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DR. Khanna's LASIK Laser Surgery Resource - Los Angeles
A Brief History of Lasers
LASER: Light amplification by stimulated emission of Radiation
MASER: Microwave application by stimulated emission of radiation
ERASER: Used to rub pencil marks,not an acronym(gotcha)
EXCIMER: Excited Dimer
The idea to apply the excimer to the cornea was conceived by Sirinivasan in New York.
Classification of EXCIMER LASER
- Gas Excimer LASER
- Whole Beam
- Scanning Slit
- Flying Spot
- Variable Spot Scanning
- Solid State Excimer LASER
Generations of EXCIMER LASER: 1st, 2nd , 3rd, 4th
Refraction,Corneal Topography and Wavefront
Internal optical aberrations. May arise from the posterior surface of the cornea, the aqueous, the lens, the vitreous or the retina.
S.NO. |
PRK |
LASEK |
EPILASIK |
LASIK |
|
1 |
Ablation |
Surface |
Surface |
Deep |
|
2 |
Epithelium |
Removed |
Nonviable |
Intact |
|
3 |
Haze |
+ |
+ |
+/_ |
- |
4 |
Healing |
2-3 days |
2-3 days |
Immediate |
Immediate |
5 |
Pain |
Day 1 |
Day 1 |
Day3 |
None |
6 |
Recovery |
Slow |
Slow |
Fast |
Fast |
7 |
Safety |
Safe <100m Removal |
Safe <100m Removal |
Safe <100m Removal |
>250 Micron bed |
8 |
PreCone |
Possible |
Possible |
Possible |
No |
9 |
Instrument |
Brush |
Alcohol |
Epitome |
Microkeratome |
10 |
Thin Cornea |
+ |
+ |
+ |
>475 microns |
- In the Beginning…
- Lasik is finally Invented
- THE MECHANISM OF LASIK
- CUSTOMAIZATION OF THE LASIK FLAP
- CHECK LIST FOR LASIK
- What is safer LASIK?
- Why are we different?
- Preparation for laser surgery
- Lasik Activity Schedule
- A word about our sponsor
- Cheaper is not Always Better
- A Brief History of Lasers
- Dry eyes
- Special Situations in Lasik
- COMPLICATIONS
- Grading System for selecting a LASIK Surgeon
- The Quiz – What They Didn’t Teach You at Harvard
1220 La Venta Dr., Suite 209, Westlake Village, CA 91361
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Khanna Institute of LASIK – Santa Monica
808 Wilshire Blvd. Suite #140, Santa Monica, CA 90401
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Khanna Institute of LASIK – Valencia
23838 Valencia Blvd #100, Valencia, CA 91355
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Khanna Institute of LASIK – Corona
1820 Fullerton Ave. Suite #310, Corona, CA 92881
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Khanna Institute of LASIK – Costa Mesa
1503 South Coast Drive, Costa Mesa, CA 92626
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