Glass Prescription

Glass Prescription

• 1.
  GLASS PRESCRIPTION WRITING PROCEDURE Md.AzizulIslam Junior Optometrist (Oculoplasty) Ispahani Islamia Eye Institute & Hospital IIEI&H IIEI&He-mail: [email protected] twiter: @ajijulislam513 , Cell:01724-310486
• 2.
  Aims of Today,sClass… To know…… Why we prescribe glass…  Able to detect hypermetropia & myopia… Subjective correction child patient… The sequence of prescription writing… Practical events of glass prescription writing procedure … IIEI&H
• 3.
  Why We PrescribeGlasses Majority of patients in our OPD comes with complaints of... VISUAL SYMPTOMS OCULAR SYMPTOMS REFFERED SYMPTOMS • BLURRED VISSION • DIPLOPIA • CONFUSION HEADACHE • ASTHENOPIA • EYE STRAIN • OCULAR IRRITATION • PAIN • In child intractable blepharitis & conjunctivitis IIEI&H
• 4.
  Sequence of Prescription HYPEROPIAAge Fogging Refinement methods 1. Less than 3yrs ------- Full Correction 2. 3 to 8yrs -------------- depends on Tropia(Full Gross Value subjective)or Phoria (Full net- optimal, undercorrection) 3. Adults to follow rule of subjective refraction  MYOPIA 1. Thumb rules Normal Patients • -1 to -6 full correction • >-6 undercorrect Esotropia • -6 DS or Above under correct to optimal Exotropia • Over correct Exotropia IIEI&H
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  Hyperopic/Myopic/Astigmatism... Normal Patients  Inchild less than 3 yrs of age = 1.25DS regular  Older than 3 yrs. = all astigmatism should be corrected  Child and young : followed up 6 monthly  Adults : 6 month to yearly  Frequent changes : over correct (0.25D)  Every patients suspected of refractive error should be checked Dry and Wet Refractive error. IIEI&H Sequence of Prescription
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  Some Examples We prescribeSpherical power on the basis of Wet R.E Cylindrical power on the basis of dry R.E  3yrs old boy with dry R.E RE +5.0 DS +1.0 DC@140 LE +6.0 DS+ 0.75 DC@70 wet R.E, RE +4.75 DS + 0.75DC@15 LE +6.25 DS + 0.50 DC@70 Patient with phoria Prescribed glass RE +4.0 DS +0.5 DC@140 LE +5.0DS +0.25DC @ 70  5Yrs Boy with Amblyopia (Dry) R.E RE +0.25 DS + 0.50DC @137 ,VA 6/6 LE +5.25DS + 0.75DC @55 , VA 6/36 Prescribed Glass RE Plano,VA 6/6 LE +3.50DS, VA 6/18 with proper occlusion and follow up IIEI&H
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  CONTD…  High refractiveerrors 12 Yrs old girl with dry R.E, RE -5.25 DS -0.25 DC@35 v 3/60 LE -4.75DS -1.50 DC@155 v 3/60 Wet R.E ,RE -5.0DS -0.50DC@30 LE -4.25DS -1.50DC@150 Prescribed glass RE -4.75 DS v 6/6 LE -4.50DS -0.50DC @160 v 6/9 18yrs old boy with dry R.E, RE -0.25DS -4.75 DC@6 v 3/60 LE -0.50DS -4.0DC@177 v3/60 Wet R.E, RE +0.25DS -4.75DC@05 LE +0.25DS-4.0DC@177 Prescribed glass RE -3.75 DC@05 v 6/9 LE -3.25DC@180v 6/9 IIEI&H
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  CONTD...  Small errorswith eye strain 15 yrs boy with Dry R.E, RE +1.0 DS +0.25 DC@80 v 6/6p LE +1.25 DS +0.50 DC@104 v 6/6 p Wet R.E, RE +3.5DS +0.75DC@70 LE +3.25DS +0.50DC@100 Prescribed glass RE +2.0DS V 6/6 LE+1.75DS v 6/6p (Full +latent Hyper ) 19yrs girl with Dry R.E RE -0.75 DC@87 v 6/6 p LE -0.75DC@92 v 6/6p Wet R.E, RE +0.75 DC@175 LE +0.75 DC@180 Prescribed glass RE -0.50DC@90 v 6/6 LE -0.50 DC@90 v 6/6 (subjective correction) IIEI&H
• 9.
  Glass Prescription Form IIEI&H
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  Reg No: 2831345Date: 26.01.9 Age: 27 yrs Name: Mr.Azizul islam Sph: Spherical power Cyl: Cylindrical Power Axis: Which way the astigmatism Remarks: Unifocal/ Bifocal/Trifocal/Progr essive/ Varilux etc. I.P.D: Inter pupillary Distance V.A.R : VA R/E V.A.L : VA L/E Signature Glass Prescription Point of View
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  Various Prescription Form IIEI&H
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  Some Prescribed Form IIEI&H
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  Remarks  Single Visionglass/Unifocal  Single Vision Lenticular  Bifocal KT/FT  Trifocal/Executive  Progressive  Progressive Essipal  Progressive Transitions  Varilux Liberty  Varilux Comfort  Varilux Airwear  Photochromic Description Coting/Criteria Clear ARC MC HC HMC Titus Crizal UV Crizal Prevencia Crizal Forte UV Tinted
• 14.
  Take Home Messages Usefulfor long Computer user also protect from computer vision syndrome Can be prescribe comfortably to myopic with presbiopia Better lens materials. Today's progressive lenses are available in all the latest lens materials, making them thinner, lighter and more comfortable than ever before.  Progressives made of high-index plastic lens materials can be up to 50% thinner than standard plastic bifocals. IIEI&H
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  References Clinical Procedures inOptometry( journal 2011) A Hand Book of Basic Optometry & Refraction. Optics & Refraction , A K Khurana. Pic: Internet (Google). IIEI&H
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  Question Please…… . IIEI&H
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  IIEI&H