Mehmet MURAT, Nilay CELEBİ, Çetin Akpolat

Evaluation of strabismus surgery effects on anterior segment measurements using pentacam

To evaluate and compare preoperative and postoperative anterior segment parameters in patients who underwent unilateral or bilateral medial rectus muscle surgery. Fifty-one eyes of 30 patients were enrolled in the retrospectively designed study. Anterior segment parameters were measured via Pentacam prior to surgery and after the surgery. Besides anterior segment evaluation detailed routine ophthalmic examination was also performed for each participant. All patients had successful surgery correction. No complication was observed during follow-up period. No changes were noted in visual acuity and intraocular pressure. Statistical changes were observed in corneal astigmatism (P=0.009/0.005), corneal volume (P=0.012), and anterior chamber volume (P=0.024). Strabismus surgery might cause anterior segment parametric changes in short-term follow up, which might be reversible through the compensation process. Scheimpflug imaging is an anterior segment imaging system and these changes can be measured by Pentacam.

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Kim MH, Chung H, Kim WJ, et al. Effects of Surgical Assistant’s Level of Resident Training on Surgical Treatment of Intermittent Exotropia: Operation Time and Surgical Outcomes. Korean J Ophthalmol. 2018;32:59-64.

Lim SH, Hwang BS, Kim MM. Prognostic factors for recurrence after bilateral rectus recession procedure in patients with intermittent exotropia. Eye (Lond) 2012;26:846-52.

Gezer A, Sezen F, Nasri N, et al. Factors influencing the outcome of strabismus surgery in patients with exotropia. J AAPOS. 2004;8:56–60.

Emre S, Cankaya C, Demirel S, et al. Comparison of preoperative and postoperative anterior segment measurements with Pentacam in horizontal muscle surgery. Eur J Ophthalmol. 2008;18:7-12.

Bagheri A, Farahi A, Guyton DL. Astigmatism induced by simultaneous recession of both horizontal rectus muscles. J AAPOS. 2003;7:42-6.

Betts C, Olitsky S. Corneal astigmatic effects of conventional recession vs suspension recession (“hang-back”) strabismus surgery: a pilot study. Binocul Vis Strabismus Q. 2006;21:211-3.

Killer HE, Bahler A. Signifi cant immediate and long-term reduction of astigmatism after lateral rectus recession in divergent Duane’s syndrome. Ophthalmologica. 1999;213:209-10.

Preslan MW, Cioffi G, Min YI. Refractive error changes following strabismus surgery. J Pediatr Ophthalmol Strabismus. 1992;29:300-4.

Hainsworth DP, Bierly JR, Schmeisser ET, Baker RS. Corneal topographic changes after extraocular muscle surgery. J AAPOS. 1999;3:80-6.

Shankar H, Taranath D, Santhirathelagan CT, et al. Anterior segment biometry with the Pentacam: Comprehensive assessment of repeatability of automated measurements. J Cataract Refract Surg. 2008;34:103-13.

Fix A, Baker JD. Refractive changes following strabismus surgery. Am Orthop J 1985;35:59-62.

Hutcheson KA. Large, visually significant, and transient change in refractive error after uncomplicated strabismus surgery. J AAPOS 2003;7:295-7.

Kwitko S, Feldon S, McDonnell PJ. Corneal topographic changes following strabismus surgery in Graves’ disease. Cornea 1992;11:36-40.

Cerviño A, Gonzalez-Meijome JM, Ferrer-Blasco T, et al. Determination of corneal volume from anterior topography and topographic pachymetry: application to healthy and keratoconic eyes. Ophthalmic Physiol Opt. 2009;29:652-60.

Mannion LS, Tromans C, O’Donnell C. Reduction in corneal volume with severity of keratoconus. Curr Eye Res. 2011;36:522-7.

Kwito S, Sawusch MR, McDonnell PJ, et al. Effect of extraocular muscle surgery on corneal topography. Arch Ophthalmol 1991; 109:873-8.

Jung JH, Choi HY. Comparison of preoperative and postoperative anterior segment measurements with Pentacam® in strabismus surgery. J Pediatr Ophthalmol Strabismus. 2012;49:290-4.

Noh JH, Park KH, Lee JY, et al. Changes in refractive error and anterior segment parameters after isolated lateral rectus muscle recession. J AAPOS. 2013;17:291-5..