AI Article Synopsis
- A clinical trial was conducted on 255 cataract surgeries to compare induced astigmatism from various incision and closure techniques at multiple postoperative intervals.
- Results indicated that scleral pocket incisions generally produced lower astigmatism than limbal incisions, with significant differences noted at one day and one week.
- The horizontal, 5-mm, sutureless scleral tunnel incision was found to have the least induced astigmatism and allowed for a quicker stability in refraction compared to other methods.
Article Abstract
A single center, single surgeon, nonrandomized, prospective clinical trial was performed comparing the keratometric induced astigmatism by different types of incisions and closures, one day, one week, one month and three months after 255 cataract surgeries. After phacoemulsification, or in rare cases after extracapsular cataract extraction, through a scleral pocket or limbal incision, patients received either a 5 x 6 mm, 5.5 mm, or 6 mm diameter polymethylmethacrylate optic posterior chamber intraocular lens. Incision was closed with either none, one horizontal or radial, or running 10-0 nylon suture. Vector analysis calculations of prism diopters of mean postoperative-induced keratometric astigmatism showed a trend to lesser values at each interval in scleral pocket incisions but statistically significant difference only at 1 day and 1 week between 9-mm and 6-mm limbal, and 5-mm and 6-mm scleral pocket incisions. Other subgroup analyses, including incision shape and distance from limbus, and type of suture, did not reach statistical significance. Horizontal, 5-mm, sutureless scleral tunnel incision showed less induced astigmatism with more rapid stable refraction.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Dynamic Accommodation Responses in Subjects Wearing Myopia Control Spectacles Modifying Peripheral Refraction.
Invest Ophthalmol Vis Sci
January 2025
Laboratorio de Óptica, Universidad de Murcia, Campus de Espinardo, Murcia, Spain.
Purpose: Peripheral optics have been suggested to play a role in myopia progression, with accommodation responses also considered a potential contributor. This study aimed to investigate whether modifications in peripheral optics through different spectacle lenses affect accommodation responses.
Methods: Dynamic accommodation responses were assessed using a double-pass instrument while switching the target from distance (3 m for 3 seconds) to near (0.
Effect of induced astigmatism on vestibulo-ocular reflex.
Clin Exp Optom
January 2025
Department of Optometry, School of Paramedical and Rehabilitation Sciences, Mashhad University of Medical Sciences, Mashhad, Iran.
Clinical Relevance: The vestibular-ocular reflex stabilises the retinal image and maintains balance during head movement. Astigmatism is one of the common refractive errors that can reduce the quality of visual inputs.
Background: The purpose of this study was to investigate the effect of induced astigmatism on the function of the vestibular-ocular reflex.
Background: To determine whether accounting for posterior corneal surgically induced astigmatism (SIA) would improve toric intraocular lens power calculation prediction error.
Methods: A total of 189 eyes of 148 patients undergoing routine cataract surgery were included in the study. Standard and posterior keratometry were measured pre- and postoperatively.
The clinical outcome of implantable collamer lens in corneal ectasia post astigmatic keratotomy.
Int J Surg Case Rep
January 2025
King Khaled Eye Specialist Hospital, Riyadh, Kingdom of Saudi Arabia. Electronic address:
Introduction: Implantable collamer lens (ICL) is a posterior chamber phakic intraocular lens. It is usually indicated for high refractive error correction that cannot be treated by laser vision correction due to physical limitations.
Case Presentation: 39 years old male with a past ocular history of keratoconus underwent astigmatic keratotomy followed by crosslinking in both eyes a couple of years later due to signs of corneal ectasia progression.
Purpose: To evaluate a new regression-derived nomogram for high myopic astigmatism in small incision lenticule extraction (SMILE) surgery.
Methods: In this prospective study, data from 180 eyes with myopic astigmatism ranging from -2.50 to -4.
Want 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!