scholarly journals Sub-1 Millimeter—700 Micron Cataract Surgery

2011 ◽  
Vol 04 (02) ◽  
pp. 92
Author(s):  
Dhivya Ashok Kumar ◽  
Amar Agarwal ◽  
◽  
Keyword(s):  
Wound Healing ◽  
Optical Coherence Tomography ◽  
Cataract Surgery ◽  
Healing Process ◽  
Anterior Segment ◽  
Corneal Incision ◽  
Clear Corneal Incision ◽  
Corneal Wound ◽  
Work Done ◽  
Early Wound

We have reviewed the surgical technique, advantages, and limitations of sub-1 mm–700 micron cataract surgery or ‘microphakonit.’ The small clear corneal incision is made with the 0.8 mm microphakonit knife and the instruments, such as the phacoemulsification needle, irrigating chopper, and bimanual irrigation aspiration set, are made with a 0.7 mm diameter. We have also reviewed some of the work done by the authors in 700 micron cataract surgery and our analysis of microphakonit wound architecture has been explained. The clear corneal wound architecture in microphakonit has been evaluated with anterior segment optical coherence tomography and the healing process has been assessed. The microphakonit has proven to have early wound healing and less post-operative astigmatism as compared with the wound with extension.

scholarly journals Changes in ocular astigmatism after superotemporal versus temporal clear corneal incision cataract surgery

2021 ◽  
Author(s):  
Qi Fan ◽  
Dongjin Qian ◽  
Zhennan Zhao ◽  
Yongxiang Jiang ◽  
Yi Lu
Keyword(s):  
Cataract Surgery ◽  
Anterior Segment ◽  
Corneal Astigmatism ◽  
Corneal Incision ◽  
Clear Corneal Incision ◽  
Ocular Residual Astigmatism ◽  
Age Related ◽  
Postoperative Astigmatism ◽  
Manifest Refraction ◽  
Uncorrected Visual Acuity

Abstract Background The incision site to choose to manage postoperative astigmatism during cataract surgery is still debated. This study investigated corneal and internal astigmatism changes after superotemporal versus temporal clear corneal incision cataract surgery. Methods Patients included were diagnosed between December 2019 and January 2020 with age-related cataract with corneal astigmatism < 1.5 diopters (D) and were divided into two groups: Right Eye Group (R Group, superotemporal incision) and Left Eye Group (L Group, temporal incision). Uncorrected visual acuity, manifest refraction, corneal topography, anterior segment optical coherence tomography were performed pre- and 6 months postoperatively. Total ocular astigmatism, corneal astigmatism, surgically induced corneal astigmatism (SICA), non-corneal ocular residual astigmatism (N-CORA), postoperative intraocular lens (IOL) decentration, and tilt were analysed. Results Thirty-eight subjects were included: 21, R Group; 17, L Group. After surgery, the N-CORA decreased significantly from 1.17 ± 0.72D to 0.73 ± 0.47D in all patients (P = 0.001), 1.03 ± 0.52D to 0.70 ± 0.40D in the R Group (P = 0.005), and 1.35 ± 0.90D to 0.78 ± 0.55D in the L Group (P = 0.033). Significant differences between the R and L groups were found in the postoperative meridian of anterior corneal astigmatism (75.95 ± 52.50 vs 116.79 ± 47.29; P = 0.017), total corneal astigmatism (51.65 ± 42.75 vs 95.20 ± 57.32; P = 0.011), J45 change vector of SICA in the anterior cornea (-0.10 ± 0.18 vs 0.00 ± 0.11; P = 0.048), and total cornea surface (-0.14 ± 0.17 vs 0.03 ± 0.12; P = 0.001). IOL decentration, tilt, and the meridian of IOL tilt were not significantly correlated with N-CORA. Conclusions The N-CORA significantly decreased after cataract surgery. Superotemporal and temporal incisions can cause differences in the meridian components of oblique astigmatism but will not have a significant effect on the magnitude of corneal astigmatism.

scholarly journals Change of Optical Intensity during Healing Process of Corneal Wound on Anterior Segment Optical Coherence Tomography

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Kangkeng Zheng ◽  
Haifan Huang ◽  
Kun Peng ◽  
Jianhao Cai ◽  
Vishal Jhanji ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Healing Process ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Optical Intensity ◽  
Corneal Wound

Wound Healing Process After Corneal Stromal Thinning Observed With Anterior Segment Optical Coherence Tomography

Cornea ◽  
2014 ◽  
Vol 33 (10) ◽  
pp. 1056-1060 ◽  
Author(s):  
Tsugiaki Utsunomiya ◽  
Kazuomi Hanada ◽  
Osamu Muramatsu ◽  
Akihiro Ishibazawa ◽  
Noriko Nishikawa ◽  
...  
Keyword(s):  
Wound Healing ◽  
Optical Coherence Tomography ◽  
Healing Process ◽  
Anterior Segment ◽  
Wound Healing Process ◽  
Optical Coherence

Reply: Optical coherence tomography studies of clear corneal incision wound architecture

2011 ◽  
Vol 37 (7) ◽  
pp. 1375-1376
Author(s):  
İzzet Can ◽  
Hasan Ali Bayhan ◽  
Hale Çelik ◽  
Başak Bostancı Ceran
Keyword(s):  
Optical Coherence Tomography ◽  
Optical Coherence ◽  
Corneal Incision ◽  
Clear Corneal Incision ◽  
Incision Wound

Thrombocytopenia and Clear Corneal Incision Cataract Surgery

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Grace R. Reilly ◽  
Caroline W. Tipton ◽  
Karen R. Armbrust ◽  
Kelly Boyd ◽  
Jared J. Murray ◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Corneal Incision ◽  
Clear Corneal Incision

scholarly journals Small Incision Cataract Surgery (SICS) with Clear Corneal Incision and SICS with Scleral Incision – A Comparative Study

2014 ◽  
Vol 2 (1) ◽  
pp. 22-27
Author(s):  
Md Shafiqul Alam ◽  
Khaleda Nazneen Bari
Keyword(s):  
Visual Acuity ◽  
Cataract Surgery ◽  
Visual Outcome ◽  
Small Incision Cataract Surgery ◽  
Corneal Incision ◽  
Clear Corneal Incision ◽  
Age Related ◽  
Postoperative Astigmatism ◽  
Group A ◽  
Group B

Background: Age related cataract is the leading cause of blindness and visual impairment throughout the world. With the advent of microsurgical facilities simple cataract extraction surgery has been replaced by small incision cataract surgery (SICS) with posterior chamber intra ocular lens implant, which can be done either with clear corneal incision or scleral incision. Objective: To compare the post operative visual outcome in these two procedures of cataract surgery. Materials and method: This comparative study was carried out in the department of Ophthalmology, Delta Medical College & Hospital, Dhaka, Bangladesh, during the period of January 2010 to December 2012. Total 60 subjects indicated for age related cataract surgery irrespective of sex with the age range of 40-80 years with predefined inclusion and exclusion criteria were enrolled in the study. Subjects were randomly and equally distributed in 2 groups; Group A for SICS with clear corneal incision and group B for SICS with scleral incision. Post operative visual out come was evaluated by determining visual acuity and astigmatism in different occasions and was compared between groups. Statistical analysis was done by SPSS for windows version12. Results: The highest age incidence (43.3%) was found between 61 to 70 years of age group. Among study subjects 40 were male and 20 were female. Preoperative visual acuity and astigmatism were evenly distributed between groups. Regarding postoperative unaided visual outcome, 6/12 or better visual acuity was found in 19.98% cases in group A and 39.6% cases in group B at 1st week. At 6th week 6/6 vision was found in 36.3% in Group A and 56.1% in Group B and 46.2% in group A and 66% in group B without and with correction respectively. With refractive correction, 6/6 vision was attained in 60% subjects of group A and 86.67% of group B at 8th week. Post operative visual acuity was statistically significant in all occasions. Postoperative astigmatism of >0.50D was in 82.5% subjects of group A and 52.8% subjects of group B at 1st week. At 6th week postoperative astigmatism of less than 1D was in 79.95% subjects of Group A and 83.34% subjects of Group B. About 20% subjects in Group A and only 3.3% in Group B showed astigmatism of more than 1D and these differences on both the occasions were statistically significant. Conclusion: The post operative visual outcome was better in SICS with scleral incision (group B) than in SICS with clear corneal incision (Group-A). DOI: http://dx.doi.org/10.3329/dmcj.v2i1.17793 Delta Med Col J. Jan 2014; 2(1): 22-27

Impact of Cataract Surgery on Filtering Bleb Morphology Identified Via Swept-source 3-dimensional Anterior Segment Optical Coherence Tomography

2019 ◽  
Vol 28 (5) ◽  
pp. 433-439
Author(s):  
Akiko Narita ◽  
Yuki Morizane ◽  
Tomoe Miyake ◽  
Kae Sugihara ◽  
Tomoko Ishikawa ◽  
...  
Keyword(s):  
Optical Coherence Tomography ◽  
Cataract Surgery ◽  
Anterior Segment ◽  
Optical Coherence ◽  
Swept Source ◽  
3 Dimensional ◽  
Filtering Bleb

Epithelial downgrowth after Descemet membrane endothelial keratoplasty

2020 ◽  
pp. 112067212091241
Author(s):  
Viet Nhat Hung Le ◽  
Florian Wabnig ◽  
Bjoern Bachmann ◽  
Claus Cursiefen
Keyword(s):  
Anterior Segment ◽  
Corneal Edema ◽  
Endothelial Keratoplasty ◽  
Descemet Membrane Endothelial Keratoplasty ◽  
Visual Axis ◽  
Corneal Incision ◽  
Descemet Membrane ◽  
Clear Corneal Incision ◽  
Close Observation ◽  
Histopathologic Evaluation

Purpose: To describe a patient with epithelial downgrowth after Descemet membrane endothelial keratoplasty. Methods: Case report. Results: A 73-year-old woman underwent triple Descemet stripping automated endothelial keratoplasty for cataract and corneal edema secondary to Fuchs endothelial dystrophy in the left eye elsewhere. Three years later, Descemet membrane endothelial keratoplasty was performed at our department due to graft failure. One month after the operation, her vision improved to 20/32 and maintained stable. At the 14-month visit, her visual acuity decreased, and a routine examination revealed epithelial downgrowth at the posterior surface of the cornea and partly beneath the graft, accompanied by presumed graft rejection. Therefore, repeat Descemet membrane endothelial keratoplasty with epithelial scraping and intracameral injection of 5-fluorouracil was indicated. She recovered 20/25 vision by 1 month after the surgery. However, small sheet-like epithelial downgrowth recurred 1 month later. The epithelial downgrowth was limited to the peripheral margin of the Descemet membrane endothelial keratoplasty graft and did not affect the visual axis. Epithelial downgrowth showed “islands” with connection between epithelial downgrowth and clear corneal incision on anterior segment optical coherence tomography images. Histopathologic evaluation of the removed Descemet membrane endothelial keratoplasty graft confirmed conjunctival epithelium as the source. Under close observation at the current 4-year follow-up, the epithelial downgrowth remained stable and localized and her vision increased to 20/20. Conclusion: Epithelial downgrowth can occur after Descemet membrane endothelial keratoplasty. The limited progression of epithelial downgrowth in this patient suggests that this condition after Descemet membrane endothelial keratoplasty even in the recurrence stage may cause less damage than expected and may only need to be observed closely if no progression occurs.

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