You searched for "refraction"

2926 results found

Comparison of vertical rectus muscle transpositions

The purpose of this study was to evaluate both the amount of correction obtained and the postoperative drift that occurred with two frequently used vertical rectus muscle transposition (VRT) procedures to determine the ideal immediate postoperative alignment. Twenty-seven patients underwent...

Retinal structural features of CMV retinitis

Confocal adaptive optics (AO) technology has enabled cellular level retinal imaging, including imaging of photoreceptors and blood flow. Adaptive optics scanning laser ophthalmoscopy (AOSLO) is a technology that provides high resolution and high contrast retinal images by correcting ocular aberrations....

Orbis eye health programme integrated into school curriculum in Nepal

Leading eyecare charity Orbis and Nepal’s National Society of Comprehensive Eye Care (NNJS) have worked together since 2019 to implement a programme called REACH (Refractive Error Among Children) in Eastern Nepal.

Conference Preview: UKISCRS, UKISOP and YOP 2025

London’s calling, and we will be rejoining the United Kingdom & Ireland Society of Cataract & Refractive Surgeons (UKISCRS), the Young Ophthalmologists Programme (YOP), and United Kingdom & Ireland Society of Ophthalmic Practitioners (UKISOP) between 12–14 November. The former will...

Carbonic anhydrase II autoantibody specificity in retinopathy

Autoimmune retinopathy (AR) can be divided into three different categories, paraneoplastic retinopathy, including recoverin-associated retinopathy and melanoma-associated retinopathy, non-paraneoplastic autoimmune retinopathy, combined paraneoplastic optic neuropathy and retinopathy (CAR). These conditions are characterised by circulating anti-retinal autoantibodies, possibly due to a...

Viral uveitis

This review covers viral causes of anterior uveitis. A viral aetiology should be suspected when anterior uveitis is accompanied by ocular hypertension, diffuse stellate keratic precipitates or the presence of iris atrophy. Most common viruses associated are herpes simplex, varicella-zoster...

Dead bag syndrome: a new and rare cause of late IOL dislocation

The dead bag syndrome has recently been described as a cause of late spontaneous intraocular lens (IOL) subluxation and / or dislocation. The capsular bag remains clear years after surgery and then becomes diaphanous and floppy. The authors explanted seven...

Fusional vergence measurement

This paper reports a systematic review to address two objectives: 1, to compare the normative values of tests measuring fusional vergence; 2, to investigate sources of heterogeneity of prism accuracy. The review was conducted according to PRISMA guidelines with a...

Brain abnormality as risk factor for consecutive exotropia

The authors evaluated and compared the cerebral MRI findings in operated infantile esotropia cases with and without consecutive exotropia. This was a retrospective study of 28 patients. Group 1 had 17 cases of consecutive exotropia with a mean follow-up of...

IOL power in short eyes

Prospective analysis of 269 eyes of 269 patients between 2017 and 2020, with axial length (AL) of 22mm or less. New principles for calculating IOL power were recently developed, including formulas based on paraxial ray-tracing (Barrett and Olsen) and based...

Comparing tensile strengths of two scleral fixated intraocular lenses: CT-Lucia and MA60

The authors designed a benchtop model to measure the tensile strengths and resistance to breakage of the haptics and haptic-optic junctions of the CT Lucia 602 (Carl Zeiss, California) and AcrySof MA60 (Alcon Laboratories, Texas) IOLs. For the haptic breakage...

Causes of abnormal head postures – literature review

Yadegari reports a narrative literature review for abnormal head postures (AHPs) with discussion on different causes. This review summarises the control of a normal head posture before discussing differences of ocular vs non-ocular AHPs. Ocular AHPs may be adopted to...