Purpose: To determine the refractive outcomes of wavefront-optimized laser in situ keratomileusis (LASIK) treatments, in particular to measure corneal densitometry after LASIK using the densitometry function of the Pentacam Scheimpflug system.
Setting: Division of Ophthalmology and Visual Sciences, University of Nottingham, United Kingdom.
Design: Cohort study.
Methods: Changes in postoperative visual acuity, refraction, and contrast sensitivity were evaluated after wavefront-optimized laser treatment. Corneal densitometry was evaluated with the Scheimpflug system before and after LASIK.
Results: One year postoperatively, the uncorrected distance visual acuity was 6/6 or better in 92% of eyes and 6/9 or better in all eyes. Eighty-six percent of eyes had no change in the corrected distance visual acuity (CDVA); 4% gained 1 or more lines. Wavefront-optimized LASIK was stable over 1 year postoperatively. Eighty-nine percent of eyes were within ±0.50 diopter (D) and 100% were within ±1.00 D of the intended correction 1 year postoperatively. Contrast sensitivity showed a nonsignificant improvement (1.55 ± 0.10 [SD] preoperatively to 1.57 ± 0.09 12 months postoperatively) (P > .05). There was a nonsignificant increase in corneal densitometry 1 year postoperatively (from 12.72 ± 2.43 to 13.04 ± 2.58) (P > .05). No correlation was found between corneal densitometry and contrast sensitivity or CDVA.
Conclusions: Wavefront-optimized LASIK gave excellent refractive and visual outcomes and did not seem to affect corneal densitometry significantly 1 year postoperatively. However, larger studies may show a masked effect on corneal densitometry.
Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcrs.2012.07.041 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Topical Losartan for Corneal Fibrosis: A Case Series With Densitometry Analysis.
Cornea
December 2024
Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, Canada.
Purpose: To present the clinical, topographic, and densitometry outcomes of patients with corneal fibrosis treated with topical losartan.
Methods: In this case series, patients with corneal scars treated with topical losartan 0.8 mg/mL 4 times a day for 6 months were included.
Assessing Changes in Corneal Densitometry in Patients After Small Incision Lenticule Extraction (SMILE).
Cureus
October 2024
Ophthalmology, Hoopes Vision, Draper, USA.
Purpose: The aim is to assess for any lasting changes in corneal densitometry (CD) in patients who underwent small incision lenticule extraction (SMILE) and developed early transient postoperative corneal haze.
Methods: This retrospective chart review analyzed 98 eyes from 49 patients who underwent SMILE at the Hoopes Vision Clinic and had one-year postoperative Pentacam CD (Oculus Optikgeräte GmbH, Wetzlar, Germany). These were compared to 78 eyes from 42 unoperated myopic control patients with documented CD measurements.
A 6-Month Follow-Up Comparative Study of Single-Step Transepithelial Photorefractive Keratectomy (Trans-PRK) Using the StreamLight Software with and without Epithelial Thickness Customization.
Clin Ophthalmol
October 2024
Anterior Segment Department, Miranza Begitek, Donostia-San Sebastián, Spain.
Purpose: To compare corneal aberrometry, densitometry, and refractive outcomes of single-step Transepithelial Photorefractive Keratectomy (Trans-PRK) with and without epithelial thickness customization.
Patients And Methods: This was a prospective, interventional, randomized controlled study. Patients undergoing Trans-PRK using the WaveLight EX500 laser with StreamLight software (Alcon Laboratories, Forth Worth, TX, USA) were randomly assigned to control (55 µm standard epithelial thickness) or customized (thinnest point of epithelial thickness for each patient) groups.
[Pathogenesis of Fuchs endothelial corneal dystrophy, the fibrillar layer and individualized treatment].
Ophthalmologie
October 2024
Department of Ophthalmology, Faculty of Medicine and University Hospital Cologne, University of Cologne, Kerpener Str. 62, 50937, Köln, Deutschland.
Article Synopsis
- Fuchs endothelial corneal dystrophy (FECD) is a genetic and age-related disease leading to the loss of corneal endothelial cells, resulting in corneal swelling and vision issues.
- Advanced FECD often shows a fibrillar layer (FL) on the corneal surface, especially in the inferotemporal quadrant, which can be measured using specialized imaging techniques.
- Current treatments mainly involve corneal transplantation, particularly DMEK surgery, with new approaches like smaller grafts and advancements in imaging for better assessment and planning of surgeries.
Corneal densitometry: A new evaluation indicator for corneal diseases.
Surv Ophthalmol
November 2024
Department of Ophthalmology, the Second Hospital of Jilin University, Changchun, Jilin 130041, China. Electronic address:
Corneal densitometry (CD) uses the biological properties of the cornea to visualize the morphology of the cornea and determine the degree of corneal transparency. At present, it is an emerging metric that has shown promise in various clinical diagnosis and evaluation of eye diseases and surgeries. We introduce the different methodologies used to measure CD.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!