African Health Sciences
Makerere University Medical School
Vol. 18, No. 4, 2018, pp. 1010-1017
Bioline Code: hs18125
Full paper language: English
Document type: Study
Document available free of charge
African Health Sciences, Vol. 18, No. 4, 2018, pp. 1010-1017
© Copyright 2018 - Inan et al.
PASCAL laser platform produces less pain responses compared to conventional laser system during the panretinal photocoagulation: a randomized clinical trial|
Inan, Sibel; Polat, Onur; Yıgıt, Safiye & Inan, Umit Ubeyt
Background: Most of patients experience pain during the panretinal photocoagulation(PRP). Laser photocoagulation delivery
has advanced with the introduction of pattern-scanning laser systems (PASCAL). Shorter pulse duration and less choroidal penetration believed to reduce pain during the laser treatment.
Objectives: To compare the severity of expressed pain scores in patients with PDR who underwent PRP either with PASCAL
laser or conventional laser.
Methods: A total of 28 patients with a diagnosis of PDR who were scheduled for bilateral PRP therapy were enrolled into the
prospective study. Both eyes were treated within the same session and while one eye was treated with PASCAL the other was
treated with conventional laser randomly. Pulse duration was adjusted to 100-ms in conventional laser and 30 ms in PASCAL.
The severity of pain was graded using a verbal scale and a visual analog scale (VAS).
Results: Mean age was 61.36±9.10 years. Mean verbal and VAS scores were 1.32±0.47 and 2.86±1.21 in the PASCAL laser and
2.39±0.49 and 5.75±1.35 in the conventional laser group, respectively. Differences between expressed pain scores obtained by
both two scales were statistically significant (p<0.001).
Conclusion: PASCAL laser significantly alleviates pain levels possibly due to the shorter laser pulse duration and lower intensity.
Panretinal photocoagulation; PASCAL; pain.