Effect of Lowering Laser Energy on the Surface Roughness of Human Corneal Lenticules in SMILE
CONCLUSIONS:</span><p>Lowering laser energy levels can improve surface quality of the lenticule of SMILE. To achieve better visual outcomes with faster recovery after the procedure, it is recommended to reduce the laser energy to less than 115 nJ at a spot separation of 4.5<i> μ</i>m.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):617 –624.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Toric ICL Implantation After Sequential Intracorneal Ring Segments Implantation and Corneal Cross-linking in Keratoconus: 2-Year Follow-up
CONCLUSIONS:</span><p>Implantation of Visian toric ICL following sequential ICRS insertion and CXL is an effective and safe option for correcting high residual refractive error and improving visual acuity in patients with moderate to severe keratoconus in the long term.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):610 –616.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Refractive Outcomes of 20 Eyes Undergoing ICL Implantation for Correction of Hyperopic Astigmatism
CONCLUSIONS:</span><p>ICL hyperopic toric implantation is a safe method and provides stable refractive outcomes in patients with high hyperopia (up to 10.00 D) and astigmatism (up to 6.00 D).</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):604 –609.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
A Technique to Reduce Incidence of Opaque Bubble Layer Formation During LASIK Flap Creation Using the VisuMax Femtosecond Laser
CONCLUSIONS:</span><p>Less astigmatic, thicker, denser, and smaller corneas increased the risk of OBL using the original technique for flap creation. The cone modification technique was associated with lower risk of OBL formation, even in eyes with significant risk factors for OBL using the original technique.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):584 –590.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Comparison of Corneal Dynamic and Tomographic Analysis in Normal, Forme Fruste Keratoconic, and Keratoconic Eyes
CONCLUSIONS:</span><p>The current study showed the feasibility of use of non-tomographical parameters obtained from the Corvis ST for differentiating normal eyes and those with forme fruste keratoconus and keratoconus. The diagnostic ability of the Corvis ST was comparable to that of the Pentacam for differentiating normal eyes and eyes with forme fruste keratoconus.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):632 –638.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Comparison of Corneal Deformation Parameters in Keratoconic and Normal Eyes Using a Non-contact Tonometer With a Dynamic Ultra-High-Speed Scheimpflug Camera
CONCLUSIONS:</span><p>Combining multiple biomechanical parameters (A1 velocity, DA, DA Ratio Max 1mm, Max Inverse Radius, and SP-A1) into a logistic regression equation allows for high sensitivity and specificity for distinguishing keratoconic from normal eyes.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):625 –631.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Femtosecond Laser –Assisted Intraocular Lens Fragmentation: Low Energy Transection
CONCLUSIONS:</span><p>This case illustrates a novel and effective clinical application of the femtosecond laser.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):646 –648.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Topography-Guided Photorefractive Keratectomy in the Treatment of Corneal Scarring
CONCLUSIONS:</span><p>The use of TG-PRK for corneal scarring may improve visual acuity in selected cases, obviate the need for keratoplasty in some cases, and facilitate toric IOL implantation in some cases.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):639 –644.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Ciliary Muscle Electrostimulation to Restore Accommodation in Patients With Early Presbyopia: Preliminary Results
CONCLUSIONS:</span><p>Ciliary muscle contraction to restore accommodation was safe and improved the short-term accommodative ability of patients with early emmetropic presbyopia.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):578 –583.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
A Multicenter Retrospective Survey of Refractive Surgery in 78,248 Eyes
CONCLUSIONS:</span><p>According to this survey, LASIK remains the most prevalent surgical technique in Japan. Both LASIK and phakic IOL implantation offered good safety and efficacy outcomes, yielding predictable and stable results.</p><p><b>[<i>J Refract Surg.</i> 2017;33(9):598 –602.]</b></p></div> (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 8, 2017 Category: Opthalmology Source Type: research
Predicting Refractive Surgery Outcome: Machine Learning Approach With Big Data
Corneal surgical correction of refractive errors is a widely performed procedure, with more than 200 million surgeries performed worldwide.1 Advances in technology such as corneal reshaping laser systems and eye tracking software have led to unprecedented successful results and a high degree of patient satisfaction.2 However, in some cases, undesired outcomes may lead to additional interventions.3 Identifying patients in whom achieving good surgical outcomes is less likely may be beneficial for both the patient and the surgeon. Indeed, several clinical factors affecting surgical outcome have (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 7, 2017 Category: Opthalmology Authors: Asaf Achiron, MD Source Type: research
Effect of Lowering Laser Energy on the Surface Roughness of Human Corneal Lenticules in SMILE
Small incision lenticule extraction (SMILE) is the latest refractive surgical technique using only a femtosecond laser, which removes the corneal stromal lenticule through a small corneal incision ranging from 2 to 5 mm.1,2 This procedure could be achieved by using a femtosecond laser platform with higher firing frequency. Recently, the 500-kHz VisuMax (Carl Zeiss Meditec AG, Jena, Germany) platform with a pulse energy of 115 to 170 nJ has been used.1,3,4 Several studies have reported comparable or superior efficacy, predictability, and safety to other refractive surgery techniques, including (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 7, 2017 Category: Opthalmology Authors: Yong Woo Ji, MD Source Type: research
Toric ICL Implantation After Sequential Intracorneal Ring Segments Implantation and Corneal Cross-linking in Keratoconus: 2-Year Follow-up
Keratoconus is a non-inflammatory and progressive corneal disorder characterized by corneal protrusion and thinning that leads to myopia and irregular astigmatism and hence to an impairment of visual function.1,2 Corneal collagen cross-linking (CXL) is the only available treatment capable of stopping the progression of keratoconus that does not have a significant effect on visual acuity.3 To improve vision after undergoing CXL, additional interventions can be proposed to patients who are intolerant to hard contact lenses (defined as a comfortable wearing time of less than 8 hours per day) or (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 7, 2017 Category: Opthalmology Authors: Youssef Abdelmassih, MD Source Type: research
A Technique to Reduce Incidence of Opaque Bubble Layer Formation During LASIK Flap Creation Using the VisuMax Femtosecond Laser
Femtosecond laser flap creation is the most commonly used method for LASIK flap creation.1 Both surgeons and patients recognize the increased accuracy and safety of these instruments over mechanical microkeratomes. Flap thickness is more accurate using the femtosecond laser compared to mechanical microkeratomes.2 Unwanted side effects can occur with the use of the femtosecond laser, which include transient light sensitivity syndrome,3 increased corneal forward light scatter and backscatter,4,5 and opaque bubble layer (OBL).6 OBL is a temporary whitening of the cornea resulting from (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 7, 2017 Category: Opthalmology Authors: Ningling Wu, MD, PhD Source Type: research
Comparison of Corneal Dynamic and Tomographic Analysis in Normal, Forme Fruste Keratoconic, and Keratoconic Eyes
Keratoconus is a bilateral corneal condition characterized by progressive corneal thinning and irregular astigmatism.1 The diagnosis of keratoconus is made by a combination of clinical history and typical corneal tomographic findings.2 Scheimpflug imaging is one of the most commonly used investigative modalities in clinical practice for screening of cases with abnormal tomography before corneal refractive surgery. The Pentacam (Oculus Optikger äte, Wetzlar, Germany) comprises a rotating Scheimpflug camera featuring anterior corneal curvature–based topometric indices and posterior corneal and (Source: Journal of Refractive Surgery)
Source: Journal of Refractive Surgery - September 7, 2017 Category: Opthalmology Authors: Yu Meng Wang, MMed Source Type: research
