Related Experiment Video
Updated: Feb 8, 2026
05:46
Author Spotlight: Advancements in Refractive Surgical Correction for Presbyopia and Exploring Postoperative Visual Acuity
Published on: September 20, 2024
825
Monocular surgery to correct large-angle esotropia: a 10-year follow-up study
Edmilson Gigante1, Rodrigo Abdalla Romão1, Fátima de Jesus Passador Valério1
1Department of Strabismus, Hospital Regional de Presidente Prudente, Presidente Prudente, SP, Brazil.
Arquivos Brasileiros De Oftalmologia
|June 21, 2018
Summary
Monocular surgery for large-angle esotropia demonstrated stable results over 10 years in both children and adults. This surgical approach proved safe, with no significant consecutive exotropia observed long-term.
Area of Science:
- Ophthalmology
- Strabismus Surgery
- Pediatric Ophthalmology
Background:
- Large-angle esotropia often requires surgical intervention.
- Monocular surgical techniques aim for effective correction of significant eye deviations.
- Long-term stability and potential complications like consecutive exotropia are critical considerations.
Purpose of the Study:
- To evaluate the 10-year surgical stability of monocular surgery for large-angle esotropia.
- To assess the safety and efficacy of this technique in both pediatric and adult patients.
- To investigate the incidence of consecutive exotropia following the surgical correction.
Main Methods:
- A 10-year follow-up study was conducted on patients who underwent monocular surgery for large-angle esotropia.
- Angles of deviation were measured using prism cover testing and the Krimsky method.
- Statistical analysis included Student's t-test and McNemar's test to compare outcomes.
Main Results:
- No significant differences in deviation angles were found between 6 months and 10 years post-surgery (p=0.922).
- Surgical outcomes were comparable between adult and pediatric patient groups (p=0.767).
- Only five of 40 patients developed small-angle exotropia; large consecutive exotropia was not observed.
Conclusions:
- Monocular surgery utilizing large medial rectus recessions and lateral rectus resections is a viable and safe option for correcting large-angle esotropia.
- The technique provides stable results in both children and adults over the long term.
- The risk of developing significant consecutive exotropia is low with this surgical approach.
Related Concept Videos
01:15Distance Corrections
297
To achieve precise distance measurements, especially in surveying and construction, certain corrections must be applied to account for potential sources of error like the standardization errors, temperature variations, and slope adjustments.Standardization error emerges when measurement equipment undergoes changes, such as wear, repairs, or weather impacts. To address this, surveyors compare the equipment’s readings to a standard. This process identifies any deviation that might lead to...
297
01:20Power Factor Correction
547
The power transmission to a factory involves the transfer of apparent power, a combination of active and reactive power. The power factor measures how effectively electrical power is converted into useful work output. The ratio of the real power (KW) that does the work to the apparent power (KVA) supplied to the circuit.
547
01:13Contact Angle
22.1K
When a solid is dipped inside a liquid, the liquid surface becomes curved near the contact. For some solid–liquid interfaces, the liquid is pulled up along the solid, while for others, the liquid surface is convex or depressed near the solid surface. This phenomenon can be explained using the concept of cohesive and adhesive forces.
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
The adhesive force is the molecular force between molecules of different materials, that is, between the molecules of the solid and the liquid. The cohesive...
22.1K
01:27Open Angle Glaucoma: Treatment
1.0K
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
1.0K
01:13Angle of Twist: Problem Solving
802
An electric motor applies a torque of 700 N·m to an aluminum shaft, triggering a stable rotation. Two pulleys, B and C, are subjected to torques of 300 N·m and 400 N·m, respectively. The modulus of rigidity is provided as 25 GPa. With the knowledge of the length and diameter of each segment, the twist angle between the two pulleys can be computed. First, a section cut is made between pulleys B and C, and the cut cross-section is analyzed using a free-body diagram. Given that the torque...
802
01:14NMR Spectrometers: Resolution and Error Correction
1.1K
When magnetic nuclei in a sample achieve resonance and undergo relaxation, the signal detected in NMR is an approximately exponential free induction decay. Fourier transform of an exponential decay yields a Lorentzian peak in the frequency domain. Lorentzian peaks in an NMR spectrum are defined by their amplitude, full width at half maximum, and position, where the peak width is governed by the spin-spin relaxation time alone. In real experiments, however, the applied magnetic field is rendered...
1.1K