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Keratophakia--postoperative astigmatism
C A Swinger1, R C Troutman, J S Forman
1Department of Ophthalmology, Beth Israel Medical Center, New York, New York.
Cornea
|January 1, 1987
Summary
Primary keratophakia surgery significantly induced astigmatism (1.55 D), unlike secondary procedures (0.19 D). Both methods, however, showed a tendency to cause against-the-rule and irregular astigmatism post-surgery.
Area of Science:
- Ophthalmology
- Refractive Surgery
Background:
- Keratophakia, a refractive surgical procedure, involves corneal tissue transplantation.
- Understanding postoperative astigmatism is crucial for evaluating surgical outcomes.
Purpose of the Study:
- To analyze and compare surgically induced astigmatism after primary and secondary keratophakia.
- To identify tendencies for specific types of astigmatism following these procedures.
Main Methods:
- Retrospective analysis of 49 primary and 13 secondary keratophakia cases.
- Measurement and comparison of postoperative astigmatism.
Main Results:
- Primary keratophakia induced an average of 1.55 D of astigmatism.
- Secondary keratophakia induced insignificant astigmatism (0.19 D).
- Both procedures demonstrated a propensity to induce against-the-rule and irregular astigmatism.
Conclusions:
- Primary keratophakia is associated with significant surgically induced astigmatism.
- Secondary keratophakia has minimal impact on induced astigmatism.
- Both keratophakia types can lead to against-the-rule and irregular astigmatism, requiring careful consideration.