|Articles|February 22, 2006

Surgical crossroads: what to do after tube-shunt failure

Glaucoma implants may fail for a number of reasons, said Felix Gil Carrasco, MD, at the World Congress of Ophthalmology on Wednesday. However, inappropriate patient selection and improper placement of the shunt are probably the most common reasons.

Don’t miss out—get Ophthalmology Times updates on the latest clinical advancements and expert interviews, straight to your inbox.

Subscribe Now!

Latest CME

Video

(CME Credit) Time Matters in GA: The Impact of Early Detection and Proactive Treatment Approaches

Laxmi V. Devisetty, MD; Rodney P. Coe, MD, MS; Majda Hadziahmetovic, MD; Xiao Yi (Ellie) Zhou, MD

In-Person Event

20th Annual Controversies in Modern Eye Care

April 19, 2026

Video

(CME Track) Clinical Consultations™: Framing a New Approach to Geographic Atrophy Management – Expert Insights into Recent Developments

Yasha Modi, MD; Carolyn Majcher, OD, FAAO, FORS

Video

(COPE Track) Clinical Consultations™: Framing a New Approach to Geographic Atrophy Management – Expert Insights into Recent Developments

Yasha Modi, MD; Carolyn Majcher, OD, FAAO, FORS

Video

(CME Track) Rapid Reviews in Retina™: Emerging Updates from Winter 2025 – Addressing the Wealth of New Data in Treatments for nAMD and DME

David M. Brown, MD, FACS; Dilraj S. Grewal, MD

Video

(COPE Track) Rapid Reviews in Retina™: Emerging Updates from Winter 2025 – Addressing the Wealth of New Data in Treatments for nAMD and DME

David M. Brown, MD, FACS; Dilraj S. Grewal, MD

Video

Living With X-Linked Retinitis Pigmentosa: What We Can Learn From a Patient’s Experience

Lejla Vajzovic, MD, FASRS; Ramiro Maldonado, MD

Video

(CME Track) Collaborative Community Connections™: Mastering the Management of nAMD and DME Through Therapeutic Innovation

Veeral Sheth, MD, MBA, FASRS, FACS; Mark R. Barakat, MD, FASRS; Geeta Lalwani, MD; Xiao Yi Zhou, MD

Video

Living With X-Linked Retinitis Pigmentosa: What We Can Learn From a Patient’s Experience

Lejla Vajzovic, MD, FASRS; Ramiro Maldonado, MD

Video

(COPE Track) Collaborative Community Connections™: Mastering the Management of nAMD and DME Through Therapeutic Innovation

Veeral Sheth, MD, MBA, FASRS, FACS; Mark R. Barakat, MD, FASRS; Geeta Lalwani, MD; Xiao Yi Zhou, MD

Video

Navigating the Glaucoma Therapeutic and Surgical Landscape: From Conventional to Cutting-Edge

Deborah Ristvedt, DO; Melissa Tawa, OD, FAAO

Video

(CME Track) Neurotrophic Keratitis: Multidisciplinary Approaches to Enhance Patient Outcomes

Melissa Barnett, OD, FAAO, FSLS, FBCLA; Cecelia Koetting, OD, FAAO, DipABO; Quan Đông Nguyễn, MD, MSc; Jennifer Li, MD

Video

(COPE Track) Neurotrophic Keratitis: Multidisciplinary Approaches to Enhance Patient Outcomes

Melissa Barnett, OD, FAAO, FSLS, FBCLA; Cecelia Koetting, OD, FAAO, DipABO; Quan Đông Nguyễn, MD, MSc; Jennifer Li, MD

Video

(CME Track) The Neural Network: Exploring The Role of Neuromodulation in Dry Eye Disease Management

Marjan Farid, MD; John Hovanesian, MD; Beeran Meghpara, MD

Video

(COPE Track) The Neural Network: Exploring The Role of Neuromodulation in Dry Eye Disease Management

Marjan Farid, MD; John Hovanesian, MD; Beeran Meghpara, MD

Video

(CME Track) Toric IOLs Unleashed: From Technological Progress to Patient Success

Tanner Ferguson, MD; Taj Nasser, MD, FWCRS

Video

(CME Track) Clinical Case Connections: Expert Insights on Applying Therapeutic Innovations in nAMD

Nathan C. Steinle, MD

Video

(CME Track) Clinical Case Connections: Understanding the Impact of Advances in Treatment for DME and DR

David A. Eichenbaum, MD

Video

(COPE Track) Toric IOLs Unleashed: From Technological Progress to Patient Success

Tanner Ferguson, MD; Taj Nasser, MD, FWCRS

Video

(COPE Track) Clinical Case Connections: Expert Insights on Applying Therapeutic Innovations in nAMD

Nathan C. Steinle, MD

Video

(COPE Track) Clinical Case Connections: Understanding the Impact of Advances in Treatment for DME and DR

David A. Eichenbaum, MD

Video

(CME Credit) Navigating Pharmacological Presbyopia Treatment for Enhanced Patient Care

Jacob Lang, OD, FAAO; Selina R. McGee, OD, FAAO; Neda Shamie, MD

Video

Neurotrophic Keratitis Insights: An Interactive Corneal Sensitivity Testing Workshop

John D. Gelles, OD, FAAO, FIAOMC, FCLSA, FSLS, FBCLA; John Hovanesian, MD, FACS

Video

(COPE Credit) Navigating Pharmacological Presbyopia Treatment for Enhanced Patient Care

Jacob Lang, OD, FAAO; Selina R. McGee, OD, FAAO; Neda Shamie, MD

Video

(COPE Track) Small Mites, Big Impact: Revolutionizing Demodex Blepharitis Care

Arjan Hura, MD; Neda Shamie, MD; Kristin Barnes, OD

Video

(CME Track) Small Mites, Big Impact: Revolutionizing Demodex Blepharitis Care

Arjan Hura, MD; Neda Shamie, MD; Kristin Barnes, OD

Video

Rapid Reviews in Retina™: Emerging Updates from Spring 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

SriniVas Sadda, MD, FARVO; Nathan Steinle, MD

Video

Interventional Dry Eye: A Stepwise Treatment & Management Approach

Mark Schaeffer, OD, FAAO; Mile Brujic, OD, FAAO; Nate Lighthizer, OD, FAAO, FAAOMS; Selina R. McGee, OD, FAAO

Video

(CME Track) Rapid Reviews in Retina™: Emerging Updates from Summer 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

Mark R. Barakat, MD, FASRS; David Eichenbaum, MD, FASRS

Video

(CME Track) Collaborating Across the Continuum™: Best Practices in Patient-Centric Team Management of XLRP

Ramiro Maldonado, MD; Rebecca Nelson, MS, CGC; Robert A. Sisk, MD, FACS, FASRS

Video

(CME Track) Community Collaborative Connections™: Optimizing the Collaborative Care of Neovascular Retinal Disease in a New Age of Treatment

Dilsher Dhoot, MD, FASRS; Jordana G. Fein, MD, MS; Deep Parikh, MD; Xiao-Yi (Ellie) Zhou, MD

Video

(CME Track) The Evolution of MacTel Management: Integrating Neuroprotective Therapies Into Clinical Practice

Dante Pieramici, MD, FASRS; Dean Eliott, MD; Robin A. Vora, MD; Charles C. Wykoff, MD, PhD, FASRS

Video

(CME Track) A Forward Look at Anti-VEGF Therapies: A Paradigm Shift in Neovascular Retinal Disease Management

David Almeida, MD, PhD, MBA; Margaret A. Chang, MD, MS; Arshad M. Khanani, MD, MA, FASRS; Jessica Randolph, MD

Video

Navigating Advances in Neovascular Retinal Disease: Translating Evidence to Practice in AMD, DME, and RVO

SriniVas R. Sadda, MD, FARVO; Mark R. Barakat, MD, FASRS; David A. Eichenbaum, MD, FASRS

In-Person Event

Interventional Glaucoma: The Convergence of Surgical Innovation and Therapeutic Hope

October 24, 2025

Video

(COPE) Optimizing Management of Ocular Toxicity in Cancer Patients: The Role of Ophthalmologists in the Spectrum of Care

Asim V. Farooq, MD; Joann Kang, MD; Nita Lee, MD, MPH

Multimedia

Community Practice Connections™: Transforming Treatment in nAMD, DME, and DR – Keeping an Eye on Optimal Outcomes

David A. Eichenbaum, MD; Roger A. Goldberg, MD, MBA; Priya Vakharia, MD; Geeta Lalwani, MD

Video

(CME) Optimizing Management of Ocular Toxicity in Cancer Patients: The Role of Ophthalmologists in the Spectrum of Care

Asim V. Farooq, MD; Joann Kang, MD; Nita Lee, MD, MPH

Multimedia

Expert Perspectives on Technological Advances in Cataract Surgery

Elizabeth Yeu, MD; Ashley Behrens, MD; Jade Coats, OD

Multimedia

Expanding Treatment Options for Demodex Blepharitis: Patient-Centric Approaches to Therapy

Jade Coats, OD, FAAO; Angela Y. Zhu, MD

Multimedia

Expanding Treatment Options for Demodex Blepharitis: Patient-Centric Approaches to Therapy

Jade Coats, OD, FAAO; Angela Y. Zhu, MD

Multimedia

(CME Credit) Community Practice Connections™: Applying Advances in Neovascular Retinal Disease - Expanding Treatment Intervals & Enhancing Outcomes

Arshad M. Khanani, MD, MA, FASRS; Carl J. Danzig, MD, FASRS; Jennifer I. Lim, MD, FARVO

Multimedia

Interventional Glaucoma Treatment: Evolving Paradigms for Addressing Unmet Needs

Deborah Ristvedt, DO; Melissa Tawa, OD, FAAO

Multimedia

Burst CME™ Part 3: Initiating Early Intervention in Patients With Glaucoma Who Fail Pharmacological Therapy

Deborah Ristvedt, DO; Melissa Tawa, OD, FAAO

Multimedia

(CME Track) Burst CME™ Part 1: Insights Into Glaucoma and the Need for Early Intervention

Deborah Ristvedt, DO; Melissa Tawa, OD, FAAO

Multimedia

Interventional Glaucoma Treatment: Evolving Paradigms for Addressing Unmet Needs

Deborah Ristvedt, DO; Melissa Tawa, OD, FAAO

Multimedia

(COPE Credit) Community Practice Connections™: Applying Advances in Neovascular Retinal Disease - Expanding Treatment Intervals & Enhancing Outcomes

Arshad M. Khanani, MD, MA, FASRS; Carl J. Danzig, MD, FASRS; Jennifer I. Lim, MD, FARVO

Multimedia

(CME Track) Neurotrophic Keratitis in Focus – From Early Recognition to Strategic Intervention

Jacqueline Theis, OD, FAAO; Cecelia Koetting, OD, FAAO, DipABO; Melissa Barnett, OD, FAAO, FSLS, FBCLA

Multimedia

(COPE Track) Neurotrophic Keratitis in Focus – From Early Recognition to Strategic Intervention

Jacqueline Theis, OD, FAAO; Cecelia Koetting, OD, FAAO, DipABO; Melissa Barnett, OD, FAAO, FSLS, FBCLA

Multimedia

(COPE Track) Leveraging Rho Kinase Inhibition in Glaucoma Management — How Can Novel Treatment Pathways Impact Patient Outcomes?

Mitch Ibach, OD, FAAO; Jessica Steen, OD, FAAO

Multimedia

(CME Track) Leveraging Rho Kinase Inhibition in Glaucoma Management — How Can Novel Treatment Pathways Impact Patient Outcomes?

Mitch Ibach, OD, FAAO; Jessica Steen, OD, FAAO

Video

Rapid Reviews in Retina™: Emerging Updates from Fall 2024 - Addressing the Wealth of New Data in Treatments for nAMD and DME

Diana V. Do, MD; Michael W. Stewart, MD; Paolo Lanzetta, MD; Dilraj Grewal, MD

In-Person Event

EnVision Summit

February 13-16, 2026

Video

(CME Track) Revolutionizing nAMD and DME Management: Collaborative Strategies in the Age of Durable Treatments

David S. Liao, MD, PhD; Chang Sup Lee, MD; Douglas Matsunaga, MD; Daniel Su, MD

Video

(CME Track) The TED Perspective: A Multidisciplinary Approach to Thyroid Eye Care

Sara T. Wester, MD, FACS; Cecelia Koetting, OD; Sophie Liao, MD; Jennifer Murdock, MD

Video

Practical Approaches to Modern Dry Eye Treatment and Management

Marc R. Bloomenstein, OD, FAAO; Cory J. Lappin, OD, MS, FAAO; Selina R. McGee, OD, FAAO

Multimedia

(CME Track) Expanding Horizons in Toric IOLs: Translating Technological Advances Into Improved Patient Outcomes

Rahul Tonk, MD, MBA

Video

(CME Track) Patient-Centered Treatment Strategies in the Management of nAMD and DME

Adrienne W. Scott, MD, FASRS; Justine Cheng, MD; Hong-Uyen Hua, MD; Sherrol A. Reynolds OD, FAAO, FNAP

$(CME Track) The Neural Frontier: Mapping Neurostimulation Across the DED Patient Spectrum for Refractive Surgery$

Video

(CME Track) The Neural Frontier: Mapping Neurostimulation Across the DED Patient Spectrum for Refractive Surgery

Zeba A. Syed, MD

Video

(CME Track) Visionary Approaches: Rethinking Therapeutic and Interventional Glaucoma Management

Rachel Simpson, MD; James Murphy, MD; Mary Qiu, MD; Jessica Steen, OD, FAAO

Video

(COPE Credit) Time Matters in GA: The Impact of Early Detection and Proactive Treatment Approaches

Laxmi V. Devisetty, MD; Rodney P. Coe, MD, MS; Majda Hadziahmetovic, MD; Xiao Yi (Ellie) Zhou, MD

Video

(COPE Track) Revolutionizing nAMD and DME Management: Collaborative Strategies in the Age of Durable Treatments

David S. Liao, MD, PhD; Chang Sup Lee, MD; Douglas Matsunaga, MD; Daniel Su, MD

Video

(COPE Track) Visionary Approaches: Rethinking Therapeutic and Interventional Glaucoma Management

Rachel Simpson, MD; James Murphy, MD; Mary Qiu, MD; Jessica Steen, OD, FAAO

$(COPE Track) The Neural Frontier: Mapping Neurostimulation Across the DED Patient Spectrum for Refractive Surgery$

Video

(COPE Track) The Neural Frontier: Mapping Neurostimulation Across the DED Patient Spectrum for Refractive Surgery

Zeba A. Syed, MD

Multimedia

(COPE Track) Expanding Horizons in Toric IOLs: Translating Technological Advances Into Improved Patient Outcomes

Rahul Tonk, MD, MBA

Video

(COPE Track) The TED Perspective: A Multidisciplinary Approach to Thyroid Eye Care

Sara T. Wester, MD, FACS; Cecelia Koetting, OD; Sophie Liao, MD; Jennifer Murdock, MD

Video

(COPE Track) Patient-Centered Treatment Strategies in the Management of nAMD and DME

Adrienne W. Scott, MD, FASRS; Justine Cheng, MD; Hong-Uyen Hua, MD; Sherrol A. Reynolds OD, FAAO, FNAP

Virtual Event

Collaborative Care Symposium

May 2-3, 2026

Surgical crossroads: what to do after tube-shunt failure

Newsletter

Related Content

AAO 2025: Early optogenetic therapy shows promise for patients with inherited retinal diseases

Throwback Series: Identifying and treating neovascular lesions in pregnancy

Starting from scratch on neovascular age-related macular degeneration

Q&A: Insights from Rajesh K. Rajpal, MD, on an incision-free keratoconus therapy

Dompé's NAION program selected for FDA Commissioner’s National Priority Voucher Program

Latest CME

(CME Credit) Time Matters in GA: The Impact of Early Detection and Proactive Treatment Approaches

20th Annual Controversies in Modern Eye Care

(CME Track) Clinical Consultations™: Framing a New Approach to Geographic Atrophy Management – Expert Insights into Recent Developments

(COPE Track) Clinical Consultations™: Framing a New Approach to Geographic Atrophy Management – Expert Insights into Recent Developments

(CME Track) Rapid Reviews in Retina™: Emerging Updates from Winter 2025 – Addressing the Wealth of New Data in Treatments for nAMD and DME

(COPE Track) Rapid Reviews in Retina™: Emerging Updates from Winter 2025 – Addressing the Wealth of New Data in Treatments for nAMD and DME

Living With X-Linked Retinitis Pigmentosa: What We Can Learn From a Patient’s Experience

(CME Track) Collaborative Community Connections™: Mastering the Management of nAMD and DME Through Therapeutic Innovation

Living With X-Linked Retinitis Pigmentosa: What We Can Learn From a Patient’s Experience

(COPE Track) Collaborative Community Connections™: Mastering the Management of nAMD and DME Through Therapeutic Innovation

Navigating the Glaucoma Therapeutic and Surgical Landscape: From Conventional to Cutting-Edge

(CME Track) Neurotrophic Keratitis: Multidisciplinary Approaches to Enhance Patient Outcomes

(COPE Track) Neurotrophic Keratitis: Multidisciplinary Approaches to Enhance Patient Outcomes

(CME Track) The Neural Network: Exploring The Role of Neuromodulation in Dry Eye Disease Management

(COPE Track) The Neural Network: Exploring The Role of Neuromodulation in Dry Eye Disease Management

(CME Track) Toric IOLs Unleashed: From Technological Progress to Patient Success

(CME Track) Clinical Case Connections: Expert Insights on Applying Therapeutic Innovations in nAMD

(CME Track) Clinical Case Connections: Understanding the Impact of Advances in Treatment for DME and DR

(COPE Track) Toric IOLs Unleashed: From Technological Progress to Patient Success

(COPE Track) Clinical Case Connections: Expert Insights on Applying Therapeutic Innovations in nAMD

(COPE Track) Clinical Case Connections: Understanding the Impact of Advances in Treatment for DME and DR

(CME Credit) Navigating Pharmacological Presbyopia Treatment for Enhanced Patient Care

Neurotrophic Keratitis Insights: An Interactive Corneal Sensitivity Testing Workshop

(COPE Credit) Navigating Pharmacological Presbyopia Treatment for Enhanced Patient Care

(COPE Track) Small Mites, Big Impact: Revolutionizing Demodex Blepharitis Care

(CME Track) Small Mites, Big Impact: Revolutionizing Demodex Blepharitis Care

Rapid Reviews in Retina™: Emerging Updates from Spring 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

Interventional Dry Eye: A Stepwise Treatment & Management Approach

(CME Track) Rapid Reviews in Retina™: Emerging Updates from Summer 2025—Addressing the Wealth of New Data in Treatments for Neovascular Retinal Disease

(CME Track) Collaborating Across the Continuum™: Best Practices in Patient-Centric Team Management of XLRP

(CME Track) Community Collaborative Connections™: Optimizing the Collaborative Care of Neovascular Retinal Disease in a New Age of Treatment

(CME Track) The Evolution of MacTel Management: Integrating Neuroprotective Therapies Into Clinical Practice

(CME Track) A Forward Look at Anti-VEGF Therapies: A Paradigm Shift in Neovascular Retinal Disease Management

Navigating Advances in Neovascular Retinal Disease: Translating Evidence to Practice in AMD, DME, and RVO

Interventional Glaucoma: The Convergence of Surgical Innovation and Therapeutic Hope

(COPE) Optimizing Management of Ocular Toxicity in Cancer Patients: The Role of Ophthalmologists in the Spectrum of Care

Community Practice Connections™: Transforming Treatment in nAMD, DME, and DR – Keeping an Eye on Optimal Outcomes

(CME) Optimizing Management of Ocular Toxicity in Cancer Patients: The Role of Ophthalmologists in the Spectrum of Care

Expert Perspectives on Technological Advances in Cataract Surgery

Expanding Treatment Options for Demodex Blepharitis: Patient-Centric Approaches to Therapy

Expanding Treatment Options for Demodex Blepharitis: Patient-Centric Approaches to Therapy

(CME Credit) Community Practice Connections™: Applying Advances in Neovascular Retinal Disease - Expanding Treatment Intervals & Enhancing Outcomes

Interventional Glaucoma Treatment: Evolving Paradigms for Addressing Unmet Needs

Burst CME™ Part 3: Initiating Early Intervention in Patients With Glaucoma Who Fail Pharmacological Therapy

(CME Track) Burst CME™ Part 1: Insights Into Glaucoma and the Need for Early Intervention

Interventional Glaucoma Treatment: Evolving Paradigms for Addressing Unmet Needs

(COPE Credit) Community Practice Connections™: Applying Advances in Neovascular Retinal Disease - Expanding Treatment Intervals & Enhancing Outcomes

(CME Track) Neurotrophic Keratitis in Focus – From Early Recognition to Strategic Intervention

(COPE Track) Neurotrophic Keratitis in Focus – From Early Recognition to Strategic Intervention

(COPE Track) Leveraging Rho Kinase Inhibition in Glaucoma Management — How Can Novel Treatment Pathways Impact Patient Outcomes?

(CME Track) Leveraging Rho Kinase Inhibition in Glaucoma Management — How Can Novel Treatment Pathways Impact Patient Outcomes?

Rapid Reviews in Retina™: Emerging Updates from Fall 2024 - Addressing the Wealth of New Data in Treatments for nAMD and DME

EnVision Summit

(CME Track) Revolutionizing nAMD and DME Management: Collaborative Strategies in the Age of Durable Treatments

(CME Track) The TED Perspective: A Multidisciplinary Approach to Thyroid Eye Care

Practical Approaches to Modern Dry Eye Treatment and Management

(CME Track) Expanding Horizons in Toric IOLs: Translating Technological Advances Into Improved Patient Outcomes

(CME Track) Patient-Centered Treatment Strategies in the Management of nAMD and DME

(CME Track) The Neural Frontier: Mapping Neurostimulation Across the DED Patient Spectrum for Refractive Surgery

(CME Track) Visionary Approaches: Rethinking Therapeutic and Interventional Glaucoma Management

(COPE Credit) Time Matters in GA: The Impact of Early Detection and Proactive Treatment Approaches

(COPE Track) Revolutionizing nAMD and DME Management: Collaborative Strategies in the Age of Durable Treatments

(COPE Track) Visionary Approaches: Rethinking Therapeutic and Interventional Glaucoma Management

(COPE Track) The Neural Frontier: Mapping Neurostimulation Across the DED Patient Spectrum for Refractive Surgery

(COPE Track) Expanding Horizons in Toric IOLs: Translating Technological Advances Into Improved Patient Outcomes

(COPE Track) The TED Perspective: A Multidisciplinary Approach to Thyroid Eye Care

(COPE Track) Patient-Centered Treatment Strategies in the Management of nAMD and DME

Collaborative Care Symposium

Trending on Ophthalmology Times - Clinical Insights for Eye Specialists

Starting from scratch on neovascular age-related macular degeneration

Q&A: Insights from Rajesh K. Rajpal, MD, on an incision-free keratoconus therapy