You searched for "Refraction"

2322 results found

Potential mechanism of over / under actions of inferior oblique muscles

In this paper, the authors hypothesise that fusional vergence adaptation, in patients who can fuse in at least some gaze positions, can cause curvature of the non-fixing eye movement paths of patients with apparent overaction or under action of the...

Choroidal thickness in strabismus and amblyopia

The authors examined the effect of exotropia, esotropia, anisometropic amblyopia and hypermetropia on choroidal thickness in a prospective cross section study. The study included 100 patients and 20 controls with a mean age of 8.5±2.9 years; 61 female and 59...

Iranian strabismus prevalence

This study aimed to evaluate the prevalence of heterotropia and heterophoria in Iran. This was a cross-section study undertaken in 2013 with the target population of grade 1 (seven-year-old) children. Seven cities across different geographical locations were included with multistage...

Collamer lenses for accommodative ET

Posterior chamber phakic IOL implantation was used to treat patients with accommodative esotropia (ET) with the goal of eliminating hyperopia and producing orthophoria. Three patients (six eyes) aged 18-22 years had an average follow-up of 17 months ±6.24. The mean...

Development of testing protocols for high and low contrast visual acuity

Dysfunction of the afferent visual system, characterised by impairments in high-contrast visual acuity (HCVA) and low-contrast visual acuity (LCVA) have been demonstrated in some neurological conditions such as multiple sclerosis and Parkinson’s disease. HCVA and LCVA are also potential quantitative...

Capsular tension rings to reduce refractive shift

The study group aimed to determine whether the use of a capsular tension ring (CTR) can increase refractive stability in patients with implantation of two different trifocal intraocular lenses. This was a prospective, consecutive series of eyes which underwent refractive...

Refractive changes over time for fully accom esotropia

The purpose of this study was to determine refractive error changes across time and to define factors contributing to decompensation in patients with fully accomodative esotropia (FAET). This was a retrospective study of 223 patients with a mean age at...

Changes in refractive error in patients with accommodative esotropia after being weaned from hyperopic correction

This is a retrospective review of medical records of 47 patients with refractive ocular accommodative esotropia who achieved emmetropisation and orthotropia without hyperopic glasses correction and were followed up for at least three years. The objective of the study is...

Myopathic ptosis and lower lid retraction surgery

This is a description of a surgical technique which simultaneously addresses both the upper lid ptosis and lower lid retraction in patients with moderate to severe myopathic ptosis. The procedure was performed on 16 eyes of nine patients and involved...

BSRS (British Society of Refractive Surgery) 30th Anniversary Annual Scientific Congress 2023

by Hasan Naveed, YO Representative on BSRS Council. The summer weekend of 8-9 July 2023 saw the British Society for Refractive Surgery (BSRS) host national and international experts and colleagues passionate about all elements of refractive surgery. The sessions, delivered...

Biometry and IOL choice errors

In the next instalment of this series I focus on problems associated with biometry and intraocular lens (IOL) selection for cataract surgery. I have taken previous medicolegal cases I have dealt with and tried to extract some learning points and...

The results of the last survey Apr24

It has been a few years now since we started these surveys and I continue to be amazed by the variance in our practice. As a patient, I think I would expect there to be more consistency and evidence-based practice....