Journal List > J Korean Ophthalmol Soc > v.48(9) > 1007916

Hwang, Kim, and Kim: Comparison of Graft Rejection of First Eyes and Second Eyes after Bilateral Penetrating Keratoplasty

Abstract

Purpose

To compare graft rejection of the first and second eyes after bilateral penetrating keratoplasty.

Methods

We performed a retrospective review of the cases of 16 patients who underwent bilateral penetrating keratoplasty. Nonparametric Kaplan-Meier survival analysis was used to account for variable follow-up among patients.

Results

The mean age of the 16 patients (12 M, 4 F) was 39.1 years. Mean follow-up was 89.8 months after surgery in the first eye and 42.8 months after surgery in the second eye. The average time interval between surgery on the first and second eyes was 47.0 months. The indications for surgery were keratoconus (37.5%), corneal dystrophy (25.0%), pseudophakic bullous keratopathy (12.5%), band keratopathy (12.5%), and inflammatory corneal opacity (12.5%). Endothelial rejection occurred in five of the first eyes but was treated successfully, remaining clear until the last follow-up. Endothelial rejections were seen in five of the second eyes, two of which failed. Survival analysis of endothelial rejection showed no significant difference between the first and second eyes; however, survival analysis of the graft failure showed a decreased survival rate of the second eyes compared with that of the first eyes. The best corrected visual acuity at the last follow-up of the second eyes seemed to be worse than that of the first eyes.

Conclusions

Survival analysis of the endothelial rejections showed no significant difference between the first and second eyes. Survival analysis of the graft failure showed decreased survival rate of the second eyes. At the last follow-up the best corrected visual acuity of the second eyes appeared to be worse than that of the first eyes.

References

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Figure 1.
Kaplan-Meier survival analysis of the time from penetrating keratoplasty to the first endothelial rejection episode after bilateral penetrating keratoplasty. There was no significant difference between survival rate of the first eyes and that of the second eyes.
jkos-48-1189f1.tif
Figure 2.
Kaplan-Meier survival analysis of the time from penetrating keratoplasty to the first endothelial rejection episode in patients who underwent second surgery earlier than 2 years after first eye surgery. There was no significant difference between survival rate of the first eyes and that of the second eyes.
jkos-48-1189f2.tif
Figure 3.
Kaplan-Meier survival analysis of the time from penetrating keratoplasty to the first endothelial rejection episode in patients who underwent second surgery later than 2 years after first eye surgery. There was no significant difference between survival rate of the first eyes and that of the second eyes.
jkos-48-1189f3.tif
Figure 4.
Kaplan-Meier survival analysis curves of grafts in both eyes after bilateral penetrating keratoplasty. The survival rate of the second eyes decrease more rapidly than that of the first eyes.
jkos-48-1189f4.tif
Table 1.
Indications for bilateral penetrating keratoplasty
Indications for penetrating keratoplasty Number of patients (%)
Keratoconus 6 (37.5)
Corneal stromal dystrophy 4 (25.0)
Pseudophakic bullous keratopathy 2 (12.5)
Band keratopathy 2 (12.5)
Inflammatory corneal opacity 2 (12.5)
 Herpes keratitis 1 (6.25)
 Leukoma cornea adherence 1 (6.25)
Total 16 (100)
Table 2.
Pre-, intra-, and post-operative ocular status in patients undergoing bilateral penetrating keratoplasty
First eye No. of eyes (%) Second eye No. of eyes (%)
Ocular status
 Aphakia 0 (0) 0 (0)
 Pseudophakia 2 (12.5) 2 (12.5)
 Prior antiglaucoma surgery 1 (6.25) 1 (6.25)
Preoperative best-corrected visual acuity
 ≥0.5 0 (0) 0 (0)
 0.1-0.5 4 (25.0) 4 (25.0)
 <0.1 11 (68.75) 11 (68.75)
 Could not be assessed 1 (6.25) 1 (6.25)
Preoperative corneal stromal vascularity 4 (25.0) 3 (18.75)
Donor cornea
 Dome stic/Im ported 14/2 8/8
Additional surgical procedures
 IOL exchange 1 (6.25) 0 (0)

Due to mental retardation.

Test by binomial distribution for correlated proportions (p=1.0).

Table 3.
Graft rejection or graft failure of the first eye and second eye after bilateral keratoplasty
First eye No. of eyes (%) Second eye No. of eyes (%)
Graft rejection 5 (31.25) 5 (31.25)
Graft failure 1 (6.25) 3 (18.75)
 Immunologic 0 (0) 2 (12.5)
 Non immunologic 1 (6.25) 1 (6.25)

Due to Descemet's membrane detachment.

Due to lipid keratopathy.

Table 4.
Endothelial rejection during the first year alter surgery
Second eye First eye
Total
Rejection: Yes Rejection: No
Rejection: Yes 1 3 4
Rejection: No 1 6 7
  Total 2 9 11
Table 5.
Final visual outcomes in patients undergoing bilateral penetrating keratoplasty. The best-corrected visual acuity of the second eyes seemed to be worse than that of the first eyes
Best-corrected visual acuity First eye Second eye
First eye No. of eyes (%) Second eye No. of eyes (%)
≥0.5 7 (43.75) 3 (18.75)
0.1-0.5 7 (43.75) 8 (50.0)
<0.1 1(6.25) 4 (25.0)
Could not be assessed 1 (6.25) 1 (6.25)
Total 16 (100) 16 (100)

Test by binomial distribution for correlated proportions. (two-sided p=0.125)

Test by binomial distribution for correlated proportions. (two-sided p=0.375)

Due to mental retardation.

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