2010, Number 1
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Rev Mex Oftalmol 2010; 84 (1)
Queratoplastía conductiva (CK) para presbicia, experiencia en México
Solorio-Smith R, Villanueva G
Language: Spanish
References: 35
Page: 34-38
PDF size: 79.46 Kb.
ABSTRACT
Purpose: To assess the safety and efficacy of conductive keratoplasty (CK) in the treatment of presbyopia.
Methods: Twenty three presbyopic patients underwent unilateral CK in the non-dominant eye to improve their near vision. They were emetropic or had low to mild hyperopia. Mean age was 51.17 years (range: 40 to 61 years). The surgeries were performed by the same surgeon. The refractive change target for these eyes was -1.75 diopters.
Results: Preoperative mean manifest refraction spherical equivalent (MRSE) was +0.96 D (range:-0.50 to +2.00 D), six months after CK, the mean near UCVA was J2 (range: J1 to J5), with 3 cases (12.5%) with J1, 15 cases (62.5%) with J2 or better and 21 (95.8 %) with J3 or better, 2 cases (8.6%) con J5. The mean MRSE correction was -2.12 D (range: -1.75 to -2.50 D). Eighteen patients (78.2%) had binocular distance UCVA of 20/20, 21 cases (91.3%) had binocular UCVA of 20/25 or better and 23 cases (100%) had binocular UCVA of 20/30 or better. We had 1 case of under correction and 1 case of regression.
Conclusions: Conductive keratoplasty for the treatment of presbyopia provided safe and effective results 6 months following the initial surgery. Longer follow-up will be needed to describe refractive stability.
REFERENCES
Gasset AR, Kaufman HE. Thermokeratoplasty in the treatment of keratoconus. Am J Ophthalmol 1975; 79:226-232.
Newmann AC, Fyodorov S, Sander DR. Radial thermokeratoplasty for the correction ofhyperopia. Refract Corneal Surg 1990; 6:404-412.
Thompson VM, Seiler T, Durrie DS, Cavanaugh TB. Holmium YAG laser thermokeratoplastyf or hyperopia and astigmatism: an overview. Refract Corneal Surg 1993; 9:236.
Brinkmann R, Koop N, Geerling G y cols. Diode laser thermokeratoplasty: application strategy and dosimetry. J Cataract Refract Surg 1998; 24:1195-1207.
Feldman ST, Ellis W, Frucht-Pery J y cols. Regression of effect following radial thermokeratoplasty in humans. Refract Corneal Surg 1989; 5:288-291.
Durrie DS, Schumer DJ, Cavanaugh TB. Holmium YAG laser thermokeratoplasty for hyperopia. J Refract Corneal Surg 1994; 10(supl 2):S277-280.
Moreira H, Campos M, Sawusch MR y cols. Holmium laser thermokeratoplasty. Ophthalmology 1993; 100:752-761.
Seiler T, Matallana M, Bende T. Laser thermokeratoplasty by means of a pulsed holmium: YAG laser for hyperopic correction. Refract Corneal Surg 1991; 6:335-339.
Beckman H, Fuller TA, Boyman R y cols. Carbon dioxide laser surgery of the eye and adnexa. Ophthalmology 1980; 87:990-1000.
Peyman GA, Larson B, Raichand M, Andrews AH. Modification of rabbit corneal curvature with use of carbon dioxide laser burns. Ophthalmic Surg 1980; 11:325-329.
Neuman AC, Sanders DR, Salz JJ. Radial thermokeratoplasty for hyperopia. Encouraging results from early laboratory and human trials. Refract Corneal Surg 1989; 5:52-54.
Ismail MM, Alio JL, Perez-Santonja JJ. Noncontact thermokeratoplasty to correct hyperopia induced by laser in situ keratomileusis. J Cataract Refract Surg 1998; 24:1191-1194.
Goggin M, Lavery F. Holmium laser thermokeratoplasty for the reversal of Hyperopia after myopic photorefractive keratectomy. Br J Ophthalmol 1997; 81:541-543.
Gezer A. The role of patient’s age in regression of holmium: YAG Thermokeratoplasty induced correction of hyperopia. Eur J Ophthalmol 1997; 7:139-143.
Tutton MK, Cherry PM. Holmium: YAG laser thermokeratoplasty to correct hyperopia: two years follow-up. Ophthalmic Surg Lasers 1996; 27(supl 5):S521-524.
Hennekes R. Holmium: YAG laser thermokeratoplasty for correction of astigmatism. J Refract Surg 1995; 11(supl 3):S358- 360.
Chandonnet A, Bazin R, Sirois C, Belanger PA. CO2 laser annular thermokeratoplasty: a preliminary study. Lasers Surg Med 1992; 12:264-273.
Brinkmann R, Radt B, Flamm C y cols. Influence of temperature and time on thermally induced forces in corneal collagen and the effect on laser thermokeratoplasty. J Cataract Refract Surg 2000; 26:744-754.
Sporl E, Genth U, Schmalfuss K, Seiler T. Thermomechanical behavior of the cornea. Ger J Ophthalmol 1996; 5(6):322-327.
Allain J, LeLons M, Ohen-Solal L y cols. Isometric tensions developed during the hydrothermic swelling of rat skin. Connect Tissue Res 1980; 7:127-133.
Neuman AC, Sanders DR, Salz JJ y cols. Effect of thermokeratoplasty on corneal curvature. J Cataract Refract Surg 1989; 16(6):727-731.
Keates RH, Dingle J. Thermokeratoplasty for keratoconus. Ophthalmic Surg 1975; 6 (3):89-92.
Aquavella JV, Smith RS, Shaw EL. Alterations in corneal morphology following thermokeratoplasty. Arch Ophthalmol 1976; 94:2082-2085.
Feldman ST, Ellis W, Frucht-Pery J y cols. Experimental radial thermokeratoplasty in rabbits. Arch Ophthalmol 1990; 108:997-1000.
Mendez A, Mendez Noble A. Conductive keratoplasty for the correction of hyperopia. In: Sher NA, ed. Surgery for Hyperopia and Presbyopia. Philadelphia, PA: Williams and Wilkins; 1997:163-171.
Asbell PA, Maloney R, Davidorf J y cols. Stability of hyperopic correction with conductive keratoplasty (CK). Invest Ophthalmol Vis Sci 2001; 42(4 Supl):S900.
McDonald MB, Davidorf J, Maloney RK, Manche EE,Hersch P. Conductive keratoplasty for the correction of low to mode rate hyperopia: 1-year results of the first 54 eyes. Ophthalmology 2002; 109:637-649.
Pallikaris IG, Naoumidi TL, Astyrakakis NI. Conductive keratoplasty to correct hyperopic astigmatism. J Refract Surg 2003; 19:425-432.
United States FDA PMA P010018: Refractec ViewPoint CK System. Physician’s Reference Guide for Treatment of Presbyopic Emmetropes and Hyperopes to Improve Near Vision Utilizing. Conductive Keratoplasty (CK). Irvine, Calif: Refractec Inc; 2004.
McDonald MB, Durrie D, Asbell P, Maloney R, Nichamin L. Treatment of presbyopia with conductive keratoplasty: six month results of the 1-year United States FDA clinical trial. Cornea. 2004; 23:661-668.
Panescu D. Conductive keratoplasty. IEEE Eng Med Biol Mag 2004; 23(4):16-18.
Alio J, Claramonte P, Ramsey R. Conductive keratoplasty in the correction of residual hyperopia following LASIK. J Refract Surg 2005; 21:698-704.
Alio JL, Claramonte PJ, Caliz A, Ramzy MI.Corneal modeling of keratoconus by conductive keratoplasty J Cataract Refract Surg 2005; 31:190-197.
Pallikaris IG, Naoumidi TL, Astyrakakis NI. Long-term results of conductive keratoplasty for low to moderate hyperopia. J Cataract Refract Surg 2005; 31(8):1520-1529.
Stahl JE. Conductive keratoplasty for presbyopia: 3-year results. J Refract Surg 2007; 23(9):905-910.