Early detection of Glaucoma A new scoring system By Prof. Dr. Sayed S E H Saif Ex Dean Of NILES Prof of Ophthalmology Cairo University Dr. M Yasser S Saif Lecturer of Ophthalmology Beni Sueif University Dr. Ahmed T S Saif Lecturer of Ophthalmology Fayoum University Table 1: the combined probability of IOP with C/D ratio which predicts the probability of glaucoma in the next 5 years How to use this table Measure the IOP Examination of fundus for C/D ratio Look in the table for the corresponding probability Then see the color of the probability Manage the patient according to the probability then See the Target IOP for each CD ratio C/D ratio 0 Target IOP 20 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 18 17 16 15 14 13 10-12 10 9 8 Management Normal: nothing to be done Possible : observe Probable: treat and observe Highly probable: treatment vigorously & observe Definite: full tolarable treatment, laser or surgery & observe Example Measure the IOP Examination example 0.5 example 25 mmHg of fundus for C/D ratio Look in the table for the corresponding probability (0.22) Then see the color of the probability yellow Manage the patient according to the probability (yellow color is for observation) Target IOP There is no target IOP for this patient because he is under observation not treatment Other examples The following table contain several examples with their probability at the bottom row Case The color of the column indicate the management according to table Probability from the table Target IOP to be reached for patients on Sex Age History 1 2 3 Male 55 DM 5yrs Female 62 +ve Male 58 family history IOP Fundus Field Hypotension Hyperlipidemia Smoker 31 0.3 Normal 540 27 0.4 Normal 520 26 0.1 Normal 510 Probability -6.0 0.480 -3.0 0.304 0.215 Target IOP 16 15 observe Corneal thickness refraction Case 4 5 6 Sex Male Male Female Age 22 70 52 DM 5yrs +ve FH - IOP 22 25 12 Fundus 0.6 0.5 0.7 Normal Normal Normal Corneal thickness 560 510 500 refraction -6.0 - -7.0 Probability 0.217 0.220 0.265 Target IOP observe observe 10 History Field Case no 7 8 9 10 Sex Male Female Male Female Age 8 45 54 62 Steroids drops +ve family history +ve family History +ve family history Black IOP Fundus 42 0.6 32 0.7 20 0.9 26 0.8 Extensive field loss in the central 10 degree of fixation Supperior and inferior arcuate scotomas 555 540 Field Corneal thickness refraction Early field changes 490 Loss above and below the central fixation 510 Mild myopia High myopia Mild myopia history Obese Smoker Moderate myopia Probability Table 1 > 0.7 0.710 0.415 0.475 Target IOP 13 12 9 10 Acknowledgement: Prof Dr Kamal Hamouda: prof of mathmatics, Cairo Universirty Prof Dr Essmat Tharwat : prof of Bio-statistics, Cairo Universirty Dr Wesam Salah: lecturer of mathmatics, NILES, Cairo Universirty Dr Hamadan A. S. El Shemairy: Researcher of Physics, NILES, Cairo Uni For more information : Web Page: www.sayedsaif.com Email: [email protected] [email protected] Tel: 010 66 99 288 , 012 34 56 757
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