You searched for "heterotropia"

356 results found

Visual consequences of congenital hypothyroidism

This study evaluated the frequencies of ophthalmic abnormalities in Turkish children with a history of congenital hypothyroidism in a retrospective study of 121 children. Median age was nine months (one to 216) at initial ophthalmic examination. Forty children were ex-premature...

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...

Surgery for myopic strabismus

The outcomes are reported of muscle belly union technique with medial rectus recession for cases with restriction according to the results of intraoperative forced duction testing (FDT). Surgery involved isolation of the lateral and superior recti muscles, which were separated,...

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...

Age versus heterophoria and fusional vergence measures

This study aimed to establish the relationship between age, horizontal heterophoria, horizontal vergences, positive / negative fusional vergence and vergence facilities. The study recruited 112 subjects aged 39.8 ±14.97 years (range 18-65) of which 54.5% were female. There were 49...

Detailed overview of diplopia causes and outcomes for a single tertiary care centre

The purpose of this study was to study the aetiology, progression and outcome in patients with binocular diplopia presenting to the ophthalmology department of a tertiary care centre in India. The study had a prospective observational design where all patients...

Testing fusional amplitude

The purpose of this study was to evaluate the effects of varied testing distance and order of testing on fusion amplitudes in subjects with normal eye examinations, along with impact of examination encouragement and subject level of alertness. Average age...

15 prism test for anisometropic amblyopia

The authors aimed to investigate the accuracy of the 15^ base in prism test (BIPT) in detecting amblyopia in anisometropic patients. This was a retrospective study in which the 15^BI was placed before the right eye followed by the left...

Iranian prevalence of convergence / accommodative disorders

The aim of this study was to investigate the frequency of accommodative and convergence disorders in an optometric clinical population and ascertain tests with the highest sensitivity and specificity in detecting these anomalies. The authors gathered information on symptoms, near...

AC/A non-linearity

This study investigated whether or not the response accommodative convergence to accommodation (AC/A) ratio in 30 visually normal subjects is linear with lens presentation order counterbalanced. Accommodative response was measured using the Shin Nippon SRW 500 infrared autorefractor. Accommodation was...

Single muscle surgery for hypertropia

The authors undertook partial tenotomies combined with graded marginal recession of single vertical rectus muscles to treat small angle hypertropia in four adults with fusion potential. They report dose response, surgical technique and outcomes. Dose response closely matched the theoretical...

Central fixation testing in microtropia

This study compared the two assessment methods of the 4D prism test and ocular fixation assessment in order to identify micro strabismus with identity. The study included 112 children; 46 males and 66 females. Anisometropia was present in 108 patients...