PapersFlow Research Brief
Corneal Surgery and Treatments
Research Guide
What is Corneal Surgery and Treatments?
Corneal surgery and treatments encompass surgical and therapeutic interventions aimed at repairing, regenerating, or replacing damaged corneal tissue, including procedures such as corneal collagen crosslinking, keratoprosthesis implantation, and stem cell-based therapies for conditions like keratoconus and ocular surface disorders.
Research in corneal surgery and treatments centers on advances in corneal tissue engineering and regeneration, utilizing limbal stem cells, amniotic membrane, and stem cell therapy for corneal reconstruction. Key areas include corneal neovascularization management, epithelial cell transplantation, wound healing processes, and the Boston Keratoprosthesis application. The field comprises 44,879 published works.
Topic Hierarchy
Research Sub-Topics
Limbal Stem Cell Transplantation
This sub-topic examines the transplantation of limbal stem cells for treating limbal stem cell deficiency and restoring corneal epithelium. Researchers study clinical outcomes, cell sourcing, and long-term efficacy in ocular surface reconstruction.
Corneal Collagen Crosslinking
This sub-topic focuses on riboflavin/UVA-induced crosslinking to strengthen corneal biomechanics in keratoconus and ectatic disorders. Researchers investigate protocols, complications, and comparative effectiveness with other interventions.
Amniotic Membrane Transplantation
This sub-topic explores the use of amniotic membrane as a graft for promoting corneal wound healing and anti-inflammation. Researchers analyze biological properties, surgical techniques, and applications in persistent epithelial defects.
Corneal Neovascularization Therapies
This sub-topic covers anti-angiogenic treatments and surgical interventions to regress pathological corneal blood vessel growth. Researchers study molecular mechanisms, VEGF inhibitors, and impacts on graft survival.
Boston Keratoprosthesis Implantation
This sub-topic investigates outcomes, complications, and innovations in Boston type I and II keratoprosthesis for high-risk corneal blindness. Researchers evaluate retention rates, infection prophylaxis, and patient selection criteria.
Why It Matters
Corneal surgery and treatments address critical vision impairments from conditions like keratoconus and corneal ectasia, where Wollensak et al. (2003) demonstrated that riboflavin/ultraviolet-A–induced collagen crosslinking halts progressive corneal thinning and protrusion, preserving visual function in affected patients. Sorkin and Varssano (2014) systematically reviewed this crosslinking method for treating keratoconus and post-LASIK ectasia, confirming its efficacy in stabilizing corneal structure and reducing the need for penetrating keratoplasty. Gain et al. (2015) revealed a global shortage with only 1 cornea available for 70 needed, underscoring the role of these treatments in bridging tissue scarcity through bioengineering alternatives and reducing reliance on transplants.
Reading Guide
Where to Start
"Riboflavin/ultraviolet-a–induced collagen crosslinking for the treatment of keratoconus" by Wollensak et al. (2003), as it provides the foundational description of a widely used procedure for stabilizing progressive corneal ectasia with 2881 citations.
Key Papers Explained
Wollensak et al. (2003) introduced riboflavin/ultraviolet-A crosslinking as a treatment for keratoconus, which Sorkin and Varssano (2014) expanded through systematic review confirming its role in ectatic disorders. Rabinowitz (1998) and Krachmer et al. (1984) established the clinical definitions and characteristics of keratoconus and related thinning disorders, framing the need for such interventions. Gain et al. (2015) contextualized these advancements against global transplant shortages.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current efforts emphasize corneal tissue engineering with limbal stem cells and amniotic membrane for regeneration, alongside stem cell therapy and epithelial transplantation to address neovascularization and wound healing challenges. Research continues on keratocyte phenotype preservation and Boston Keratoprosthesis refinements for ocular surface disorders.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | National Institutes of Health Consensus Development Project on... | 2014 | Biology of Blood and M... | 5.2K | ✓ |
| 2 | Wound Healing--Aiming for Perfect Skin Regeneration | 1997 | Science | 4.7K | ✕ |
| 3 | National Institutes of Health Consensus Development Project on... | 2005 | Biology of Blood and M... | 3.5K | ✕ |
| 4 | Riboflavin/ultraviolet-a–induced collagen crosslinking for the... | 2003 | American Journal of Op... | 2.9K | ✕ |
| 5 | Keratoconus | 1998 | Survey of Ophthalmology | 2.7K | ✕ |
| 6 | Label-retaining cells reside in the bulge area of pilosebaceou... | 1990 | Cell | 2.3K | ✕ |
| 7 | Corneal collagen crosslinking: a systematic review. | 2014 | PubMed | 1.8K | ✕ |
| 8 | TFOS DEWS II pathophysiology report | 2017 | The Ocular Surface | 1.6K | ✕ |
| 9 | Global Survey of Corneal Transplantation and Eye Banking | 2015 | JAMA Ophthalmology | 1.6K | ✓ |
| 10 | Keratoconus and related noninflammatory corneal thinning disor... | 1984 | Survey of Ophthalmology | 1.6K | ✕ |
Frequently Asked Questions
What is corneal collagen crosslinking?
Corneal collagen crosslinking uses riboflavin and ultraviolet-A light to strengthen corneal collagen bonds and halt keratoconus progression. Wollensak et al. (2003) first reported its application in treating keratoconus by inducing corneal stiffening. Sorkin and Varssano (2014) confirmed its effectiveness in systematic reviews for keratoconus and post-LASIK ectasia.
How does keratoconus affect the cornea?
Keratoconus causes progressive corneal thinning, protrusion, irregular astigmatism, and visual deterioration. Rabinowitz (1998) described it as a noninflammatory disorder leading to corneal ectasia. Krachmer et al. (1984) outlined its relation to other thinning disorders requiring surgical intervention.
What is the global status of corneal transplantation?
A worldwide shortage exists with only 1 cornea available for every 70 needed for transplantation. Gain et al. (2015) quantified this disparity in their global survey of eye banking. The findings emphasize the need for alternative treatments like tissue engineering.
What role does wound healing play in corneal treatments?
Wound healing involves proliferation, migration, matrix synthesis, and contraction by various cell types in corneal repair. Martin (1997) detailed these phases in skin regeneration, applicable to corneal surface reconstruction. This process supports therapies like epithelial cell transplantation.
What are key methods in corneal regeneration?
Methods include limbal stem cell therapy, amniotic membrane use, and epithelial cell transplantation for ocular surface disorders. Studies focus on corneal neovascularization control and keratocyte phenotype modulation. The Boston Keratoprosthesis serves as a prosthetic alternative for severe cases.
Open Research Questions
- ? How can stem cell therapies optimize limbal stem cell integration for long-term corneal epithelial stability?
- ? What factors influence the success rate of Boston Keratoprosthesis in patients with repeated graft failures?
- ? Which biomaterials best mimic native corneal stroma for tissue-engineered grafts?
- ? How do variations in ultraviolet-A dosage affect collagen crosslinking outcomes in diverse corneal thicknesses?
- ? What mechanisms underlie persistent neovascularization post-corneal transplantation?
Recent Trends
The field maintains 44,879 works on corneal regeneration and tissue engineering, with no growth rate specified over 5 years.
High-impact papers like Sorkin and Varssano on crosslinking reviews sustain focus on ectatic disorder treatments.
2014Persistent global corneal graft shortages, as quantified by Gain et al. at 1:70 availability ratio, drive alternatives like bioengineered corneas.
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