Journal List > J Korean Ophthalmol Soc > v.57(5) > 1010579

Kim, Ryu, Kim, and Kim: The Result of Photorefractive Keratectomy Treated with 0.1% Fluorometholone and Tranilast Eye Drops

Abstract

Purpose

To determine the effectiveness of the method for preventing corneal opacity and minimizing the intraocular pressure (IOP) increase after photorefractive keratectomy treated with 0.1% fluorometholone and tranilast (0.5% tranilast, Krix®, JW pharmaceutical, Seoul, Korea), especially in cases with elevated IOP.

Methods

The patients who underwent photorefractive keratectomy from May 2014 to May 2015 were enrolled in the present study. The data of 49 patients (49 eyes) with elevated IOP at 1 month postoperatively and who used 0.1% fluorometholone and tranilast eye drops (tranilast group) were analyzed and compared with the control group consisting of patients who underwent the same surgery from December 2012 to October 2013 but used only 0.1% fluorometholone.

Results

The visual acuity at postoperative 6 months was log MAR -0.08 ± 0.05 and log MAR -0.08 ± 0.04 in the tranilast group and control group, respectively. The eye drops were used postoperatively for 17.7 ± 3.3 weeks in the tranilast group and for 20.5 ± 3.7 weeks in the control group (p < 0.01). Anti-glaucoma eye drops were used for 18.4 ± 3.2 weeks and 20.9 ± 3.7 weeks postoperatively in the tranilast group and control group, respectively (p < 0.01).

Conclusions

Adding tranilast eye drops to patients whose IOP was elevated because of 0.1% fluorometholone use after photorefractive keratectomy is an effective method for preventing corneal haze and minimizing IOP elevation.

References

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Table 1.
The comparison of general characteristics between the tranilast group and control group
Characteristics Tranilast group Control group p-value
Number of patients 49 71  
Age (years) 26.0 ± 4.9 27.2 ± 4.9 0.19
Gender (male, %) 20 (41%) 21 (30%) 0.20
Preoperative myopia (diopters) -5.32 ± 1.61 -4.95 ± 1.61 0.21
Preoperative astigmatism (diopters) -1.42 ± 0.96 -1.14 ± 0.93 0.12
Preoperative BCVA (log MAR) -0.02 ± 0.05 -0.01 ± 0.04 0.27
Preoperative IOP (mm Hg) 15.6 ± 2.7 15.2 ± 3.1 0.49
Preoperative CCT (μm) 533.8 ± 27.6 524.8 ± 32.0 0.11

Values are presented as mean ± SD unless otherwise indicated.

BCVA = best corrected visual acuity; IOP = intraocular pressure; CCT = central cornea thickness.

Table 2.
Postoperative visual acuity, period of fluorometholone and anti-glaucoma eye drop use after photorefractive keratectomy in the two groups
  Tranilast group Control group p-value
UCVA at postoperative 6 months (log MAR) -0.08 ± 0.05 -0.08 ± 0.04 0.27
IOP at postoperative 6 months (mm Hg) 10.2 ± 1.7 10.1 ± 2.3 0.76
Period of use of fluorometholone (weeks) 17.7 ± 3.3 20.5 ± 3.7 <0.01
Period of use of anti glaucoma eyedrop (weeks) 18.4 ± 3.2 20.9 ± 3.7 <0.01
Period of use of tranilast (weeks) 19.2 ± 3.1 -

Values are presented as mean ± SD unless otherwise indicated.

UCVA = uncorrected visual acuity; IOP = intraocular pressure.

Table 3.
Corneal clarity based on Fantes grading system at postoperative 6 months after photorefractive keratectomy
Grading Cornea status Number of patients (%)
Tranilast group (49 eyes) Control group (71 eyes)
0 Totally clear 40 (82) 58 (82)
0.5 Trace 9 (18) 13 (18)
1 Minimal haze 0 (0) 0 (0)
2 Mild haze 0 (0) 0 (0)
3 Moderate dense opacity 0 (0) 0 (0)
4 Severe dense opacity 0 (0) 0 (0)

Values are presented as n (%).

Table 4.
Analysis regarding the number of anti-glaucoma eye drops used to manage postoperative intraocular pressure (IOP) in the two groups
Anti-glaucoma eye drops Number of patients (%)
Tranilast group (49 eyes) Control group (71 eyes)
Timolol 0.5% only 14 (28) 10 (14)
DTFC/BTFC only 34 (70) 55 (77)
DTFC/BTFC + Brimonidine 0.15% 1 (2) 4 (6)
DTFC/BTFC + Brimonidine 0.15% + acetazolamide 0 (0) 2 (3)

Values are presented as n (%).

DTFC/BTFC = one of dorzolamide-timolol fixed combination (DTFC) or brinzolamide-timolol fixed combination (BTFC).

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