas-permeable lenses for astigmatism. In: Hom MM (ed). Manual of Contact Lens Prescribing and Fitting with CD-ROM, 2nd ed. Boston: Butterworth–Heinemann, 2000:143–165. CASE 1-8 Unstable Bitoric Rigid Gas-Permeable Lens Figure 1-8 History Patient MA, a 32-year-old Hispanic female, presents for a progress evaluation of her new rigid gas-permeable (RGP) bitoric contact lenses (CL). She reports having difficulty adapting to her lenses, which move a lot and give her unstable vision.

A careful case history and good patient education can prevent recurrence of this problem. References 1. Bennett ES, Henry VA. RGP lens power change with abrasive cleaner use. Int Contact Lens Clin. 1990;17(3):152–153. 2. Carrell BA, Bennett ES, Henry VA, Grohe RM. The effect of rigid gas-permeable lens cleaners on lens parameter stability. J Am Optom Assoc. 1992;63(3):193–198. Blurry Vision with Rigid Gas-Permeable Lenses 65 3. O’Donnell JJ. Patient-induced power changes in rigid gas-permeable contact lenses: A case report and literature review.

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