Visual Acuity and Macular Sensitivity in Myopic Eyes before and after Laser in Situ Keratomileusis

2005 ◽  
Vol 15 (6) ◽  
pp. 695-701 ◽  
Author(s):  
M. Varano ◽  
C. Scassa ◽  
P. Ducoli ◽  
M. Terrana ◽  
F. Calabrò ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Laser In Situ Keratomileusis ◽  
Macular Sensitivity ◽  
Before And After

scholarly journals Accommodation Amplitude Before and After Laser In Situ Keratomiletus (LASIK) In Myopic Patients

2020 ◽  
Vol 3 (1) ◽  
pp. 1-18
Author(s):  
Bonita Asyigah ◽  
Ani Ismail
Keyword(s):  
Visual Acuity ◽  
Intraocular Pressure ◽  
Refractive Surgery ◽  
Laser In Situ Keratomileusis ◽  
Adaptation Mechanism ◽  
Near Vision ◽  
Before And After ◽  
Center Hospital

ABSTRACT Introductions: Laser in situ Keratomileusis (LASIK) is the most common refractive surgery to treat myopia. One of the most common complain after this procedure is blurry near- vision. Objectives: To evaluate the role of accommodation amplitude (AA) in myopic patients before and after LASIK and its effect to blurry near-vision in myopic patients after LASIK Methods: Patients with myopia who underwent LASIK procedure in Sriwijaya Eye Center Hospital from January to February 2018 studied prospectively. AA was assessed before and after LASIK with 1 day, 1 week and 1 month. Myopia degree, intraocular pressure (IOP), age, gender, ablation and corneal profile were also assessed. Results: A total 52 eyes from 32 patients were included. Visual acuity (VA) of all sample were significantly improve in 1 day after LASIK (p 0,001). Mean AA in myopic patients before LASIK 9,25 D and AA 1 day after LASIK were all significantly decrease into 9,00D (p 0,012) which can cause in blurry near- vision after LASIK. In 1 month followed-up, mean AA is significantly improved into 11,00 D (p 0,000) with no complain. Other factor that affect the changing AA were corneal cell density (CD), IOP and AA before LASIK. Conclusions: There is significant AA difference in myopic patients before and after LASIK. Blurry near-vision after LASIK is caused by AA adaptation mechanism after LASIK.

Laser in situ Keratomileusis Improves Visual Acuity in Some Adult Eyes With Amblyopia

2004 ◽  
Vol 20 (1) ◽  
pp. 25-28 ◽  
Author(s):  
Irina S Barequet ◽  
Tamara Wygnanski-Jaffe ◽  
Ami Hirsh
Keyword(s):  
Visual Acuity ◽  
Laser In Situ Keratomileusis

Bioptics for high hyperopia with combined multifocal intraocular lens implantation and excimer ablation in young patients

2018 ◽  
Vol 29 (4) ◽  
pp. 426-430 ◽  
Author(s):  
Omer Trivizki ◽  
David Smadja ◽  
Michael Mimouni ◽  
Samuel Levinger ◽  
Eliya Levinger
Keyword(s):  
Visual Acuity ◽  
Intraocular Lens ◽  
Laser In Situ Keratomileusis ◽  
Intraocular Lens Implantation ◽  
Multifocal Intraocular Lens ◽  
Distance Visual Acuity ◽  
Lens Implantation ◽  
Near Visual Acuity ◽  
High Hyperopia

Purpose:To analyze the visual and refractive outcome of the bioptics procedure combining multifocal intraocular lens implantation and excimer laser surgery in young patients with high hyperopic eyes not suitable for a single surgical procedure.Methods:This retrospective case series included 10 eyes of five patients (age range 18–30 years) with high hyperopia (spherical equivalent +8.51 ± 0.85 diopters (D)). They had been treated with serial multifocal intraocular lens implantation followed 6 weeks later by laser in situ keratomileusis for residual hyperopia. Uncorrected distance visual acuity, uncorrected near visual acuity, corrected distance visual acuity, corrected near visual acuity, and manifest refraction were evaluated before surgeries, after multifocal intraocular lens implantation, and 3 months post laser in situ keratomileusis.Results:No patients were lost to follow-up (6 months). The mean spherical equivalent decreased to +2.05 ± 1.33 D after multifocal intraocular lens implantation and to −0.10 ± 0.58 D after the laser in situ keratomileusis procedure. Success of the procedures was determined by uncorrected visual acuity. LogMAR uncorrected distance visual acuity improved by a total of more than six lines from 1.05 ± 0.18 LogMAR to 0.46 ± 0.12 LogMAR post multifocal intraocular lens implantation and to 0.15 ± 0.06 LogMAR after both surgeries. The LogMAR uncorrected near visual acuity increased by 0.81 ± 0.82 LogMAR after lens implantation due to loss of accommodation, and all eyes reached a LogMAR of 0 at 1 month postoperatively following laser in situ keratomileusis.Conclusions:A bioptics approach involving multifocal intraocular lens followed 6 weeks later by a laser in situ keratomileusis procedure for the correction of very high hyperopia enabled the resolution of the residual refractive error in young very high hyperopic patients.

Effect of laser in situ keratomileusis correction on contrast visual acuity

2001 ◽  
Vol 27 (3) ◽  
pp. 357-361 ◽  
Author(s):  
Kunihiko Nakamura ◽  
Hiroko Bissen-Miyajima ◽  
Ikuko Toda ◽  
Yoshiko Hori ◽  
Kazuo Tsubota
Keyword(s):  
Visual Acuity ◽  
Laser In Situ Keratomileusis

scholarly journals Comparison of Intraocular Pressure before and after Laser In Situ Keratomileusis Refractive Surgery Measured with Perkins Tonometry, Noncontact Tonometry, and Transpalpebral Tonometry

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Isabel Cacho ◽  
Juan Sanchez-Naves ◽  
Laura Batres ◽  
Jesús Pintor ◽  
Gonzalo Carracedo
Keyword(s):  
Intraocular Pressure ◽  
Refractive Surgery ◽  
Corneal Thickness ◽  
Laser In Situ Keratomileusis ◽  
Spherical Equivalent ◽  
Transpalpebral Tonometry ◽  
Spherical Equivalent Refraction ◽  
Before And After ◽  
Noncontact Tonometry

Purpose. To compare the intraocular pressure (IOP) before and after Laser In Situ Keratomileusis (LASIK), measured by Diaton, Perkins, and noncontact air pulse tonometers.Methods. Fifty-seven patients with a mean age of 34.88 were scheduled for myopia LASIK treatment. Spherical equivalent refraction (SER), corneal curvature (K), and central corneal thickness (CCT) and superior corneal thickness (SCT) were obtained before and after LASIK surgery. IOP values before and after surgery were measured using Diaton, Perkins, and noncontact air pulse tonometers.Results. The IOP values before and after LASIK surgery using Perkins tonometer and air tonometers were statistically significant (p<0.05). However, no significant differences were found (p>0.05) for IOP values measured with Diaton tonometer. CCT decreases significantly after surgery (p<0.05) but no statistical differences were found in SCT (p=0.08). Correlations between pre- and postsurgery were found for all tonometers used, withp=0.001andr=0.434for the air pulse tonometer,p=0.008andr=0.355for Perkins, andp<0.001andr=0.637for Diaton.Conclusion. Transpalpebral tonometry may be useful for measuring postsurgery IOP after myopic LASIK ablation because this technique is not influenced by the treatment.

Visual Acuity After Laser In Situ Keratomileusis to Correct High Astigmatism in Adults with Meridional Amblyopia

2011 ◽  
Vol 152 (6) ◽  
pp. 964-968.e1 ◽  
Author(s):  
Carolina Arruabarrena ◽  
Miguel A. Teus ◽  
José Luis Hernández-Verdejo ◽  
Rafael Cañones
Keyword(s):  
Visual Acuity ◽  
Laser In Situ Keratomileusis

The Effect of Astigmatism Axis on Visual Acuity

2016 ◽  
Vol 27 (3) ◽  
pp. 308-311 ◽  
Author(s):  
Michael Mimouni ◽  
Achia Nemet ◽  
Russell Pokroy ◽  
Tzahi Sela ◽  
Gur Munzer ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Refractive Surgery ◽  
Laser In Situ Keratomileusis ◽  
Stepwise Multiple Regression ◽  
Spherical Equivalent ◽  
Tel Aviv ◽  
Uncorrected Distance Visual Acuity ◽  
Laser Refractive Surgery ◽  
Better Than

Purpose To evaluate the effect of astigmatism axis on uncorrected distance visual acuity (UDVA) in emmetropic eyes that underwent laser refractive surgery. Methods This retrospective study included patients who underwent laser in situ keratomileusis or photorefractive keratectomy between January 2000 and December 2015 at the Care-Vision Laser Centers, Tel Aviv, Israel. Eyes with a 3-month postoperative spherical equivalent between -0.5 D and 0.5 D were included in this study. Eyes with ocular comorbidities and planned ametropia were excluded. Study eyes were divided into 3 groups according to the steep astigmatic axis: with the rule (WTR) (60-120), oblique (31-59 or 121-149), and against the rule (ATR) (0-30 or 150-180). The UDVA of these 3 groups was compared. The oblique group was divided into oblique ATR and oblique WTR, which were compared with each other. Results A total of 17,416 consecutive eyes of 8,708 patients were studied. The WTR eyes (n = 10,651) had significantly better UDVA (logMAR 0.01 ± 0.08) than the oblique (n = 3,141, logMAR 0.02 ± 0.09) and ATR eyes (n = 3,624, logMAR 0.02 ± 0.10) (p<0.001). The oblique WTR group had significantly better UDVA than the oblique ATR group (p<0.001). The UDVA of the oblique and ATR groups was similar. Stepwise multiple regression analysis showed that the group accounted for 15% of the UDVA variance (p = 0.04). Conclusions The astigmatic axis has a small but significant effect on UDVA in emmetropic eyes; WTR was better than oblique and ATR astigmatism. Therefore, when correcting astigmatism, it may be preferable to err towards WTR astigmatism.

scholarly journals Corneal Aberrations and Visual Acuity After Laser In Situ Keratomileusis: Femtosecond Laser Versus Mechanical Microkeratome

2010 ◽  
Vol 149 (5) ◽  
pp. 785-793 ◽  
Author(s):  
Ramón Calvo ◽  
Jay W. McLaren ◽  
David O. Hodge ◽  
William M. Bourne ◽  
Sanjay V. Patel
Keyword(s):  
Visual Acuity ◽  
Femtosecond Laser ◽  
Laser In Situ Keratomileusis ◽  
Corneal Aberrations
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