You searched for "Refraction"

3066 results found

Retreatment of myopic LASIK with femtosecond and custom ablation

The purpose of this study was to identify the risk factors for retreatment post laser in situ keratomileusis (LASIK). A retrospective chart review was carried out for a four-year period and all patients who had undergone LASIK at the Boston...

Ophthalmology

The textbook is a large, single volume that ideally needs to be desk or table-supported, as its sheer weight makes it virtually impossible to rest comfortably on ones lap. The book is compiled by its two lead authors and editors...

Early refractive correction promotes esotropia control

This study sought to determine the incidence and characteristics of esotropia in a Northern Ireland population of children <7 years old in a one-year period. The authors report a 2013 cohort in which the area catchment had 29,365 children under...

Iranian values for childhood convergence

The authors aimed to determine near point of convergence (NPC) values in a population-based study in Iranian schoolchildren with a large sample size. They explored its relation to factors such as age, gender, refractive error and near point of accommodation....

An unusual case of silicone oil in the anterior chamber simulating intraocular implant

Silicone oil internal tamponade has been used for over 50 years, even prior to pars plana vitrectomy [1].Over a course of time silicone oil may migrate to the anterior chamber through the pupil. This may disperse in the form of...

Anisometropia following cataract surgery and its non-surgical treatment

The desired result of cataract surgery is improved visual acuity without the use of spectacles. In practice most patients following initial cataract extraction are likely to be symptomatic of anisometropia giving rise to prismatic effects (anisophoria) and unequal retinal image...

Piggyback toric IOLs in complex cases

This study evaluates the outcome of toric sulcus fixated lenses (MS 614/714 TPB (Human Optics, Germany) in 21 eyes with high astigmatism. The cases included previous penetrating keratoplasty (n=15), post cataract surgery astigmatism (n=3), rotation of in-the-bag toric IOL (n=1),...

Is laser refractive surgery safe for patients taking isotretinoin?

This multicentre, retrospective, interventional case series assesses the outcomes of laser in situ keratomileusis (LASIK) and photorefractive keratectomy (PRK) in 113 patients taking isotretinoin between January 2003 and September 2017. Isotretinoin is contraindicated for LASIK and PRK and patients are...

Choice of cycloplegia regime

The purpose of this randomised control trial (RCT) was primarily to compare the refractive outcome of atropine 0.5% (A) instilled twice daily at home 2.5 days before measurement versus two drops of 1% cyclopentolate (CC) in one eye versus one...

Combined PRK and CXL in keratoconus

This study aimed to investigate the results after photorefractive keratectomy (PRK) followed immediately by standard 30-minute corneal cross-linking (CXL) for keratoconus. This retrospective study included 26 eyes of 16 patients with keratoconus. Uncorrected distance visual acuity (UDVA), corrected distance visual...

Recession and resection surgery in TED

The aim was to investigate changes in ocular ductions in thyroid eye disease (TED) patients undergoing recession in comparison to recession / resection surgery. This was a retrospective study of 119 patients with inclusion of 102 eyes in final analysis....

Orbital filler for enophthalmos in Parry-Romberg syndrome

This is a retrospective review of three patients with enophthalmos in sighted eyes secondary to Parry-Romberg syndrome. The patients were all female, aged between 24 and 54. All three patients had 4mm of relative enophthalmos prior to treatment. They each...