Long-term Efficacy of the Baerveldt 250 mm2 Compared with the Baerveldt 350 mm2 Implant

Allan, Evan; Khaimi, Mahmoud A.; Jones, Justin S.; Ding, Kai; Skuta, Gregory L.

doi:10.1016/j.ophtha.2014.09.002

Cited by 34 publications

(21 citation statements)

References 42 publications

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“…The paper by Seah et al, 12 which retrospectively compared the 250 mm 2 with the 350 mm 2 Baerveldt implants in Asian eyes, and the paper by Allan et al, 11 which compared these implants in the United States, were similar to our study results and found no significant difference in mean IOP levels between the 350 mm 2 and the smaller implants. Both these studies and our study contained a mixed group of diagnoses, including primary glaucomas, secondary glaucomas, and neovascular glaucoma.…”

Section: Discussionsupporting

confidence: 87%

“…Both these studies and our study contained a mixed group of diagnoses, including primary glaucomas, secondary glaucomas, and neovascular glaucoma. 1112 After adjusting for gender, preoperative IOP, and length of follow-up, Seah et al 12 found that as well as increasing age, the number of previous operations performed before implant surgery positively correlated with failure. In our study, patients with prior glaucoma surgeries (trabeculectomies and glaucoma drainage implant surgeries) were excluded.…”

Section: Discussionmentioning

confidence: 99%

“…An early retrospective study by Smith et al 10 comparing double-plate Molteno implants (270 mm 2 surface area) with Baerveldt 350 mm 2 implants showed no significant differences in IOP control or success rate. A larger, recent comparative case study done by Allan et al 11 found no difference in surgical failure rate or the visual acuity (VA), mean IOP, and the number of glaucoma medications being taken at the final follow-up visit between Baerveldt implants of 250 and 350 mm 2 surface areas. An earlier comparative trial performed by Seah et al 12 also found no significant difference between the Baerveldt 250 and 350 mm 2 in success rate (maintaining an IOP between 6 and 21 mm Hg), complication rate, IOP, VA, and the number of medications at the final visit.…”

Section: Introductionmentioning

confidence: 96%

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Retrospective Comparison of Intermediate-term Efficacy of 350 mm2 Glaucoma Drainage Implants and Medium-sized 230—250 mm2 Implants

Meyer

Rodgers

Zou

et al. 2017

Journal of Current Glaucoma Practice

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AimTo compare the intermediate-term efficacy of a large surface area Baerveldt 350 mm2 glaucoma drainage device (GDD) with medium surface area implants (Baerveldt 250 mm2 and Molteno 3, 230, or 245 mm2).DesignThis is a retrospective, nonrandomized comparative trial.Materials and methodsA total of 94 eyes of 94 patients of mixed glaucoma diagnoses without any prior glaucoma surgical procedures and who had undergone a glaucoma drainage implant surgery with either a large Baerveldt 350 mm2 GDD or a medium-sized GDD (Baerveldt 250 mm2 or Molteno 230 or 245 mm2) were reviewed for intraocular pressure (IOP), number of glaucoma medications, and visual acuity (VA) preoperatively, and at 1, 2, and 3 years postprocedure.ResultsNo significant differences were found in mean IOP, number of glaucoma medications used, and VA at 1, 2, and 3 years postoperatively. The rate of additional glaucoma procedures was similar between the two groups.ConclusionThere is no clear evidence that a larger implant surface area beyond 230 to 250 mm2 is advantageous in providing intermediate-term IOP control.Clinical significanceIt may be technically easier to surgically place a GDD that does not need to have its wings placed underneath the recti muscles, and the IOP results are similar.How to cite this articleMeyer AM, Rodgers CD, Zou B, Rosenberg NC, Webel AD, Sherwood MB. Retrospective Comparison of Intermediate-term Efficacy of 350 mm2 Glaucoma Drainage Implants and Medium-sized 230-250 mm2 Implants. J Curr Glaucoma Pract 2017;11(1):8-15.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 96%

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Retrospective Comparison of Intermediate-term Efficacy of 350 mm2 Glaucoma Drainage Implants and Medium-sized 230—250 mm2 Implants

Meyer

Rodgers

Zou

et al. 2017

Journal of Current Glaucoma Practice

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“…A 2003 study by Seah et al 7 reported that there were no statistically significant differences in success rate, complication rate, final IOP, visual acuity (VA), and number of medications between the 350 and 350 mm 2 implant groups in Asian eyes at a mean follow-up of 33.4 months. Similarly, in 2015, Allan et al 8 found no significant differences between the two implant sizes at a mean follow-up of 40 months.…”

Section: Introductionmentioning

confidence: 90%

Relationship between Glaucoma Drainage Device Size and Intraocular Pressure Control: Does Size Matter?

Rodgers

Meyer

Sherwood

2017

Journal of Current Glaucoma Practice

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There is ambiguity in the literature regarding whether a larger glaucoma drainage device (GDD) achieves a lower long-term intraocular pressure (IOP). There is some evidence on both sides, but overall there seems to be an optimal surface area of approximately 200-250 mm2 beyond which there may be little advantage to increasing the plate size for most patients.How to cite this articleRodgers CD, Meyer AM, Sherwood MB. Relationship between Glaucoma Drainage Device Size and Intraocular Pressure Control: Does Size Matter? J Curr Glaucoma Pract 2017;11(1):1-2.

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“…This sequence was first described for the Molteno device and was addressed by a complete intraoperative tube ligation to prevent aqueous from negatively impacting the bleb maturation [25] . More recent studies of these devices do not describe a significant hypertensive phase [9,[26][27][28] . Aqueous humor of patients with glaucoma contains a high concentration of tissue growth factor b (TGF-b ), which has a substantial regulatory effect on the extracellular matrix macromolecules and synthesis of matrix protein as well as an inhibitory effect on degradative proteolytic enzymes [15] .…”

Section: Discussionmentioning

confidence: 99%

Impact of same-session trabectome surgery on Ahmed glaucoma valve outcomes

Esfandiari

Shazly

Shah

et al. 2018

Graefes Arch Clin Exp Ophthalmol

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Purpose: To evaluate the efficacy and survival rates of same session ab interno trabeculectomy with the trabectome and Ahmed glaucoma valve implant (AT) in comparison to the Ahmed glaucoma valve alone (A).Method : A total of 107 eyes undergoing primary glaucoma surgery were enrolled in this retrospective comparative case series, including 48 eyes which underwent AT and 59 eyes which received A alone . Participants were identified using the procedural terminology codes, and their medical records were reviewed. The primary outcome measure was surgical success, defined as intraocular pressure (IOP) > 5 mmHg, ≤ 21 mmHg, and IOP reduction ≥ 20% from baseline at two consecutive visits after three months, no reoperation for glaucoma. Secondary outcome measures were IOP, the number of glaucoma medications, incidence of a hypertensive phase, and best corrected visual acuity (BCVA). Results:The cumulative probability of success at one year was 70% in AT, and 65% in A (p=0.85). IOP decreased significantly from 26.6 ± 10.1 mmHg at baseline to 14.7 ± 3.3 mmHg at the final follow-up in AT (p= 0.001). The corresponding numbers for A were 28.8 ± 10.2 and 16.7 ± 4.9, respectively (p= 0.001). The final IOP was significantly lower in AT (p= 0.022). The number of medications at baseline was comparable in both groups (2.6 ± 1.2 in AT and 2.5 ± 1.3 in A, p=0.851). Corresponding number at 1 year visit was 1.2±2 in AT and 2.8±1.8 in A (p=0.001).The incidence of a hypertensive phase was 18.7% in AT and 35.5% in A (p=0.05). HP resolved in only 30% of eyes. The criteria for HP resolution were fulfilled in 9 eyes (30%). There was no difference in the rate of resolution of the hypertensive phase between AT and A (33.3% and 28.5%, respectively, p=0.67).Conclusion : Ahmed glaucoma valve implant with same session trabectome surgery significantly decreased the rate of the hypertensive phase and postoperative IOP as well as the number of glaucoma medications.

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Long-term Efficacy of the Baerveldt 250 mm2 Compared with the Baerveldt 350 mm2 Implant

Cited by 34 publications

References 42 publications

Retrospective Comparison of Intermediate-term Efficacy of 350 mm2 Glaucoma Drainage Implants and Medium-sized 230—250 mm2 Implants

Retrospective Comparison of Intermediate-term Efficacy of 350 mm2 Glaucoma Drainage Implants and Medium-sized 230—250 mm2 Implants

Relationship between Glaucoma Drainage Device Size and Intraocular Pressure Control: Does Size Matter?

Impact of same-session trabectome surgery on Ahmed glaucoma valve outcomes

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