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TYPES OF
OPHTHALMIC LENS
BY SUJIT KUMAR
saraswati-eye-care.business.site
(-) CONCAVE/(+)
CONVEX
• COMPOUND NO =
SPHERICAL+CYLINDRICAL
• +1.00/+1.00*180
• -1.50/-2.00*90
• CROSS COMPOUND=
SPHERICAL+CYLINDRICAL
• +1.00/-1.00*180
• -1.50/+2.00*90
• BY FOCAL LENS
• R +2.00/+0.50*90
• L +2.00/+.75*180
• ADD +2.00 DS
SPHERICAL (+) , (-)
CYLINDER (+) , (-)
EG :- +1.00 DS/+1..00*90
+1.00 DS/-1.00*180
TYPES OF BIFOCAL LENS
DISTANCE -1.00
+1.00
NEAR +2.00 +2.00
TYPES OF PROGRESSIVE
1. DIGITAL 2. SMART DIGITAL
DIST
ENTER
MEDIATE
NEAR
SHORT
SPACE
SHORT
SPACE
+1.75
+2.00
+2.75
+3.00
SHORT
SPACE
SHORT
SPACE
+2.00
+2.25
+2.50
+2.75
• FIBRE CR 39 1.49
• HARD COT (HC) :- NO COLOUR CHANGES
• GLASS 1.52
• UN COT (NC) :- COLOUR CHANGES
• TIN TABLE :- COLOUR CHANGES
• ARC ANTI REFLECTION COATING
• BLUE CUT COATING
• PHOTOCHROMATIC :- LIGHT CHANGES
• POLYCARBONATE 1.58 :- DON’T BROKEN EASILY
QUALITY OF LENS

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Types of opyhalmic_lens.pptx

  • 1. TYPES OF OPHTHALMIC LENS BY SUJIT KUMAR saraswati-eye-care.business.site
  • 2. (-) CONCAVE/(+) CONVEX • COMPOUND NO = SPHERICAL+CYLINDRICAL • +1.00/+1.00*180 • -1.50/-2.00*90 • CROSS COMPOUND= SPHERICAL+CYLINDRICAL • +1.00/-1.00*180 • -1.50/+2.00*90 • BY FOCAL LENS • R +2.00/+0.50*90 • L +2.00/+.75*180 • ADD +2.00 DS SPHERICAL (+) , (-) CYLINDER (+) , (-) EG :- +1.00 DS/+1..00*90 +1.00 DS/-1.00*180
  • 3. TYPES OF BIFOCAL LENS DISTANCE -1.00 +1.00 NEAR +2.00 +2.00
  • 4. TYPES OF PROGRESSIVE 1. DIGITAL 2. SMART DIGITAL DIST ENTER MEDIATE NEAR SHORT SPACE SHORT SPACE +1.75 +2.00 +2.75 +3.00 SHORT SPACE SHORT SPACE +2.00 +2.25 +2.50 +2.75
  • 5. • FIBRE CR 39 1.49 • HARD COT (HC) :- NO COLOUR CHANGES • GLASS 1.52 • UN COT (NC) :- COLOUR CHANGES • TIN TABLE :- COLOUR CHANGES • ARC ANTI REFLECTION COATING • BLUE CUT COATING • PHOTOCHROMATIC :- LIGHT CHANGES • POLYCARBONATE 1.58 :- DON’T BROKEN EASILY QUALITY OF LENS