Objective To study the influence of high intraocular pressure (IOP) on visual quality after excimer laser corneal refractive surgery. Methods This was a prospective, observational study. The experimental group included 68 eyes of 41 patients with high IOP after corneal excimer laser refractive surgery, and the normal group included 68 eyes of 41 patients with normal IOP. Measurements included visual acuity, corrected spherical lens, corrected cylindrical lens, corneal aberrations (C7, C8, C12), corneal thickness, corneal anterior surface curvature and corneal posterior surface elevation, contrast sensitivity and a record of subjective feelings at 1 week and 2 weeks after surgery. The differences between the groups were evaluated with a independent t test and a paired t test. Reports of subjective feelings were analyzed with a chi-square test, and a Wilcoxon test was used to analyze the abnormal distribution data. Results One week after surgery, visual acuity (t=-2.43, P<0.05), corrected spherical lens (t=-2.96, P<0.05), and contrast sensitivity (12 c/d) (t=-0.33, P<0.05) in the experimental group were lower than in the normal group, but C7 (t=-0.19, P<0.05) and C12 (t=5.08, P<0.05) were higher. The differences were statistically significant. In the experimental group, visual acuity (t=-3.66, P<0.05), corrected spherical lens (t=-4.38, P<0.05), and contrast sensitivity (12 c/d) (t=-0.32, P<0.05) were lower 1 week after surgery than at 2 weeks after surgery, but C7 (t=-0.17, P<0.05) and C12 (t=5.33, P<0.05) were higher. The differences were statistically significant. Conclusion After excimer laser corneal refractive surgery, high intraocular pressure can lead to curvature of the corneal anterior surface, aberrations and refractive changes, and lead to a decline in visual quality.
陈开建,刘李娜,白继,张国伟,陶露莎. 准分子激光角膜屈光手术后眼压升高对视觉质量的影响[J]. 中华眼视光学与视觉科学杂志, 2014, 16(1): 15-19.
Chen Kaijian,Liu Lina,Bai Ji,Zhang Guowei,Tao Lusha.. The influence of high intraocular pressure on quality of vision after excimer laser corneal refractive surgery. Chinese Journal of Optometry Ophthalmology and Visual Science, 2014, 16(1): 15-19. DOI: 10.3760/cma.j.issn.1674-845X.2014.01.004
Chayet AS, Assil KK, Montes M, et al. Regression and itsmechan ism after laser in situ keratomileusis inmoderate and highmyopia[J]. Ophthalmology,1998,105:1194-1199.
[2]
Kermani O, Schmiedt K, Oberheide U, et al. Topographic and wavefront-guided customized ablations with the NIDEK-EC5000CXII in LASIK for myopia[J]. J Refract Surg,2006,22: 754-763.
[3]
Jaycock PD, Lopo L, Ibrahim J, et al. Interferometirc techniques to measure biomechanical changes in the cornea induced by refractive surgery[J]. J Cataract Refract Surg,2005, 31:175-184.
[4]
Kamiya K, Aizawa D, Igarashi A, et al. Effects of antiglaucoma drugs on refractive outcomes in eyes with myopic regression after laser in situ keratomileusis[J]. Am J Ophthalmol,2008, 145:233-238.
Mitchell P, Hourihan F, Sandbach J, et al. The relationship between glaucoma and myopia: the blue mountains eye study[J]. Ophthalmology,1999,106:2010-2015.
[7]
Zhou C, Chai X, Yuan L, et al. Corneal high-order aberrations after customized aspheric ablation and conventional ablation for myopic correction[J]. Curr Eye Res,2007,32:431-438.
[8]
Oshika T, Klyce SD, App legate RA, et al. Comparision of corneal wavefront aberrations after photorefractive keratectomy and laser in situ keratomileusis[J]. Am J Ophthalmol,1999, 127:1-7.
[9]
Oshika T, Miyata K, Tokunaga T, et al. Higher-order wavefront aberrations of cornea and magnitude of refractive correction in laser in situ keratomileusis[J]. Ophthalmology,2002,109:1154-1158.
Morchen M, Kaemmerer M, Mierdel P, et al. Increased higher-order optical aberration after laser refractive surgery: a problem of subclinical decentration[J]. J Cataract Refract Surg,2001,27:362-369.
[12]
Mihashi T. Higher-order wavefront aberrations induced by small ablation area and sub-clinical decentration in simulated corneal refractive surgery using a perturbed schematic eye models[J]. Sem in Ophthalmol,2003,18: 41-47.
[13]
Schwiegerling J, Snyder RW. Corneal ablation patterns to correct for spherical aberration in photorefractive keratectomy[J]. J Cataract Refract Surg,2000,26:214-221.
Qi H, Hao Y, Xia Y, et al. Regression-related factors before and after laser in situ keratomileusis[J]. Ophthalmologica,2006, 220:272-276.
[17]
Hu L,Wang Q, Yu P, et al. The influence of intraocular pressure on wavefront aberrations in patients undergoing laser-assisted in situ keratomileusis[J]. Invest Ophthalmol Vis Sci,2013,54:5527-5534.
[18]
Pinsky PM, Datye DV. Numerical modeling of radial, astigmatic and hexagonal keratotomy[J]. J Refract Corneal Surg,1992,8:164-172.