medigraphic.com
Anales de la Sociedad Mexicana de Oftalmología y Archivos de la Asociación Para Evitar la Ceguera en México

2006, Number 6

<< Back Next >>

Rev Mex Oftalmol 2006; 80 (6)

Resultados refractivos en pacientes operados de catarata con antecedente de cirugía refractiva corneal

Urrutia BIP, Matiz MH, Morales GME, Chávez ME, Islas de la VG, Garzón M

Language: Spanish
References: 7
Page: 312-317
PDF size: 555.34 Kb.


ABSTRACT

Purpose: To analyze the refractive errors in cataract surgery after previous corneal refractive surgery.
Methods: Retrospective study of patients operated with phacoemulsification after having had corneal refractive surgery as radial keratotomy (RK) or laser in situ keratomileusis (LASIK). SRK II and SRK/T formulas were used to calculate the IOL and the keratometric values were obtained by topography. Finally the refractive errors were analyzed.
Results: 18 eyes of 13 patients were evaluated. 15 eyes (11 patients) post RK, and 3 eyes (2 patients) post LASIK. In the post RK group 2 eyes had a final refraction of emmetropia (13.3%); 3 eyes myopia (20%) –2.79D ± 0.593, and 10 eyes hyperopia (66.6%) +1.789 D ± 1.06. In the group of post LASIK the patients had a hyperopic refraction in 100% of cases (3 eyes) +3.03 D ± 0.83.
Conclusions: The use of SRK II formula and keratometric values by topography causes serious errors in IOL power calculation after refractive surgery. We concluded that the overestimation of corneal power by the topography was probably the main factor.


REFERENCES

  1. Hoffer K. Calculating intraocular lens power after refractive corneal surgery. Arch Ophthalmol 2002; 120:500-1.

  2. Odenthal M, Eggink C, Melles G y col. Clinical and theoretical results of intraocular lens power calculation for cataract surgery after photorefractive keratectomy for myopia. Arch Ophthalmol 2002; 120:431-438.

  3. Kim J, Lee D, Joo Ch. Measuring corneal power for intraocular lens power calculation after refractive surgery. J Cataract Refract Surg 2002; 28:1932-1938.

  4. Stakheev A, Blalashevich L. Corneal power determination after previous corneal refractive surgery for intraocular lens calculation. Cornea 2003; 22(3) 214-220.

  5. Argento C, Cosentino MJ, Badoza D. Intraocular lens power calculation after refractive surgery. J Cataract Refract Surg 2003; 29:1346-1351.

  6. Aramberri J. Intraocular lens power calculation after corneal refractive surgery: Double-K method. J Cataract Refract Surg 2003; 29:2063-2068.

  7. Koch D. Calculating IOL power in eyes that have had refractive surgery. J Cataract Refract Surg 2003; 29:2039-2042.




2020     |     www.medigraphic.com