Researchprogress of intraocular lens power calculation formulas for pediatric secondary implantation
Journal Title: Eye Science (Yanke Xuebao) - Year 2024, Vol 39, Issue 6
Abstract
Secondary intraocular lens (IOL) implantation is a common treatment for pediatric aphakia. The accurate prediction of IOL power calculation plays a pivotal role in the postoperative development and improvement of visual function for pediatric secondary IOL implantation. Current IOL power calculation formulas were developed based on data from adult phakic eyes and displayed good performance in adult population. However, the formulas showed poor performance in pediatric aphakic population due to the following reasons: 1) In these pediatric aphakic patients, the unavailability of phakic anterior chamber depth (the distance from corneal epithelium to the anterior surface of the lens) and lens thickness (LT) greatly limits the application of some IOL power calculation formulas. 2) IOL power calculation formulas predict the effective lens position on the basis of in-the-bag IOL implantation, whereas sulcus implantation is more widely used in pediatric secondary implantation. Effective lens position in capsular placement is more posterior to ciliary sulcus IOL placement. When applying the initial IOL power calculated for capsular implantation to sulcus implantation, it can lead to refractive errors. 3) Adult eyes have completed their development, with target refractions often being emmetropic or myopic (−3.00 ~ +1.00 D), while pediatric eyes are still developing, necessitating the calculation of an appropriate hyperopic (+0.50 ~ +12.00 D) target refraction to accommodate refractive changes due to ocular growth. To achieve the predetermined target refractive outcomes, the selection and optimization of IOL power calculation formulas is critically important for pediatric secondary IOL implantation.
Authors and Affiliations
Yingshi ZOU, Jiaxin JIN, Zhenzhen LIU, Yizhi LIU
Keywords
Related Articles
- EP ID EP761462
- DOI 10.12419/24070203
- Views 35
- Downloads 0
Progress in diagnosis and treatment of lens-induced glaucoma
Lens-induced glaucoma (LIG) is a kind of secondary glaucoma caused by lens proteins or anatomic abnormality of the lens. Based on the pathogenesis, LIG is classified as phacolytic glaucoma, lens-particle induced glaucoma...
Application of local anesthesia assisted with sedation and analgesia of low-dose propofol combined with remifentanil in adult strabismus surgery
[Objective:] To explore the effect of local anesthesia assisted with sedation and analgesia of low-dose propofol combined with remifentanil in adult strabismus surgery. [Methods:] This study was a prospective cohort stud...
Advances in the application of artificial intelligence in diagnosis and treatment of cataract
Artificial intelligence (AI) has been widely applied and promoted in ophthalmology, and has gradually become a research hotspot in the diagnosis and treatment of many common ophthalmopathies, including diabetic retinopat...
Research progress of organelle degradation and its mechanisms during lens development
During terminal differentiation of lens fiber cells, nuclei and other organelles experience programmed elimination. This process is essential for the maintenance of lens transparency. However, the mechanisms underlying l...
Acquired visual loss attributed to an accommodative spasm after FS-LASIK surgery: a case report
A 28-year-old man was referred to our hospital because of blurred vision in both eyes after LASIK flap made by femtosecond laser surgery for 1 month. The best corrected visual acuity based on computerized optometry was 0...