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Research Paper | Ophthalmology | India | Volume 12 Issue 3, March 2023
Changes in Keratometry Pre and Post Pterygium Excison Surgery
Dr. Anuja Gadgil | Dr. Kiran Bhirud | Dr. N. S. Arvikar [2]
Abstract: Purpose: To study the change in keratometry post pterygium excision surgery in pterygium patients. Materials and Method: A prospective study of 50 patients of primary pterygium was done. Pre operative assessment was done for all patients which included best corrected visual acuity, refractive error, keratometry values (KH & KV), evaluation and grading of pterygium & detailed ocular and posterior segment examination. All patients underwent surgery for pterygium excision. Post-surgery patients were evaluated on day 30th for best corrected visual acuity, refractive error, keratometry values. P values were determined for change in keratometry readings. Results: The mean pre-op K1 value was significantly lesser compared to mean post-op K1 value as per Student t-test (38.79?2.88 D vs. 43.51?1.48 D; p<0.05). The mean pre-op K2 value was significantly more compared to mean post-op K2 value as per Student t-test (45.61?2.90 D vs. 44.55?1.45 D; p<0.05. Conclusion: Pterygium is a wing shaped degenerative encroachment of subconjunctival tissue over cornea. It particularly causes flattening of horizontal meridian (K1) which can lead to false decrease in K1 values. This can lead to astigmatism and error in IOL power calculation for cataract surgery in such patients. Pterygium excision surgery rectifies this error bringing the keratometry values within normal limits.
Keywords: keratometry, K1, K2, excision, pre-op, post-op
Edition: Volume 12 Issue 3, March 2023,
Pages: 515 - 518