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Refractive Corneal SurgeryAka: Refractive Surgery, Laser Thermal Keratoplasty, Intrastromal corneal ring, Intacs, Phakic Intraocular Lens
- See Also
- Refractive Error
- Indications
- Refractive Error Correction
- Background: Refractive Surgery reshapes Cornea
- Myopia (Near-sightedness)
- Light rays focus in front of Cornea
- Surgery flattens Cornea to focus light further back
- Hyperopia (Far-sightedness)
- Light rays focus behind Cornea
- Surgery steepens Cornea to focus light closer
- Astigmatism
- Cornea is non-spherical with uneven surface
- Surgery evens out Cornea, directs light at retina
- Techniques
- Laser In-Situ Keratomileusis (LASIK)
- Photorefractive Keratectomy (PRK)
- Replaced by LASIK
- Radial Keratotomy (RK)
- Replaced by LASIK
- Laser Thermal Keratoplasty (LTK)
- YAG laser mediated radial spot placement
- Heats Cornea and shrinks stromal collagen
- Modifies anterior Corneal curvature
- Corrects presbyopic patient with <4 D Refraction
- Intrastromal Corneal ring (ICR or Intacs)
- Polymethylmethacrylate (PMMA) ring implanted
- Flattens central Cornea
- Corrects low Myopia (<3 D)
- Surgery easily adjustable
- No risk of central Corneal scarring
- Phakic Intraocular Lens
- Plastic intraocular lens
- Placed anterior to natural crystalline lens
- Corrects high Myopia and Hyperopia
- References
- Bower (2001) Am Fam Physician 64(7):1183
- Sanders (1998) J {a 6313} Refract Surg 24:607
- Schanzlin (1997) Ophthalmology 104:1067
- (1999) Med Lett Drugs Ther 41(1068):121
Surgical ocular refractive procedure (C1274010)
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| Definition (MSH) | Surgical procedures employed to correct REFRACTIVE ERRORS such as MYOPIA; HYPEROPIA; or ASTIGMATISM. These may involve altering the curvature of the CORNEA; removal or replacement of the CRYSTALLINE LENS; or modification of the SCLERA to change the axial length of the eye. |
| Concepts | Therapeutic or Preventive Procedure (T061)
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| English | Refractive Surgeries, Refractive Surgery, Refractive Surgical Procedure, Refractive Surgical Procedures, Surgical ocular refraction procedure, Surgical ocular refractive procedure |
| Spanish | cirugÃa refractaria, cirugÃa refractiva, cirugia refractaria, cirugia refractiva, procedimiento de refracción ocular quirúrgica, procedimiento de refraccion ocular quirurgica |
| Credits | Derived from the NIH UMLS (Unified Medical Language System)
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