Impact of strabismus management on the retinal microstructure

Abstract

Aim: To examine whether change in retinal structure can improve vision and stereoacuity following strabismus management.Methods: We recruited patients who presented with strabismus from 2017 to 2019. Information on demographics, posterior and anterior segment findings, and strabismus surgery was collected using a pretested online form. Patients’ stereoacuity was examined by employing the Titmus test. The central macular thickness and retinal nerve fiber layer (RNFL) thickness of all the eyes were evaluated through SD-OCT. Stereoacuity examination and OCT were performed again 3 months postoperatively. Result: We recruited 54 patients (mean age: 19.74 ± 9.2 years). Stereoacuity and vision exhibited significant improvements after treatment. Both eyes showed improvement in RNFL thickness but not CMT. Conclusion: Functional stereoacuity changes and structural RNFL changes were noted following appropriate treatment for strabismus.

Short-term effects of horizontal muscle operations on anterior and posterior segment parameters in strabismus patients

“…Atalay et al (1), compared the postoperative CT values of patients who underwent rectus recession or resection (Group 1) with those who underwent oblique muscle myectomy (Group 2) and found that CT increased in Group 1. In a study in which RT and RNFL were evaluated after strabismus surgery, an increase was found in RNFL, but no significant change was found in CT (5). Likewise, in another study in which RT was evaluated on the first day after strabismus surgery, no significant difference was found between pre and postoperative values (20).…”

“…There are studies in literature in which ASPs have been evaluated after strabismus surgery, and there are also studies that have evaluated PSPs (1,5,20). Inan et al (21) evaluated the CT values of four different groups that underwent Rs surgery with OCT and reported a decrease in the short term.…”

“…Strabismus surgery is currently a frequently applied intervention, especially in pediatric patients. It has been reported that changes occur in anterior and posterior segment parameters (ASPs and PSPs) after strabismus surgeries performed due to ocular or extraocular disorders (1)(2)(3)(4)(5). Previous studies have discussed the changes in the anterior segment, especially in the cornea, iris and lens, and it has been concluded that these changes are mostly temporary.…”

“…(6-8) However, there are also publications reporting that they can be long-term (up to 1 year) or permanent (3,9,10). In studies on the posterior segment, changes in the parameters of central retinal thickness (RT), subfoveal choroidal thickness (CT), and retinal nerve fiber layer (RNFL) are predominant (1,5).…”

“…OCT has recently gained importance in the treatment and follow-up of strabismus patients, as it provides valuable information. Especially the changes in ASPs before and after strabismus surgery have started to be a matter of interest in research (1,5).…”