Comparison of intraocular lens power calculation in simultaneous and sequential pterygium and cataract surgery

Joshi, Rajesh Subhash; Pendke, Sudhir Sudhakar; Marewar, Shobha

doi:10.22336/rjo.2021.31

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…Joshi et al 16 assessed IOL power in combined and sequential pterygium and cataract surgery, they found that the postoperative K values and IOL power were significantly higher than the preoperative values, while no significant change was detected in the axial length. Additionally, the astigmatism of the cornea was dramatically lowered from 2.43±2.0 preoperatively to 1.25±1.0 postoperatively.…”

Section: Discussionmentioning

confidence: 99%

Corneal Astigmatism and Intraocular Lens Power Calculation before and after Pterygium Surgery

Ghazaly

Hasan²,

hasaan³

2022

Al-Azhar International Medical Journal

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Background: Pterygium can interfere with vision by causing corneal astigmatism or by directly encroaching on the visual axis. Pterygium excision surgery, which employs multiple approaches, can lessen corneal astigmatism. Aim of The Work:To evaluate astigmatism of the cornea and to calculate intraocular lens (IOL) power before and after pterygium surgery in patient with coexistent cataract and primary pterygium. Patients and Methods: This study was a clinical trial which carried out on 20 patients of both gender. All patients had cataract and primary pterygium and undergo pterygium excision operation. All patients undergo preoperative and postoperative IOL power calculation by IOL master 500 and assessed stigmatism of the cornea by the Pentacam HR. Results: In our study, we found that there was no statistically significant difference in K1 in pre and post operative assessment. Also our study illustrated that there was highly statistically significant difference in K2 in pre and post-operative assessment. As regarding IOL power calculation, there was highly statistically significant difference between pre and post-operative assessment by IOL master. Conclusion: Pterygium excision using the conjunctival autografting technique is associated with postoperative increased keratometric readings and decreased corneal astigmatism. Stable corneal and refractive parameters are achieved one month postoperatively. Consequently, intraocular lens power calculation and cataract surgery should be postponed for at least one month post pterygium surgery in patients suffering from pterygium and cataract.

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Section: Discussionmentioning

confidence: 99%

Corneal Astigmatism and Intraocular Lens Power Calculation before and after Pterygium Surgery

Ghazaly

Hasan²,

hasaan³

2022

Al-Azhar International Medical Journal

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Section: Pterygiummentioning

confidence: 99%

“…Many studies have analyzed the effect of combined cataract and pterygium removal surgery [39,40,41 ▪ ,42,43]. Joshi and associates compared the postoperative refractive error in patients who had combined procedures with patients who had sequential procedures with pterygium excision prior to cataract surgery [41 ▪ ]. They concluded a small but statistically significant difference between the two groups, with the residual refractive error being 0.5±1.0 diopter in the combined group and 0.25±0.5 diopter in the sequential group [41 ▪ ].…”

Section: Pterygiummentioning

confidence: 99%

“…Joshi and associates compared the postoperative refractive error in patients who had combined procedures with patients who had sequential procedures with pterygium excision prior to cataract surgery [41 ▪ ]. They concluded a small but statistically significant difference between the two groups, with the residual refractive error being 0.5±1.0 diopter in the combined group and 0.25±0.5 diopter in the sequential group [41 ▪ ]. More importantly, several studies observed a significant myopic shift postoperatively after combined procedures, especially when pterygium was larger than 2 mm [41 ▪ ,42,43].…”

Section: Pterygiummentioning

confidence: 99%

“…They concluded a small but statistically significant difference between the two groups, with the residual refractive error being 0.5±1.0 diopter in the combined group and 0.25±0.5 diopter in the sequential group [41 ▪ ]. More importantly, several studies observed a significant myopic shift postoperatively after combined procedures, especially when pterygium was larger than 2 mm [41 ▪ ,42,43]. Other studies suggested decreasing the planned IOL power by 0.5 diopters in anticipation of the myopic shift [40,43].…”

Section: Pterygiummentioning

confidence: 99%

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Optimizing the ocular surface prior to cataract surgery

Huang

Jeng

2021

Current Opinion in Ophthalmology

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Purpose of reviewOcular surface disease can significantly impact the outcomes of cataract surgery. Recent studies have examined the efficacy of several new dry eye disease (DED) therapies, the extent to which epithelial debridement affects keratometric measurements in epithelial basement membrane dystrophy (EBMD) and Salzmann nodular degeneration (SND), and the predictability of refractive error following combined pterygium and cataract removal. This review aims to incorporate these newer studies in updating and further emphasizing the need for careful management and optimization of common ocular surface conditions prior to cataract surgery. Recent findingsCommon ocular surface conditions such as DED, EBMD, SND, and pterygium can cause significant irregular astigmatism and higher-order aberrations. Their resolution can substantially alter biometry measurements in preparation for cataract surgery, affecting the final visual outcome. Newer therapies for DED, such as topical lifitegrast and thermal pulsation treatment, can aid in this optimization process. If superficial keratectomy or excisions of lesions on the ocular surface are performed, sufficient healing time is needed to allow the ocular surface to reach stability prior to biometry measurements. SummaryOcular surface optimization is key to successful cataract surgery planning and reaching desired outcomes.

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