1
Associate Professor, Department of Ophthalmology, Feyz Hospital, Isfahan University of Medical Sciences, Isfahan, Iran.
2
Ophthalmologist, Isfahan University of Medical Sciences, Isfahan, Iran.
3
General Practitioner, Isfahan University of Medical Sciences, Isfahan, Iran.
Abstract
Background: This study aimed to evaluate the difference between the effect of standard photorefractive keratectomy (PRK) and Q-value adjusted ablation PRK with Allegretto Eye-Q on the ocular refraction.Methods: In this clinical trial study performed in Parsian clinic of Isfahan, 75 candidates for photorefractive surgery were included. All of these patients underwent standard PRK in one eye and Q-value adjusted ablation PRK in the other eye. The efficacy of therapy was measured by visual acuity, contrast sensitivity, subjective refraction and patients’ satisfaction, 3 months after the surgery.Finding: The mean score of postoperative visual acuity in standard PRK group and Q-value adjusted group was 10.48 ± 1.38 and 10.51 ± 1.22 respectively without correction. The mean postoperative refraction of standard PRK and Q-value adjusted PRK was 0 ± 0.37 and 0.05 ± 0.3 respectively. There was no significant statistical difference in visual acuity, refraction, contrast sensitivity and postoperative satisfaction between the two groups.Conclusion: There is no significant difference between efficacy of standard PRK and Q-value adjusted PRK in optimizing visual acuity, subjective refraction, contrast sensitivity and patient satisfaction.
Atebara NH, Editor. 2007-2008 Basic and Clinical Science Course Section 13: Refractive Surgery. San Francisco, LA: American Academy of Ophthalmology; 2007.
Bricola G, Scotto R, Mete M, Cerruti S, Traverso CE. A 14-year follow-up of photorefractive keratectomy. J Refract Surg 2009; 25(6): 545-52.
Schallhorn SC, Blanton CL, Kaupp SE, Sutphin J, Gordon M, Goforth H Jr, et al. Preliminary results of photorefractive keratectomy in active-duty United States Navy personnel. Ophthalmology 1996; 103(1): 5-22.
Niesen UM, Businger U, Schipper I. Disability glare after excimer laser photorefractive keratectomy for myopi. J Refract Surg 1996; 12(2): S267-8.
Vinciguerra P, Camesasca FI, Bains HS, Trazza S, Albè E. Photorefractive keratectomy for pri-mary myopia using NIDEK topography-guided customized aspheric transition zone. J Refract Surg 2009; 25(1 Suppl): S89-92.
Mastropasqua L, Toto L, Zuppardi E, Nubile M, Carpineto P, Di Nicola M, et al. Photorefractive keratectomy with aspheric profile of ablation versus conventional photorefractive keratectomy for myopia correction: six-month controlled clinical trial. J Cataract Refract Surg 2006; 32(1): 109-16.
Ghoreishi SM, Naderibeni A, Peyman A, Ris-manchian A, Eslami F. Aspheric profile versus wavefront-guided ablation photorefractive keratectomy for the correction of myopia using the Allegretto Eye Q. Eur J Ophthalmol. 2009; 19(4): 544-53.
Stojanovic A, Wang L, Jankov MR, Nitter TA, Wang Q. Wavefront optimized versus custom-Q treatments in surface ablation for myopic astigmatism with the WaveLight ALLEGRETTO laser. J Refract Surg 2008; 24(8): 779-89.
Koller T, Iseli HP, Hafezi F, Mrochen M, Seiler T. Q-factor customized ablation profile for the correction of myopic astigmatism. J Cataract Refract Surg 2006; 32(4): 584-9.
Nasrollahi,K. , Attarzadeh,H. , Masjedi,A. , Jenab,K. and Kavosh,M. (2010). Standard PRK Versus Q-value Adjusted Ablation PRK in Refractive Errors. Journal of Isfahan Medical School, 28(115), 909-914.
MLA
Nasrollahi,K. , , Attarzadeh,H. , , Masjedi,A. , , Jenab,K. , and Kavosh,M. . "Standard PRK Versus Q-value Adjusted Ablation PRK in Refractive Errors", Journal of Isfahan Medical School, 28, 115, 2010, 909-914.
HARVARD
Nasrollahi K., Attarzadeh H., Masjedi A., Jenab K., Kavosh M. (2010). 'Standard PRK Versus Q-value Adjusted Ablation PRK in Refractive Errors', Journal of Isfahan Medical School, 28(115), pp. 909-914.
CHICAGO
K. Nasrollahi, H. Attarzadeh, A. Masjedi, K. Jenab and M. Kavosh, "Standard PRK Versus Q-value Adjusted Ablation PRK in Refractive Errors," Journal of Isfahan Medical School, 28 115 (2010): 909-914,
VANCOUVER
Nasrollahi K., Attarzadeh H., Masjedi A., Jenab K., Kavosh M. Standard PRK Versus Q-value Adjusted Ablation PRK in Refractive Errors. JIMS, 2010; 28(115): 909-914.