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Effects of Chalazion Excision on Ocular Aberrations

Sabermoghaddam, Ali A. MD; Zarei-Ghanavati, Siamak MD, FICO; Abrishami, Mojtaba MD

doi: 10.1097/ICO.0b013e318268d6b3
Clinical Science

Purpose: The goal of this study was to compare higher-order aberrations before and after upper lid chalazion excision.

Methods: Fourteen eyes from 12 patients (8 females, mean age: 28.7 ± 2.7 years) with upper lid chalazion were enrolled in this prospective interventional case series. Chalazia were excised by standard transconjunctival vertical incision. Ocular aberrations were evaluated by aberrometry (ZyWave) before and 2 months after chalazion excision.

Results: Root mean square of total higher-order aberrations decreased from 0.67 ± 0.12 to 0.43 ± 0.15 μm (P = 0.012) after excision. The root mean square of Zernike orders in the vertical and horizontal trefoil and horizontal coma were decreased after excision. Orbscan IIz tomography showed a statistically significant decrease in 5 mm zone irregularity (P = 0.027) and an increase in minimum simulated keratometry after surgery (P = 0.046).

Conclusions: Chalazion increases higher-order aberrations, as measured by the Hartmann–Shack aberrometer, which could affect the preoperative evaluation and results of refractive surgery, especially wavefront-guided approaches. Chalazion excision could reduce ocular aberrations and is recommended before refractive surgeries.

Eye Research Center, Khatam-al-Anbia Hospital, Mashhad University of Medical Sciences, Mashhad, Iran.

Reprints: Mojtaba Abrishami, Eye Research Center, Khatam-al-Anbia Hospital, Mashhad University of Medical Sciences, Abutaleb Cross, Qarani Boulevard, Mashhad 91959-61151, Iran (e-mail:

The authors declare that there is no conflict of interest.

Received November 6, 2011

Accepted July 9, 2012

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