Conventional and Pattern Scanning Pan-Retinal Photocoagulation Laser in Diabetic Patients’ Visual Field Visual Field After Two Types of PRP
Journal of Lasers in Medical Sciences,
Vol. 13 (2022),
,
Page e40
Abstract
Introduction:In this study, we aimed to compare visual field defects in two different laser methods, namely conventional pan-retinal photocoagulation (PRP) and pattern scanning PRP, in patients with either proliferative diabetic or very severe non-proliferative diabetic retinopathy.
Methods:
This study was a randomized, single-blind, prospective clinical trial. Twenty patients with either proliferative or very severe non-proliferative diabetic retinopathy were enrolled in this study. Notably, only those patients with the same severity scores in both eyes were included. One eye underwent the conventional PRP laser and another eye underwent the pattern scanning PRP laser simultaneously. Swedish interactive threshold algorithms (SITA) standard perimetry was performed at baseline and one month after the treatment, and visual field defects were evaluated.
Results:
The pattern standard deviation (PSD) significantly increased in both the pattern and conventional PRP laser groups after one month. The change in PSD at baseline and after the treatment was not significant between the groups. The mean deviation (MD) level significantly decreased in the conventional group after one month. The change in the MD level at baseline and after the treatment was not significant between the pattern and conventional groups. The change in the mean best corrected visual acuity (BCVA) between the groups was not significant.
Conclusion:
Changes in visual acuity and visual fields of the patients between the pattern and conventional PRP laser methods showed no significant difference; however, the pattern PRP method caused a smaller reduction in overall sensitivity in the patient’s visual field.
Keywords:
- Diabetic retinopathy; Laser thermo-coagulation; Visual field
How to Cite
Hassanpoor, N., Ahoor, M., Latifi, A., & Niyousha, M. (2022). Conventional and Pattern Scanning Pan-Retinal Photocoagulation Laser in Diabetic Patients’ Visual Field: Visual Field After Two Types of PRP. Journal of Lasers in Medical Sciences, 13, e40. Retrieved from https://journals.sbmu.ac.ir/jlms/article/view/34707
References
1. Chhablani J, Roh YJ, Jobling AI, Fletcher E L, Lek J J, Bansal P, etal., Restorative retinal laser therapy: Present state and future directions. Surv Ophthalmol 2018; 63(3):307-328.
2. Lee DE, Lee JH, Lim HW, Kang MH, Cho HY, Seong M. The Effect of Pattern Scan Laser Photocoagulation on Peripapillary Retinal Nerve Fiber Layer Thickness and Optic Nerve Morphology in Diabetic Retinopathy. Korean J Ophthalmol 2014; 28(5):408-416.
3. Jennings PE, MacEwen CJ, Fallon TJ, Scott N, Haining WM, Belch J J. Oxidative effects of laser photocoagulation. Free Radic Biol Med 19 91; 11:327-30.
4. Stefansson E. Oxygen and diabetic eye disease. Graefes Arch Clin Exp Ophthalmol 1990; 228:120 -3.
5. Guyer DR, D’Amico DJ, Smith CW. Subretinal fibrosis after laser photocoagulation for diabetic macular edema. Am J Ophthalmol. 1992; 113:652-6.
6. Morgan CM, Schatz H. Atrophic creep of the retinal pigment epithelium after focal macular photocoagulation. Ophthalmology. 1989; 96:96e103.
7. Schatz H, Madeira D, McDonald HR, Johnson RN. Progressive enlargement of laser scars following grid laser photocoagulation for diffuse diabetic macular edema. Arch Ophthalmol. 1991; 109:1549e51.
8. Varley MP, Frank E, Purnell EW. Subretinal neovascularization after focal argon laser for diabetic macular edema. Ophthalmology 1988; 95:567e73 .
9. Shin JS, Lee YH. Changes in Macular Retinal Layers and Peripapillary Nerve Fiber Layer Thickness after 577-nm Pattern Scanning Laser in Patients with Diabetic Retinopathy. Korean J Ophthalmol 2017; 31(6):497-507.
10. Ozdek S, Lonneville YH, Onol M, Yetkin I, Hasanreisoğlu B B. Assessment of nerve fiber layer in diabetic patients with scanning laser polarimetry. Eye (Lond) 20 02;16:761-5 .
11. Jain A, Blumenkranz MS, Paulus Y, Wiltberger M W, Andersen D E, Huie P, et al., Effect of pulse duration on size and character of the lesion in retinal photocoagulation. Arch Ophthalmol2008; 126:78-85.
12. Sanghvi C, McLauchlan R, Delgado C, Young L, Charles S J, Marcellino G, et al., Initial experience with the Pascal photocoagulator: a pilot study of 75 procedures. Br J Ophthalmol20 08;92:1061- 4.
13. Fong DS, Girach A, Boney A. Visual side effects of successful scatter laser photocoagulation surgery for proliferative diabetic retinopathy: a literature review. Retina 2007; 27(7): 816–824.
14. Dowler JG. Laser management of diabetic retinopathy. J R Soc Med 2003; 96(6): 277–279.
15. I Yilmaz, I Perente. Changes in pupil size following panretinal retinal photocoagulation: conventional laservs pattern scan laser (PASCAL). Eye 2016; 30,1359–1364 .
16. Hande Çeliker, Azer Erdağı Bulut. Comparison of Efficacy and Side Effects of Multispot Lasers and Conventional Lasers for Diabetic Retinopathy Treatment. Turk J Ophthalmol 2017; 47:34-41.
17. Muqit MM, Marcellino GR.Optos-guided pattern scan laser (Pascal)-targeted retinal photocoagulation in proliferative diabetic retinopathy. Acta Ophthalmol. 2013; 91:251-258.
18. Nagpal M, Marlecha S, Nagpal K. Comparison of laser photocoagulation for diabetic retinopathy using 532-nm standard laser versus multispot pattern scan laser (PASCAL). Retina. 2010;30:452-458.
19. Muqit MM, Wakely L, Stanga PE, Henson DB, Ghanchi FD. Effects of conventional argon panretinal laser photocoagulation on retinal nerve fibre layer and driving visual fields in diabetic retinopathy. Eye (2010) 24, 1136–1142.
20. Brucker AJ, Qin H, Antoszyk A N, Beck R W, Bressler N M, Browning D J, et al., Diabetic Retinopathy Clinical Research Network, Observational study of the development of diabetic macular edema following panretinal (scatter) photocoagulation given in 1 or 4 sittings. Arch Ophthalmol 2009; 127: 132–140.
21. Fong DS, Ferris FL 3rd, Davis MD, Chew EY. Causes of severe visual loss in the early treatment diabetic retinopathy study: ETDRS report no. 24. Am J Ophthalmol. 1999 Feb; 127(2):137-41.
2. Lee DE, Lee JH, Lim HW, Kang MH, Cho HY, Seong M. The Effect of Pattern Scan Laser Photocoagulation on Peripapillary Retinal Nerve Fiber Layer Thickness and Optic Nerve Morphology in Diabetic Retinopathy. Korean J Ophthalmol 2014; 28(5):408-416.
3. Jennings PE, MacEwen CJ, Fallon TJ, Scott N, Haining WM, Belch J J. Oxidative effects of laser photocoagulation. Free Radic Biol Med 19 91; 11:327-30.
4. Stefansson E. Oxygen and diabetic eye disease. Graefes Arch Clin Exp Ophthalmol 1990; 228:120 -3.
5. Guyer DR, D’Amico DJ, Smith CW. Subretinal fibrosis after laser photocoagulation for diabetic macular edema. Am J Ophthalmol. 1992; 113:652-6.
6. Morgan CM, Schatz H. Atrophic creep of the retinal pigment epithelium after focal macular photocoagulation. Ophthalmology. 1989; 96:96e103.
7. Schatz H, Madeira D, McDonald HR, Johnson RN. Progressive enlargement of laser scars following grid laser photocoagulation for diffuse diabetic macular edema. Arch Ophthalmol. 1991; 109:1549e51.
8. Varley MP, Frank E, Purnell EW. Subretinal neovascularization after focal argon laser for diabetic macular edema. Ophthalmology 1988; 95:567e73 .
9. Shin JS, Lee YH. Changes in Macular Retinal Layers and Peripapillary Nerve Fiber Layer Thickness after 577-nm Pattern Scanning Laser in Patients with Diabetic Retinopathy. Korean J Ophthalmol 2017; 31(6):497-507.
10. Ozdek S, Lonneville YH, Onol M, Yetkin I, Hasanreisoğlu B B. Assessment of nerve fiber layer in diabetic patients with scanning laser polarimetry. Eye (Lond) 20 02;16:761-5 .
11. Jain A, Blumenkranz MS, Paulus Y, Wiltberger M W, Andersen D E, Huie P, et al., Effect of pulse duration on size and character of the lesion in retinal photocoagulation. Arch Ophthalmol2008; 126:78-85.
12. Sanghvi C, McLauchlan R, Delgado C, Young L, Charles S J, Marcellino G, et al., Initial experience with the Pascal photocoagulator: a pilot study of 75 procedures. Br J Ophthalmol20 08;92:1061- 4.
13. Fong DS, Girach A, Boney A. Visual side effects of successful scatter laser photocoagulation surgery for proliferative diabetic retinopathy: a literature review. Retina 2007; 27(7): 816–824.
14. Dowler JG. Laser management of diabetic retinopathy. J R Soc Med 2003; 96(6): 277–279.
15. I Yilmaz, I Perente. Changes in pupil size following panretinal retinal photocoagulation: conventional laservs pattern scan laser (PASCAL). Eye 2016; 30,1359–1364 .
16. Hande Çeliker, Azer Erdağı Bulut. Comparison of Efficacy and Side Effects of Multispot Lasers and Conventional Lasers for Diabetic Retinopathy Treatment. Turk J Ophthalmol 2017; 47:34-41.
17. Muqit MM, Marcellino GR.Optos-guided pattern scan laser (Pascal)-targeted retinal photocoagulation in proliferative diabetic retinopathy. Acta Ophthalmol. 2013; 91:251-258.
18. Nagpal M, Marlecha S, Nagpal K. Comparison of laser photocoagulation for diabetic retinopathy using 532-nm standard laser versus multispot pattern scan laser (PASCAL). Retina. 2010;30:452-458.
19. Muqit MM, Wakely L, Stanga PE, Henson DB, Ghanchi FD. Effects of conventional argon panretinal laser photocoagulation on retinal nerve fibre layer and driving visual fields in diabetic retinopathy. Eye (2010) 24, 1136–1142.
20. Brucker AJ, Qin H, Antoszyk A N, Beck R W, Bressler N M, Browning D J, et al., Diabetic Retinopathy Clinical Research Network, Observational study of the development of diabetic macular edema following panretinal (scatter) photocoagulation given in 1 or 4 sittings. Arch Ophthalmol 2009; 127: 132–140.
21. Fong DS, Ferris FL 3rd, Davis MD, Chew EY. Causes of severe visual loss in the early treatment diabetic retinopathy study: ETDRS report no. 24. Am J Ophthalmol. 1999 Feb; 127(2):137-41.
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