ADVANCES IN LASER & EYE - PowerPoint PPT Presentation

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ADVANCES IN LASER & EYE

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  1. ADVANCES INLASER& EYE SURYA

  2. Dr. Ajay DudaniDr. Vinod Goyel SURYA ZEN EYE CENTREKhar, Mumbai SURYA EYETECHMulund, Mumbai ISO 9001 : 2000 Certified

  3. What is LASER ? SURYA L - Light A - Amplification by S - Stimulated E - Emission of R - Radiation

  4. What is LASER ? SURYA Substances have the property to “lase” i.e.absorb energy in one form & emit a new form of light energy which is more useful.

  5. Types of Lasers SURYA

  6. Tissue Interactions SURYA

  7. Modes of Operation SURYA Mode depends on • Laser material & • Mode of excitation of material Two modes- • Continuous wave operation • Conventional pulsed operation - Q switched - mode locked

  8. Delivery Systems SURYA • Transpupillary - Slit lamp - Laser Indirect Ophthalmoscopy • Trans scleral - Contact - Non contact • Endophotocoagulation

  9. SURYA

  10. Radiation Wavelengths SURYA • 193 nm - Excimer (Cornea) • 488 - 514 nm - Argon (Retina) • 694.3 nm - Ruby • 780 - 840 nm - Diode • 1064 nm - Nd Yag (Capsule) • 10,600 nm - Carbon dioxide (Skin)

  11. Uses SURYA Diagnostic Therapeutic

  12. Diagnostic Uses SURYA • Laser Fluorescence Spectroscopy • Scanning Laser Ophthalmoscopy • Laser Interferometry • Fundus Fluorescein Angiography Ffa PIC

  13. Therapeutic Uses SURYA Widely Used - • Extra-ocular adnexae • Anterior Segment • Posterior Segment

  14. Therapeutic Uses SURYA A. Extraocular Adnexae i. Removal of lid masses ii. Orbitotomies iii. Blepharoplasty, Aesthetics (smoothen wrinkles) iv. Capillary hemangioma, Portwine stain

  15. Therapeutic Uses SURYA B. Anterior Segment i. LASIK, PRK, PTK

  16. Therapeutic Uses SURYA What is LASIK ? • Suitable for 2 to 9 Dioptres of Ref. Error • OPD Procedure • 5 minutes per eye

  17. Therapeutic Uses SURYA LASIK Suction Ring Microkeratome Flap Removed

  18. Therapeutic Uses SURYA LASIK LASIK Flap Replaced Post - Op.

  19. Therapeutic Uses SURYA B. Anterior Segment ii. Conjunctival / Corneal Growths, Neovascularization iii. Cyclophotocoagulation

  20. Therapeutic Uses SURYA B. Anterior Segment

  21. Therapeutic Uses SURYA What is Glaucoma ?

  22. Therapeutic Uses SURYA B. Anterior Segment iv. Reopen failed filtering blebs v. Iridoplasty, Gonioplasty vi. Iris cyst, Pupilloplasty

  23. Therapeutic Uses B. Anterior Segment SURYA vii. Posterior Capsular Opacification

  24. Therapeutic Uses C. Posterior Segment SURYA

  25. Therapeutic Uses SURYA What is Diabetic Retinopathy ?

  26. Therapeutic Uses SURYA What is Diabetic Retinopathy ?

  27. Therapeutic Uses SURYA What is Diabetic Retinopathy ?

  28. Therapeutic Uses SURYA What is Diabetic Retinopathy ?

  29. Therapeutic Uses SURYA What is Diabetic Retinopathy ?

  30. Therapeutic Uses SURYA What is Diabetic Retinopathy ?

  31. Therapeutic Uses SURYA What is Diabetic Retinopathy ? • Severity of DR runs parallel to the duration of DM • 50 % of Diabetics have DR after 10 years of DM • 90 % of Diabetics have DR after 20 years of DM • A regular checkup every 6 - 12 months can detect early changes & prevent blindness

  32. Therapeutic Uses SURYA i. Diabetic Retinopathy

  33. Therapeutic Uses SURYA i. Diabetic Retinopathy Focal Grid Panretinal

  34. Therapeutic Uses SURYA ii. Retinal Haemorrhage

  35. Therapeutic Uses SURYA iii. Retinal Breaks or Tears

  36. Therapeutic Uses SURYA C. Posterior Segment iv. Subretinal neovascularisation v. Central serous retinopathy

  37. Therapeutic Uses C. Posterior Segment SURYA vi. Vitreolysis in cystoid macular edema

  38. Therapeutic Uses SURYA C. Posterior Segment vii. Vitreous traction bands, to free encapsulated foreign bodies

  39. Therapeutic Uses SURYA C. Posterior Segment viii. Drainage of subretinal fluid / haem.

  40. Therapeutic Uses C. Posterior Segment SURYA ix. Intraocular tumors (RB)

  41. Therapeutic Uses C. Posterior Segment SURYA ix. Intraocular tumors (Choroidal Melanoma)

  42. Therapeutic Uses SURYA C. Posterior Segment x. Laser scleral buckling

  43. Therapeutic Uses SURYA D. Miscellaneous Uses i. Neovascular stimulation ii. Aseptic phototherapy for pre-op preparation iii. Laser asepsis for diagnosed infectious corneal ulcers iv. Endonasal DCR

  44. SURYA What is the Latest ? PDT (Photo Dynamic Therapy) TTT (Transpupillary Thermo Therapy)

  45. SURYA What is ARMD ? Two types - Dry ARMD Wet ARMD

  46. SURYA What is ARMD ? Wet ARMD - Rare More devastating Drusen SRNVM

  47. SURYA What is ARMD ? Drusen

  48. SURYA What is ARMD ? SRNVM

  49. SURYA What is ARMD ? Vision in ARMD

  50. SURYA What is PDT ? Visudyne (Verteporfin) “Smart Bomb” for wet ARMD Selective Damage of SRNVM Costly