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"POLAR EYE GRIDS"© |
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PEG : The Computer Model |
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Bradley N. Zajac, O.D. |
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Proposal for a New Nomenclature System |
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"POLAR EYE GRIDS"© PEG :The Clinical Model |
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Composed of : The "Polar Corneal Grid"ã (PCG) The "Polar Iris Grid"ã (PIG) The "Polar Kerato-conjunctival Grid"© (PKG) The "Polar Lenticular Grid"ã (PLG The "Polar Optic Nerve Grid"ã (PONG) The "Polar Palpebral-conjunctival Grid"© (PPG The "Polar Quantitative Recording Macular Grid"© The "Polar Retinal Grid"ã (PRG) The "Polar Scleral Grid"ã (PSG) The "Polar Vitreous Grid"ã (PVG |
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Bradley N. Zajac, O.D. |
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Dr.?@PolarEyeGrids.com |
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Contributing Authors |
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Robert Arnold
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Robert Buckingham, O.D. |
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Martin F. Guinta, O.D. |
John Moran, O.D., Ph.D. | |||||
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James Reeves, O.D. |
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SUMMARY PEG is a new nomenclature system of ocular mapping and mathematical analysis developed for clinical use by eye care professionals. PEG is a collection of individually modified polar grids to quantitatively map and describe normal ocular anatomy, and quantitatively map and document abnormal pathology of the conjunctiva, cornea, iris, lens, macula, optic nerve, retina, choriod, uveal tract, sclera, and vitreous. PEG mapping utilizes "polar azimuthal equidistant arithmetic construction" to indicate true ocular direction and true ocular distance, as measured from each individual grids unique pole of projection. PEG uses a common "Ocular Compass"© to represent direction components, and circular lines of "Ocular Latitude"© to represent distance components, combining to form 2-dimensional polar eye grids, described with simple alphanumeric notations, to map the respective 3-dimensional surfaces of each ocular structure. PEG introduces new quantitative nomenclature without using "clock" terminology, and introduces new mathematical analysis of the eye. PEG is comprised of the (a) "Polar Corneal Grid"©(PCG), (b) "Polar Iris Grid"©(PIG), (c) "Polar Kerato-conjunctival Grid"©(PKG), (d)"Polar Lenticular Grids"©(PLG), (e)"Polar Optic Nerve Grid"©(PONG), (f) "Polar Palpebral-conjunctival Grid"©(PPG), (g)"Polar Quantitative Recording Macular Grid"©(PQR Macular Grid), (h) "Polar Retinal Grid"©(PRG), (i)"Polar Scleral Grids"©(PSG), and (j) "Polar Vitreous Grids"©(PVG).
PEG is a clinical tool and a theoretical tool. PEG is a "dual" model for both clinical and theoretical use. The clinical tool termed "PEG: The Clinical Model" is the subject of this ONLINE PEER-REVIEW. "PEG: The Clinical Model" demonstrates quantitative ocular mapping and how to describe ocular pathology in alphanumeric terms, minimizing the need to draw pictures. This is especially useful with computerized record keeping. Clinical PEG also gives practitioners a mathematical perspective to ocular tissues, especially in terms of comparative areas and percentages. The theoretical tool termed "PEG: The Computer Model" is not the subject of this ONLINE PEER-REVIEW. "PEG: The Computer Model" is a treatise describing mathematical analysis and 3D computer modeling of ocular tissues. This dissertation generates proprietary and copyrighted data-table keys to translate ocular imaging of various types (e.g.: photographs, visual fields, a-scan, b-scan, MRI's, OCT's, x-rays, auto-keratometry, etc.) into spherical coordinates, in ordered triples, for computerized mapping of ocular tissues. "PEG: The Computer Model" also outlines methods and strategies for developing computer assisted programs utilizing PEG nomenclature and PEG data table keys. PEG nomenclature and data table keys converting PEG coordinates into spherical coordinates are under copyright by Bradley N. Zajac, O.D. See Copyright Notice. |
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Introductory topics:
(1.0)"PEG Virtual Eye"© Download"
(1.A) PREFACE to PEG: A
Corneal Grid
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