Related Experiment Video
Updated: May 8, 2026

08:27
Quantification of Oculomotor Responses and Accommodation Through Instrumentation and Analysis Toolboxes
Published on: March 3, 2023
The effect of reducing hyperopic correction in patients with accommodative esotropia
1Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
Summary
Undercorrecting hyperopic refractive error in accommodative esotropia patients maintained stable visual acuity and eye alignment for two years. This approach proved safe and effective for managing this condition without negative impacts.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Optometry
Background:
- Accommodative esotropia is a common form of strabismus in children.
- Hyperopic refractive error is a significant contributing factor.
- Current management often involves full refractive correction.
Purpose of the Study:
- To evaluate the long-term effects of spectacle undercorrection in patients with accommodative esotropia.
- To assess the stability of visual acuity, eye alignment, and binocular function over a 2-year period.
Main Methods:
- A prospective study involving 39 patients with refractive accommodative esotropia.
- Patients received maximal tolerable spectacle undercorrection (up to -1.5 D).
- Follow-up included assessments of visual acuity, angle of deviation, stereoacuity, and fusional ability at 2 years.
Main Results:
- No significant deterioration in visual acuity, angle of deviation, stereoacuity, or fusional ability was observed in any patient.
- Minor changes in the angle of deviation (2-4 prism diopters) were noted in only 3 patients.
- The undercorrection strategy was well-tolerated, with no adverse effects reported.
Conclusions:
- Spectacle undercorrection of hyperopic refractive error is a safe and effective strategy for managing accommodative esotropia.
- This approach leads to stable eye alignment and preserved binocular function over a 2-year follow-up.
- Further research may explore long-term outcomes and optimal undercorrection levels.
Related Concept Videos
Focusing of Light in the Eye
Light rays enter the eye through the cornea, a transparent dome-shaped tissue that is the eye's outermost layer. The cornea bends or refracts, light rays traveling to the pupil. The shape of the cornea determines how much of the light is bent and whether the image will be focused correctly on the retina at the back of the eye. Once the light has passed through both refraction layers, it converges into a single focal point onto a small area. This is where photoreceptors start transforming...
Open Angle Glaucoma: Treatment
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...
Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...
Accessory Structures of the Eye
Optical perception, or vision, is an extraordinary sense dependent on converting light signals received via the ocular organs. These organs, known as eyes, are securely positioned within the bony cavities of the skull, called orbits. The orbits serve a dual purpose: a protective shield for the ocular globes and a stable attachment point for the soft ocular tissues. The eye's external protective mechanisms include the eyelids, which are edged with lashes that act as a barrier against foreign...

