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prism_stacking [2025/03/01 04:55] – Scott Larsonprism_stacking [2025/06/07 02:49] (current) – [Table] Scott Larson
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-====== Value of Two Prisms Stacked in the Same Direction ======+====== Value of Two Stacked Prisms ====== 
 +**The prisms are pointing in the same direction **
 ===== Calculator ===== ===== Calculator =====
- +[[https://eyefixer.org/value-of-two-stacked-prisms/|Click Here]]
-<html> +
-<head> +
-    <title>Stacked Prism Value Lookup</title> +
-    <style> +
-        body { +
-            font-family: Arial, sans-serif; +
-            margin: 20px; +
-            padding: 20px; +
-        } +
-        h2 { +
-            color: #333; +
-        } +
-        label { +
-            font-weight: bold; +
-        } +
-        input, button { +
-            margin-top: 5px; +
-            padding: 8px; +
-            font-size: 16px; +
-        } +
-        p { +
-            font-size: 18px; +
-            font-weight: bold; +
-            color: blue; +
-            margin-top: 10px; +
-        } +
-    </style> +
-    <script> +
-        const prismTable = { +
-            10: {1: 11, 2: 12, 3: 13, 4: 14, 5: 15, 6: 16, 7: 17, 8: 19, 9: 20, 10: 21, 12: 23, 14: 25, 16: 28, 18: 30, 20: 33, 25: 39, 30: 46, 35: 53, 40: 60, 45: 68, 50: 77}, +
-            12: {1: 13, 2: 14, 3: 15, 4: 16, 5: 17, 6: 19, 7: 20, 8: 21, 9: 22, 10: 23, 12: 25, 14: 28, 16: 30, 18: 33, 20: 35, 25: 42, 30: 49, 35: 57, 40: 65, 45: 74, 50: 84},  +
-            14: {1: 15, 2: 16, 3: 17, 4: 18, 5: 20, 6: 21, 7: 22, 8: 23, 9: 24, 10: 25, 12: 28, 14: 30, 16: 33, 18: 35, 20: 38, 25: 45, 30: 53, 35: 61, 40: 70, 45: 80, 50: 91},  +
-            16: {1: 17, 2: 18, 3: 19, 4: 21, 5: 22, 6: 23, 7: 24, 8: 25, 9: 27, 10: 28, 12: 30, 14: 33, 16: 36, 18: 38, 20: 41, 25: 49, 30: 57, 35: 66, 40: 76, 45: 87, 50: 100},  +
-            18: {1: 19, 2: 20, 3: 22, 4: 23, 5: 24, 6: 25, 7: 26, 8: 28, 9: 29, 10: 30, 12: 33, 14: 35, 16: 38, 18: 41, 20: 44, 25: 52, 30: 61, 35: 71, 40: 82, 45: 95, 50: 110}, +
-            20: {1: 21, 2: 23, 3: 24, 4: 25, 5: 26, 6: 27, 7: 29, 8: 30, 9: 31, 10: 33, 12: 35, 14: 38, 16: 41, 18: 44, 20: 47, 25: 56, 30: 66, 35: 76, 40: 89, 45: 104, 50: 122}, +
-            25: {1: 27, 2: 28, 3: 29, 4: 30, 5: 32, 6: 33, 7: 35, 8: 36, 9: 37, 10: 39, 12: 42, 14: 45, 16: 49, 18: 52, 20: 56, 25: 66, 30: 78, 35: 93, 40: 110, 45: 133, 50: 165}, +
-            30: {1: 32, 2: 33, 3: 35, 4: 36, 5: 38, 6: 39, 7: 41, 8: 42, 9: 44, 10: 46, 12: 49, 14: 53, 16: 57, 18: 61, 20: 66, 25: 78, 30: 94, 35: 114, 40: 141, 45: 183, 50: 265}, +
-            35: {1: 37, 2: 39, 3: 40, 4: 42, 5: 44, 6: 45, 7: 47, 8: 49, 9: 51, 10: 53, 12: 57, 14: 61, 16: 66, 18: 71, 20: 76, 25: 93, 30: 114, 35: 144, 40: 195, 45: 315}, +
-            40: {1: 43, 2: 45, 3: 46, 4: 48, 5: 50, 6: 52, 7: 54, 8: 56, 9: 58, 10: 60, 12: 65, 14: 70, 16: 76, 18: 82, 20: 89, 25: 110, 30: 141, 35: 195, 40: 339}, +
-            45: {1: 48, 2: 50, 3: 52, 4: 54, 5: 56, 6: 59, 7: 61, 8: 63, 9: 66, 10: 68, 12: 74, 14: 80, 16: 87, 18: 95, 20: 104, 25: 133, 30: 183, 35: 315}, +
-            50: {1: 54, 2: 56, 3: 58, 4: 61, 5: 63, 6: 66, 7: 68, 8: 71, 9: 74, 10: 77, 12: 84, 14: 91, 16: 100, 18: 110, 20: 122, 25: 165, 30: 265} +
- +
-        }; +
- +
-        function lookupValue() { +
-            let prism1 = document.querySelector('input[name="prism1"]:checked').value; +
-            let prism2 = document.querySelector('input[name="prism2"]:checked').value; +
-             +
-            prism1 = parseInt(prism1); +
-            prism2 = parseInt(prism2); +
-             +
-            if (prismTable[prism2] && prismTable[prism2][prism1] !== undefined) { +
-                document.getElementById("result").innerHTML = `Result: <strong>${prismTable[prism2][prism1]} Prism Diopters</strong>`; +
-            } else { +
-                document.getElementById("result").innerText = "Invalid input"; +
-            } +
-        } +
-    </script> +
-</head> +
-<body> +
-    <h2>Prism Value of Two Prisms Stacked in the Same Direction</h2> +
-    <label>Select Initial Prism (PD):</label> +
-    <br> +
-    <input type="radio" name="prism2" value="10"> 10 +
-    <input type="radio" name="prism2" value="12"> 12 +
-    <input type="radio" name="prism2" value="14"> 14 +
-    <input type="radio" name="prism2" value="16"> 16 +
-    <input type="radio" name="prism2" value="18"> 18 +
-    <input type="radio" name="prism2" value="20"> 20 +
-    <input type="radio" name="prism2" value="25"> 25 +
-    <input type="radio" name="prism2" value="30"> 30 +
-    <input type="radio" name="prism2" value="35"> 35 +
-    <input type="radio" name="prism2" value="40"> 40 +
-    <input type="radio" name="prism2" value="45"> 45 +
-    <input type="radio" name="prism2" value="50"> 50 +
-    <br><br> +
-    <label for="prism1">Select Prism Stacked On Top (PD): </label> +
-    <br> +
-    <input type="radio" name="prism1" value="1"> 1 +
-    <input type="radio" name="prism1" value="2"> 2 +
-    <input type="radio" name="prism1" value="3"> 3 +
-    <input type="radio" name="prism1" value="4"> 4 +
-    <input type="radio" name="prism1" value="5"> 5 +
-    <input type="radio" name="prism1" value="6"> 6 +
-    <input type="radio" name="prism1" value="7"> 7 +
-    <input type="radio" name="prism1" value="8"> 8 +
-    <input type="radio" name="prism1" value="9"> 9 +
-    <input type="radio" name="prism1" value="10"> 10 +
-    <input type="radio" name="prism1" value="12"> 12 +
-    <input type="radio" name="prism1" value="14"> 14 +
-    <input type="radio" name="prism1" value="16"> 16 +
-    <input type="radio" name="prism1" value="18"> 18 +
-    <input type="radio" name="prism1" value="20"> 20 +
-    <input type="radio" name="prism1" value="25"> 25 +
-    <input type="radio" name="prism1" value="30"> 30 +
-    <input type="radio" name="prism1" value="35"> 35 +
-    <input type="radio" name="prism1" value="40"> 40 +
-    <input type="radio" name="prism1" value="45"> 45 +
-    <input type="radio" name="prism1" value="50"> 50 +
-    <br><br> +
- +
-    <button onclick="lookupValue()">Lookup</button> +
-    <br> +
-    <br> +
-    <p id="result"></p> +
-</body> +
-</html> +
- +
-<button type="primary" size="sm">[[prism_stacking|Reset Calculator]]</button> +
 ==== Table ==== ==== Table ====
- 
  
 |                |  **1st Prism**                                          ||||| |                |  **1st Prism**                                          |||||
Line 123: Line 13:
 | **50Δ**        | 77              | 122      | 256      |          |          | | **50Δ**        | 77              | 122      | 256      |          |          |
  
-Adapted From: {{::ophthalmic_prisms_measurement_errors_guyton_1983.pdf |Thompson & Guyton. Ophthalmic Prisms: Measurement Errors and How to Minimize Them. Ophthalmology 1983;90:204-2010}}+Adapted From: [[https://1drv.ms/b/c/31d83ae8e55e0542/ES49Ej_-iyJHmmIL8jmZFEgBpwde_sp-n8pyxpMYBiZUOQ?e=uJIX5C |Thompson & Guyton. Ophthalmic Prisms: Measurement Errors and How to Minimize Them. Ophthalmology 1983;90:204-2010]] 
 {{tag>strabismus prism calculator}} {{tag>strabismus prism calculator}}