You searched for "Refraction"

1941 results found

The ‘art’ of refraction – designing a refraction course

Learning how to refract requires theoretical knowledge, practice and determination. Refraction is a notoriously challenging skill to acquire and the competing demands on junior ophthalmologists can often be restrictive of the development of this core skill. To consolidate theory learnt...

Greater accuracy of cycloplegic refraction

The authors conducted this study on 5320 pre-school (four to six-year-old) and 6475 school (seven to ten years) children to compare the results of final glasses prescription based on cycloplegic refraction with atropine to those of non-cycloplegic refraction. For younger...

IOL effect on refraction

The authors aimed to evaluate the effect of age at primary intraocular lens (IOL) implantation on the rate of refractive growth during childhood. This was a retrospective study of 296 eyes of 219 patients. Forty-six met inclusion criteria; 28 unilateral...

How to pass the Refraction Certificate

Unfortunately, I had the pleasure of getting to know this exam intimately. With adequate preparation this does not have to be the case for most people. The exam has recently changed to consist of 10 OSCE style stations (previously 12)....

Spot screen versus cycloplegic refraction

This study compared the spherical, cylindrical and spherical equivalent values obtained by the Spot screener before and after induction of cycloplegia with the values of cycloplegic refraction to explore the application value of the Spot screener in refractive error screening...

Refraction under GA in children using cycloplegic refraction as a reference

The authors aimed to compare the measurements of cycloplegic refraction and refraction (R1-1) under general anaesthesia (GA) with automated refraction (ARF) in paediatric patients and to determine the impact of GA on accommodation. The study included 222 eyes of 222...

The revolutionary Chronos Automated Binocular Refraction System with SightPilot® guided refraction software

Topcon Chronos is a complete digital refraction solution combining binocular objective autorefraction, keratometry and subjective refraction in a single device.

Refraction results in ROP with and without IVB

The authors aimed to compare refractive results of intravitreal bevacizumab (IVB) injection in premature neonates with retinopathy of prematurity (ROP) versus infants with spontaneous regression of ROP. The study included 87 infants (174 eyes). Group 1 included 38 infants (76...

Refraction planning in cataract: avoid creating an unhappy patient

“It is much more important to know what sort of a patient has a disease than what sort of a disease a patient has.” William Osler The focus of this paper is the prevention of an unhappy patient following cataract...

Changes in axial length and refraction in young Chinese school children

The authors aimed to assess refractive error and axial length in children aged seven to eight years (grades 1-2) starting education in South China. The study reviewed 301 students and obtained data for analysis from 291 (50.2% female). Average axial...

Self refracting – child’s play?

Uncorrected refractive error was the leading cause of vision impairment in the world in 2010. Although refractive error may be safely and effectively corrected with spectacles, lack of well-trained refractionists in settings of limited resources may be a major barrier....

AlloDerm for correction of lower lid retraction

This is a retrospective review of 95 eyes of 54 patients undergoing orbital decompression for Graves’ orbitopathy. All patients had a swinging eyelid approach across the whole of the lower lid. Thirty-six eyes also had insertion of a 0.3mm thick...