Asymmetrical accommodation in hyperopic anisometropic amblyopia

Toor, Sonia; Horwood, Anna M.; Riddell, Patricia M.

doi:10.1136/bjophthalmol-2017-310282

Cited by 22 publications

(17 citation statements)

References 16 publications

(23 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[23] In the amblyopic eyes, the accommodation was reduced compared to the fellow eyes. [24] We suggest that the amblyopic eyes with widened stromal areas had more nonvascular smooth muscle cells and had better accommodation. The better accommodation induced the improvement of the visual acuity.…”

Section: Discussionmentioning

confidence: 77%

See 1 more Smart Citation

Effect of optical correction on choroidal structure in children with anisohypermetropic amblyopia

et al. 2020

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 77%

“…The better accommodation induced the improvement of the visual acuity. [24] Thus, the widened stromal area in both the amblyopic and fellow eyes after treatment is probably a response to the optical correction of the refractive error.…”

Section: Discussionmentioning

confidence: 99%

Effect of optical correction on choroidal structure in children with anisohypermetropic amblyopia

et al. 2020

View full text Add to dashboard Cite

“…Functional amblyopia is a visual developmental disorder consisting of reduced best-corrected visual acuity in one or rarely in both eyes without the presence of any ocular pathology [1]. Due to the abnormalities in visual processing occurring in amblyopia, there are also deficits in contrast sensitivity, accommodation, binocular vision, fixation, saccades, color, and form and motion perception, among others [2][3][4][5][6][7][8][9]. ere are four types of amblyopia depending on its etiology: anisometropic amblyopia, strabismic amblyopia, mixed amblyopia (if anisometropia and strabism coexist), and deprivation amblyopia (if there was pathology during visual development which struggled the eye stimulation) [7].…”

Section: Introductionmentioning

confidence: 99%

Active Vision Therapy for Anisometropic Amblyopia in Children: A Systematic Review

Hernández-Rodríguez

Piñero

2020

Journal of Ophthalmology

View full text Add to dashboard Cite

Purpose. The aim of the study was evaluation of the scientific evidence about the efficacy of vision therapy in children and teenagers with anisometropic amblyopia by performing a systematic literature review. Methods. A search was performed using 3 searching strategies in 4 different databases (PubMed, Web of Science, Scopus, and PruQuest). The quality of the included articles was evaluated using two tools for the risk of bias assessment, ROBINS-I for nonrandomized studies of intervention (NRSI), and ROB 2.0 for randomized clinical trials. Results. The search showed 1274 references, but only 8 of them passed the inclusion criteria after the complete text review. The articles that were finally included comprised 2 randomized control trials and 6 nonrandomized studies of intervention. These articles provided evidence supporting the efficacy of vision therapy for the treatment of anisometropic amblyopia in children and teenagers. Assessment of the risk of bias showed an appropriate risk of bias for the randomized control trials, but a high risk of bias for nonrandomized studies of intervention (NRSI). A main source of risk of bias for NRSI was the domain related to the measurements of the outcomes, due to a lack of double-blind studies. Conclusion. Vision therapy is a promising option for the treatment of anisometropic amblyopia in children and teenagers. However, the level of scientific evidence provided by the studies revised is still limited, and further randomized clinical trials are necessary to confirm the results provided to date and to optimize the vision therapy techniques by knowing the specific neural mechanisms involved.

show abstract

“…When presented with an asymmetric accommodative stimulus, some studies have found an equal accommodative response between eyes [ 27 , 28 ], while others have found a difference in accommodative power between eyes of up to 25% after a training period [ 29 , 30 ]. It is also known that aniso-accommodation is prevalent in anisometropic amblyopia [ 31 , 32 ]. Within our study, the difference in accommodative demand between the right and left eye could have been responsible for the lack of change in IOP within the reflexively accommodating eye (left).…”

Section: Discussionmentioning

confidence: 99%

Accommodative Exercises to Lower Intraocular Pressure

Stokkermans

Reitinger

Tye

et al. 2020

Journal of Ophthalmology

View full text Add to dashboard Cite

Purpose. This study investigated how a conscious change in ocular accommodation affects intraocular pressure (IOP) and ocular biometrics in healthy adult volunteers of different ages. Methods. Thirty-five healthy volunteers without ocular disease or past ocular surgery, and with refractive error between −3.50 and +2.50 diopters, were stratified into 20, 40, and 60 year old (y.o.) age groups. Baseline measurements of central cornea thickness, anterior chamber depth, anterior chamber angle, cornea diameter, pupil size, and ciliary muscle thickness were made by autorefraction and optical coherence tomography (OCT), while IOP was measured by pneumotonometry. Each subject’s right eye focused on a target 40 cm away. Three different tests were performed in random order: (1) 10 minutes of nonaccommodation (gazing at the target through lenses that allowed clear vision without accommodating), (2) 10 minutes of accommodation (addition of a minus 3 diopter lens), and (3) 10 minutes of alternating between accommodation and nonaccommodation (1-minute intervals). IOP was measured immediately after each test. A 20-minute rest period was provided between tests. Data from 31 subjects were included in the study. ANOVA and paired t-tests were used for statistical analyses. Results. Following alternating accommodation, IOP decreased by 0.7 mmHg in the right eye when all age groups were combined ( p = 0.029). Accommodation or nonaccommodation alone did not decrease IOP. Compared to the 20 y.o. group, the 60 y.o. group had a thicker ciliary muscle within 75 μm of the scleral spur, a thinner ciliary muscle at 125–300 μm from the scleral spur, narrower anterior chamber angles, shallower anterior chambers, and smaller pupils during accommodation and nonaccommodation ( p ’s < 0.01). Conclusion. Alternating accommodation, but not constant accommodation, significantly decreased IOP. This effect was not lost with aging despite physical changes to the aging eye. A greater accommodative workload and/or longer test period may improve the effect.

show abstract

Asymmetrical accommodation in hyperopic anisometropic amblyopia

Cited by 22 publications

References 16 publications

Effect of optical correction on choroidal structure in children with anisohypermetropic amblyopia

Effect of optical correction on choroidal structure in children with anisohypermetropic amblyopia

Active Vision Therapy for Anisometropic Amblyopia in Children: A Systematic Review

Accommodative Exercises to Lower Intraocular Pressure

Contact Info

Product

Resources

About