Evaluation of scleral-fixated intraocular lens position anomalies by anterior segment optical coherence tomography

Accidental intraocular lens (IOL) implantation into the corneal stroma is a rare clinical entity that can occur during the wound-assisted technique. In this report, we describe a case of an 81-year-old man who underwent cataract surgery in which the IOL was implanted into the corneal stroma with the wound-assisted technique, and we present changes in anterior segment optical coherence tomography. The IOL was removed and reinserted after widening the incision. Air tamponade was created by intracameral injection. An anterior chamber tap was performed 10 h later to reduce increased intraocular pressure. Interlayer separation of the corneal stroma was confirmed 30 min postoperatively but was corrected 4 days later. The patient’s best-corrected visual acuity (BCVA) was logMAR 0.30, and he had been diagnosed with age-related macular degeneration before surgery. Although the opacity of the corneal stroma persisted, BCVA improved to logMAR 0. When using the wound-assisted technique for IOL insertion, surgeons should take care not to implant the IOL into the corneal stroma.

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Anterior segment optical coherence tomography of intraocular lens opacification

Indian Journal of Ophthalmology ◽

10.4103/ijo.ijo_1172_17 ◽

2018 ◽

Vol 66 (6) ◽

pp. 858 ◽

Cited By ~ 4

Author(s):

Neha Goel ◽

Saurabh Choudhry ◽

Aanchal Mehta ◽

Nidhi Mahajan

Keyword(s):

Optical Coherence Tomography ◽

Intraocular Lens ◽

Anterior Segment ◽

Optical Coherence ◽

Lens Opacification ◽

Intraocular Lens Opacification

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Prediction of effective Lens position using anterior segment optical coherence tomography in Chinese subjects with angle closure

BMC Ophthalmology ◽

10.1186/s12886-021-02213-w ◽

2021 ◽

Vol 21 (1) ◽

Author(s):

Yuzhou Wu ◽

Shunhua Zhang ◽

Yong Zhong ◽

Ailing Bian ◽

Yang Zhang ◽

...

Keyword(s):

Optical Coherence Tomography ◽

Anterior Segment ◽

Anterior Chamber Depth ◽

Partial Coherence ◽

Angle Closure ◽

Optical Coherence ◽

Training Set ◽

Lens Position ◽

Regression Formula ◽

Validation Set

Abstract Purpose To assess the accuracy of biometric parameters measured by anterior segment optical coherence tomography (AS-OCT) and partial coherence interferometry (PCI) in prediction of effective lens position (ELP) compared with previous formulas in PACG patients. Methods 121 PACG eyes were randomly divided into training set (85 eyes) and validation set (36 eyes) with same procedure including AS-OCT, PCI, phacoemulsification and IOL implantation surgery. Preoperative anterior chamber depth (pre-ACD), scleral spur depth (SSD), scleral spur width (SSW), lens vault (LV) and cornea thickness (CT) were measured from AS-OCT image. Axial length (AL) and corneal power (K) were measured by PCI. All the 7 parameters were analyzed by multiple linear regression in training set and a statistic regression formula was developed. In validation set, one-way ANOVA was applied to compare the new regression formula with Sanders-Retzlaff-Kraff theoretic (SRK/T), Holladay 1, Haigis, and a regression formula developed in previous study. Results The coefficient of determination (R2) of different parameter combinations are 0.19 (pre-ACD, AL), 0.25 (AL, K) and 0.49 (SSD, AL, SSW) in training set. In validation set, the correlation between predicted and measured ELP are: new formula (R2 = 0.50, P = 0.9947) Holladay 1 (R2 = 0.12, P < 0.0001), SRK/T (R2 = 0.11, P < 0.0001) and Haigis (R2 = 0.06, P < 0.0001). Conclusion Among 7 tested parameters, pre-ACD contribute little in ELP prediction. Formula consist of SSD, AL and SSW showed better accuracy than other formulas tested.

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Prediction of Phakic Intraocular Lens Vault Using Machine Learning of Anterior Segment Optical Coherence Tomography Metrics

American Journal of Ophthalmology ◽

10.1016/j.ajo.2021.02.006 ◽

2021 ◽

Vol 226 ◽

pp. 90-99

Author(s):

Kazutaka Kamiya ◽

Ik Hee Ryu ◽

Tae Keun Yoo ◽

Jung Sub Kim ◽

In Sik Lee ◽

...

Keyword(s):

Machine Learning ◽

Optical Coherence Tomography ◽

Intraocular Lens ◽

Anterior Segment ◽

Optical Coherence ◽

Phakic Intraocular Lens ◽

Lens Vault

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Spontaneous Scleral Perforation of an Anterior Chamber Intraocular Lens

Case Reports in Ophthalmology ◽

10.1159/000445880 ◽

2016 ◽

Vol 7 (1) ◽

pp. 249-252

Author(s):

Oriel Spierer ◽

Terrence P. O’Brien

Keyword(s):

Optical Coherence Tomography ◽

Anterior Chamber ◽

Intraocular Lens ◽

Anterior Segment ◽

Optical Coherence ◽

Chamber Length ◽

Good Visual Acuity ◽

Vertically Aligned ◽

Eye Examination ◽

The Right

A routine eye examination of a 69-year-old man revealed a scleral perforation of one of the haptics of the anterior chamber intraocular lens (AC IOL) which had been implanted many years ago. The patient was asymptomatic with good visual acuity. His history was negative for any trauma, eye rubbing, topical corticosteroid use, or autoimmune disease. The horizontal and vertical white-to-white diameters of the cornea in the right eye were 11.5 and 10.5 mm, respectively. Anterior segment optical coherence tomography showed the anterior chamber length to be 12.28 mm horizontally and 10.63 mm vertically. The patient underwent an IOL exchange, and the length of the explanted AC IOL was measured to be 12 mm. We speculate that the AC IOL, which was vertically aligned, was oversized. This case demonstrates the need for proper sizing and positioning of an AC IOL. In complex cases where AC IOL may be used, measuring the horizontal and vertical lengths of the anterior chamber by anterior segment optical coherence tomography prior to surgery may be useful.

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