[Correction of high-degree hyperopia by multiple pseudophakia].

Abstract

The present study was undertaken to create a physicomathematical model of multiple pseudophakia and to investigate its method in correcting high-degree hyperopia. On the basis of the calculation of spherical aberrations, the authors have proposed recommendations for combining intraocular lenses (IOL), as well as developed and tested the modified formula for calculating the focal power of intracapsularly implanted IOLs. They provide a rationale for the increased clearly visible space depth phenomenon observed in patients with multiple pseudophakia and have calculated the reflection light energy loss caused by the presence of two artificial lenses. A clinical trial has demonstrated that multiple pseudophakia is an available, effective, and predictable method for correction of postcataract aphakia in patients with hyperopia, as well as high-degree hyperopia in patients over 45 years of age who have transparent lenses, which ensures high uncorrected visual acuity and performance at close range, without wearing corrective presbyopic spectacles or which diminishes the dependence on them.

• Authors: N E Temirov, V V Pogorelova
• Journal: Vestnik oftalmologii (Vestn Oftalmol) 2007 Nov-Dec Vol. 123 Issue 6 Pg. 29-32 ISSN: 0042-465X [Print] Russia (Federation)
• PMID: 18225522 (Publication Type: English Abstract, Journal Article)

Topics

• Follow-Up Studies
• Humans
• Hyperopia (physiopathology, surgery)
• Lens Capsule, Crystalline (surgery)
• Lens Implantation, Intraocular (methods)
• Middle Aged
• Models, Theoretical
• Pseudophakia (physiopathology)
• Refraction, Ocular (physiology)
• Severity of Illness Index
• Treatment Outcome
• Visual Acuity