Related Experiment Videos
Refractive variation and donor tissue size in aphakic keratoplasty. A prospective randomized study
Archives of Ophthalmology (Chicago, Ill. : 1960)
|August 1, 1979
Summary
This study found no significant difference in refractive error after keratoplasty when using same-sized or larger donor tissue. However, larger donor grafts may help reduce high refractive error and intraocular pressure.
Area of Science:
- Ophthalmology
- Surgical Techniques
- Corneal Transplantation
Background:
- Aphakic keratoplasty and combined lens extraction require precise donor-recipient tissue matching.
- Trephine size is a critical factor influencing graft success and visual outcomes.
Purpose of the Study:
- To compare refractive outcomes and intraocular pressure following keratoplasty using same-sized versus larger donor trephines.
- To evaluate the impact of donor graft size on refractive error and intraocular pressure in specific ophthalmic surgeries.
Main Methods:
- A prospective, randomized clinical study involving 46 patients.
- Comparison of same-sized donor and recipient trephines versus a 0.5-mm larger donor trephine.
- Procedures included aphakic keratoplasty and keratoplasty with lens extraction.
Main Results:
- No statistically significant differences were observed in spherical equivalents or astigmatism between the two groups.
- A trend suggested that larger donor tissue might reduce high plus-refractive error.
- Potential benefits of larger donor tissue in reducing post-operative intraocular pressure were noted.
Conclusions:
- Donor trephine size does not significantly impact refractive error in aphakic keratoplasty or combined procedures.
- Larger donor grafts may offer advantages in managing specific refractive errors and post-operative intraocular pressure.