Background: The refractive outcomes of glaucoma surgeries, particularly their effect on astigmatism, are incompletely understood.
Main Body: Trabeculectomy is associated with a considerable amount of with-the-rule astigmatic change in the immediate postoperative period. This is followed by a gradual against-the-rule shift. These changes are altered with the use of mitomycin C (MMC). Non-penetrating surgery such as deep sclerectomy is also associated with a similar or smaller degree of induced astigmatism. Minimally invasive glaucoma surgery appears to be astigmatically neutral. There is no clear evidence regarding refractive outcomes of glaucoma drainage device surgery.
Conclusions: Induced astigmatism may account for a reduction in unaided visual acuity in the early postoperative period following a successful trabeculectomy. These changes appear to stabilise at 3 months, and it would be prudent to defer the prescription of new glasses until this time. If sequential cataract surgery is to be performed, toric intraocular lenses can be a useful option for astigmatic correction.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5691392 | PMC |
| http://dx.doi.org/10.1186/s40662-017-0090-x | DOI Listing |
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!