Surgically Induced Astigmatism Following Glaucoma Surgery in Egyptian Patients

El-Saied, Heba Magdy Ahmed; Foad, Pakinam H.; Eldaly, Mohamed A.; Abdelhakim, Mohamad Amr Salah Eddin

doi:10.1097/ijg.0000000000000035

Cited by 23 publications

(22 citation statements)

References 3 publications

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“…[13][14][15] Some authors suggested an ATR, whereas others found a WTR astigmatic shift following filtering surgery. More importantly, this shift appears to be consistently transient.…”

Section: Discussionmentioning

confidence: 97%

Trabeculectomy With Moorfields Conjunctival Closure Technique Offers Safety Without Astigmatism Induction

Willekens

Pinto²,

Delbeke³

et al. 2016

Journal of Glaucoma

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“…[13][14][15] Some authors suggested an ATR, whereas others found a WTR astigmatic shift following filtering surgery. More importantly, this shift appears to be consistently transient.…”

Section: Discussionmentioning

confidence: 97%

Trabeculectomy With Moorfields Conjunctival Closure Technique Offers Safety Without Astigmatism Induction

Willekens

Pinto²,

Delbeke³

et al. 2016

Journal of Glaucoma

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“…Few reports have compared the SIA among different glaucoma surgeries 7 , 8 or between modified techniques of the same glaucoma surgery. 5 In the current study, the SIA magnitude in the LEC group did not differ markedly from the SIA values obtained from the previously reported vector analysis at 1–6 months after LEC.…”

Section: Discussionmentioning

confidence: 99%

Comparison of surgically induced astigmatism following different glaucoma operations

Tanito¹,

Matsuzaki²,

Ikeda³

et al. 2017

OPTH

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AimTo compare surgically induced astigmatism (SIA) among glaucomatous eyes treated with trabeculectomy (LEC), EX-PRESS® shunt (EXP), ab externo trabeculotomy (exLOT), or microhook ab interno trabeculotomy (μLOT).Subjects and methodsEighty right eyes of 80 subjects who underwent LEC (n=20), EXP (n=20), exLOT (n=20), or μLOT (n=20) were included. The dataset including the best-corrected visual acuity (BCVA), intraocular pressure (IOP), and keratometry recordings preoperatively and 3 months postoperatively was collected by chart review. The means of the vector magnitude, vector meridian, and arithmetic magnitude of the preoperative and postoperative astigmatism and SIA were calculated. The correlations among the SIA magnitude, postoperative BCVA, and IOP were assessed.ResultsThe mean astigmatic arithmetic magnitudes did not differ significantly (P=0.0732) preoperatively among the four groups, but the magnitude was significantly (P=0.0002) greater in the LEC group than the other groups postoperatively. The mean SIA vectors were calculated to be 1.01 D at 56°, 0.62 D at 74°, 0.23 D at 112°, and 0.12 D at 97° for the LEC, EXP, exLOT, and μLOT groups, respectively. The mean SIA arithmetic magnitudes were significantly (P<0.0001) greater in the LEC group than the other groups. Three months postoperatively, the SIA magnitude was correlated positively with the logarithm of the minimum angle of resolution (logMAR) BCVA (r=0.3538) and negatively with the IOP (r=−0.3265); the logMAR BCVA was correlated negatively with the IOP (r=−0.3105).ConclusionEXP, exLOT, and μLOT induce less corneal astigmatism than LEC in the early postoperative period.

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“…Figure shows the trends of post‐operative changes of induced WTR astigmatism based on the combined results of various studies . WTR astigmatism demonstrated a continuous descending trend during a one‐year follow‐up after trabeculectomy, while most of this reduction has occurred during the first month after the surgery.…”

Section: Keratometric Changesmentioning

confidence: 99%

Post‐trabeculectomy ocular biometric changes

Pakravan

Alvani

Esfandiari

et al. 2017

Clinical and Experimental Optometry

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Trabeculectomy is the most common surgical procedure for the management of glaucoma, which may significantly influence ocular biometry. Axial length and anterior chamber depth tend to decrease, while crystalline lens and choroidal thickness increase post-operatively. An increase in with-the-rule astigmatism is also observed after the procedure. Such biometric changes affect intraocular lens power calculation even years after the procedure. Non-contact biometric methods and postponing cataract surgery after trabeculectomy could reduce calculation errors associated with surgically induced alterations in ocular biometrics.

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Surgically Induced Astigmatism Following Glaucoma Surgery in Egyptian Patients

Abstract: Both trabeculectomy and deep sclerectomy induced considerable postoperative astigmatism. A longer follow-up period is recommended to study the different patterns of astigmatism in either procedure.

Cited by 23 publications

References 3 publications

Trabeculectomy With Moorfields Conjunctival Closure Technique Offers Safety Without Astigmatism Induction

Trabeculectomy With Moorfields Conjunctival Closure Technique Offers Safety Without Astigmatism Induction

Comparison of surgically induced astigmatism following different glaucoma operations

Post‐trabeculectomy ocular biometric changes

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