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Showing posts with the label Introduction to Dispensing Optics

Dispensing Optics - Part I

INTRODUCTION OF DISPENSING OPTICS 1.LIGHT 2.OPHTHALMIC LENSES 3.INTERACTIONS OF LIGHT WITH OPHTHALMIC LENSES 4.SIGN CONVENTIONS DISPENSING OPTICS Dispensing Optics is science of dispensing eyeglasses and contact lenses based on the prescription of an eye care practitioner. GEOMETRICAL OPTICS Light travels in straight line, Laws of reflection and Laws of refraction. Wave Optics - Interference, Diffraction, Polarization. VISUAL PERCEPTIONS - 4 types - Light sense, Form sense, Colour Sense, Sense of Contrast. OPTICAL DISPENSING is also an art - that teaches how to make the spectacle frame, make contact with the patient’s face comfortably, looks good and also serves desired function. The art can be learned and mastered by PRACTICE AND EXPERIENCE. Both Anthropometric and Cosmetic demands are to be met. Process of dispensing from selecting a frame to taking measurements and fitting eyewear on the patient’s face. Even the best refraction may not provide desired results if the lenses are not d...