Errors of Refraction LEC 8 (IPD) PDF

‫قياس المسافة البؤبؤية للعين‬ INTERPUPILLARY DISTANCE I.P.D OPTOMETRIST : ALAA KHAMMAS IPD, INTERPUPILLARY DISTANCE IS THE DISTANCE IN MM BETWEEN EACH OF THE HUMAN EYE PUPILS. INTERPUPILLARY IS A COMMON MEASUREMENT BY IPD RULER AND BINOCULARS. THE AVERAGE INTERPUPILLARY DISTANCE IS BETWEEN 58 A...

‫قياس المسافة البؤبؤية للعين‬ INTERPUPILLARY DISTANCE I.P.D OPTOMETRIST : ALAA KHAMMAS IPD, INTERPUPILLARY DISTANCE IS THE DISTANCE IN MM BETWEEN EACH OF THE HUMAN EYE PUPILS. INTERPUPILLARY IS A COMMON MEASUREMENT BY IPD RULER AND BINOCULARS. THE AVERAGE INTERPUPILLARY DISTANCE IS BETWEEN 58 AND 72MM.  PURPOSE OF MEASURING I.P.D IT IS TO ALIGN THE OPTICAL CENTER OF THE LENS TO THE GEOMETRIC CENTER OF THE FRAME  How it is measured Measurement are done by using I.P.D.ruler NASAL SIDE TEMPORAL SIDE  METHODS OF MEASURE IPD 1.FROM THE CENTER OF PUPIL RIGHR EYE TO THE CENTER OF PUPIL OF LEFT EYE. 2- FROM THE LIMBUS OF RIGHT EYE IN TEMPORAL SIDE TO THE LIMBUS 0F LEFT EYE IN NASAL SIDE 3- FROM THE LIMBUS OF RIGHT EYE IN NASAL SIDE TO THE LIMBUS 0F LEFT EYE IN TEMPORAL SIDE In the CASE that there is a squint in the eye, we close the healthy eye, so the path of the squinted eye will be corrected, so we measure from the middle of its pupil to the middle of the base of the nose, and then we close the squinted eye and measure from the middle of the pupil of the healthy eye to the middle of the base of the nose and collect the two readings...  30mm MIDLINE NOSE  30 + 30 = 60mm 30mm 5-In the case of a missing eye, we measure from the center of the pupil of the other eye to the middle of the base of the nose and multiply it by.. Lost eye 32 x 2 =64 mm WITH IPD MESURE THE PATIENT LOOK AT THE CHART OF V.A TYPES OF IPD - IPD FOR DISTANCE - IPD FOR NEAR * IPD NEAR is the same of IPD for far just reduce it 2mm.  THANK YOU BEST WISHES ALAA KHAMMAS