Dr. SPS Grewal

Dr. S.P.S. Grewal, a distinguished ophthalmologist with over four decades of experience, serves as a professor at Feinberg School of Medicine, Northwestern University USA, and has completed more than 80,000 eye surgeries. His expertise, particularly in advanced cataract and refractive surgeries, has earned him international acclaim, including many awards from the American Academy of Ophthalmology.

As the founder of the Grewal Eye Institute in Chandigarh in 1993, Dr. Grewal has revolutionized eye care in India, combining state-of-the-art treatment with compassionate care. The hospital, known for its advanced technological integration WITH personalized CARE, also serves as center for advanced learning, affiliated with prestigious U.S. universities, and attracts global residents every year.  Dr. SPS Grewal’s interests outside the medical field, such as photography and programming, underscore his continuous pursuit of innovation and his passion for adopting new technologies. This enthusiasm further extends to his personal hobbies, including cycling and hiking, which embody his dynamic approach to life and work.

Beyond his clinical and academic roles, Dr. Grewal is committed to community service. Through the Grewal Eye Institute, he organizes free eye camps and surgeries for the underprivileged, extending his impact to rural areas. Additionally, in collaboration with the Rotary Club, he has played a key role in international initiatives, such as the Serve Beyond Borders project in Uganda, further demonstrating his dedication to global eye health.

PUBLICATIONS:

To compare intralesional and oral propranolol for treating periorbital and eyelid capillary hemangiomas.
Mehta A, Bajaj MS, Pushker N, Chawla B, Pujari A, Grewal SS, Grewal SPS, Singh SR, Kishore A, Yadav NS.
Indian J Ophthalmol. 2019 Dec;67(12):1974-1980. doi: 10.4103/ijo.IJO_59_19.

Selective suture cutting for control of astigmatism following cataract surgery.
Bansal RK, Gupta A, Grewal SP.
Indian J Ophthalmol. 1992 Jul-Sep;40(3):71-3.

Hand Sanitizer-Induced Ocular Injury: A COVID-19 Hazard in Children.
Yangzes S, Grewal S, Gailson T, Grewal SPS.
JAMA Ophthalmol. 2021 Mar 1;139(3):362-364. doi: 10.1001/jamaophthalmol.2020.6351.

Swept source optical coherence tomography angiography of a case of retinal artery macro-aneurysm before and after combined laser and intra-vitreal ranibizumab treatment.
Brar M, Grewal SPS, Grewal DS, Sharma M, Dogra MR.
Indian J Ophthalmol. 2022 Jul;70(7):2710-2712. doi: 10.4103/ijo.IJO_160_22.

Outcomes of intravitreal anti-VEGF injections and panretinal photocoagulation in preretinal hemorrhage secondary to proliferative diabetic retinopathy involving the fovea.
Brar M, Sharma M, Grewal SPS, Dogra M.
Indian J Ophthalmol. 2024 May 1;72(5):687-691. doi: 10.4103/IJO.IJO_2296_23. Epub 2024 Feb 23.

Spontaneous extrusion of cysticercosis: report of three cases.
Bansal RK, Gupta A, Grewal SP, Mohan K.
Indian J Ophthalmol. 1992 Apr-Jun;40(2):59-60.

Repeatability of corneal parameters with Pentacam after laser in situ keratomileusis.
Jain R, Dilraj G, Grewal SP.
Indian J Ophthalmol. 2007 Sep-Oct;55(5):341-7.

Evaluation of subconjunctival bevacizumab as an adjunct to trabeculectomy a pilot study.
Grewal DS, Jain R, Kumar H, Grewal SP.
Ophthalmology. 2008 Dec;115(12):2141-2145.e2. doi: 10.1016/j.ophtha.2008.06.009. Epub 2008 Aug 9.

Scheimpflug imaging of pediatric posterior capsule rupture.
Grewal DS, Jain R, Brar GS, Grewal SP.
Indian J Ophthalmol. 2009 May-Jun;57(3):236-8. doi: 10.4103/0301-4738.49404.

Correlation of nuclear cataract lens density using Scheimpflug images with Lens Opacities Classification System III and visual function.
Grewal DS, Brar GS, Grewal SP.
Ophthalmology. 2009 Aug;116(8):1436-43. doi: 10.1016/j.ophtha.2009.03.002. Epub 2009 Jun 4.

Role of scheimpflug imaging in traumatic intralenticular foreign body.
Grewal SP, Jain R, Gupta R, Grewal D.
Am J Ophthalmol. 2006 Oct;142(4):675-6. doi: 10.1016/j.ajo.2006.04.064.

Scheimpflug imaging in late Capsular Bag Distention syndrome after phacoemulsification.
Jain R, Grewal D, Gupta R, Grewal SP.
Am J Ophthalmol. 2006 Dec;142(6):1083-5. doi: 10.1016/j.ajo.2006.06.055.

Impact of COVID-19-related lockdown on retinal disorders treated with intravitreal injections.
Brar M, Grewal SPS, Grewal DS, Sharma M, Dogra MR.
Oman J Ophthalmol. 2022 Jun 29;15(2):168-174. doi: 10.4103/ojo.ojo_74_21. eCollection 2022 May-Aug.

Rapid regression of idiopathic multifocal choroiditis with intravitreal methotrexate-wide-field optical coherence tomography angiography-based study.
Brar M, Grewal SPS, Grewal DS, Sharma M, Dogra MR.
Oman J Ophthalmol. 2022 Aug 3;16(1):123-125. doi: 10.4103/ojo.ojo_446_20. eCollection 2023 Jan-Apr.

Anterior ischemic optic neuropathy and branch retinal artery occlusion in cavernous sinus thrombosis.
Gupta A, Jalali S, Bansal RK, Grewal SP.
J Clin Neuroophthalmol. 1990 Sep;10(3):193-6.

Pentacam tomograms: a novel method for quantification of posterior capsule opacification.
Grewal D, Jain R, Brar GS, Grewal SP.
Invest Ophthalmol Vis Sci. 2008 May;49(5):2004-8. doi: 10.1167/iovs.07-1056.

Natural course of intraocular pressure after cataract extraction and the effect of intracameral carbachol.
Gupta A, Bansal RK, Grewal SP.
J Cataract Refract Surg. 1992 Mar;18(2):166-9. doi: 10.1016/s0886-3350(13)80925-x.

Atrophy of myelinated nerve fibers in pituitary adenoma.
Gupta A, Khandalavala B, Bansal RK, Jain IS, Grewal SP.
J Clin Neuroophthalmol. 1990 Jun;10(2):100-2.

Posterior corneal elevation after LASIK with three flap techniques as measured by Pentacam.
Grewal DS, Brar GS, Grewal SP.
J Refract Surg. 2011 Apr;27(4):261-8. doi: 10.3928/1081597X-20100618-01. Epub 2010 Jul 1.

Quantitative analysis of anterior chamber following peripheral laser iridotomy using Pentacam in eyes with primary angle closure.
Jain R, Grewal D, Grewal SP.
Eur J Ophthalmol. 2012 May 14:0. doi: 10.5301/ejo.5000158. Online ahead of print.

Study of juvenile retinal detachment.
Gangwar DN, Dogra MR, Jain IS, Grewal SP.
Indian J Ophthalmol. 1983;31 Suppl:892-4.

In vivo fluorescein staining of SI-30NB silicone intraocular lens.
Grewal SP, Jain R, Grewal D, Gupta R.
J Cataract Refract Surg. 2007 Jan;33(1):156-8. doi: 10.1016/j.jcrs.2006.07.046.

Unilateral electric cataract: Scheimpflug imaging and review of the literature.
Grewal DS, Jain R, Brar GS, Grewal SP.
J Cataract Refract Surg. 2007 Jun;33(6):1116-9. doi: 10.1016/j.jcrs.2007.01.041.

Corneal collagen crosslinking using riboflavin and ultraviolet-A light for keratoconus: one-year analysis using Scheimpflug imaging.
Grewal DS, Brar GS, Jain R, Sood V, Singla M, Grewal SP.
J Cataract Refract Surg. 2009 Mar;35(3):425-32. doi: 10.1016/j.jcrs.2008.11.046.

Clinical applications of Scheimpflug imaging in cataract surgery.
Grewal DS, Grewal SP.
Saudi J Ophthalmol. 2012 Jan;26(1):25-32. doi: 10.1016/j.sjopt.2011.11.001.

Anterior radial keratotomy experience in 600 cases of myopia.
Singh D, Grewal SP, Kumar N.
Ann Ophthalmol. 1984 Aug;16(8):757-61.

Enterovirus 70 acute hemorrhagic conjunctivitis–sporadic cases.
Gangwar DN, Grewal SP, Jain IS, Biswas J, Pal SR, Kaiwar R.
Jpn J Ophthalmol. 1984;28(2):183-8.

Cilioretinal artery occlusion: a case report.
Gangwar DN, Grewal SP, Jain IS, Vishwanath K, Dhir SP.
Ann Ophthalmol. 1984 Nov;16(11):1022-4.

Retinal detachment surgery sine retinopexy.
Gangwar DN, Grewal SP, Jain IS.
Indian J Ophthalmol. 1983 May;31(3):197-8.

Emergency keratoplasty in perforating corneal ulcers and ring abscess of cornea.
Singh D, Gill RP, Grewal SP.
Indian J Ophthalmol. 1980 Oct;28(3):111-3.

Longitudinal study of serpiginous choroiditis and serpiginous like choroiditis using wide field OCT angiography.
Brar M, Sharma M, Grewal S, Grewal D, Dogra MR.
Eur J Ophthalmol. 2022 May;32(3):1555-1561. doi: 10.1177/11206721211028529. Epub 2021 Jun 27.

Comparison of an aspheric monofocal intraocular lens with the new generation monofocal lens using defocus curve.
Yangzes S, Kamble N, Grewal S, Grewal SPS.
Indian J Ophthalmol. 2020 Dec;68(12):3025-3029. doi: 10.4103/ijo.IJO_985_20.

Comparison of wide-field swept source optical coherence tomography angiography and fundus autofluorescence in tubercular serpiginous-like choroiditis.
Brar M, Sharma M, Grewal SPS, Grewal DS.
Indian J Ophthalmol. 2020 Jan;68(1):106-211. doi: 10.4103/ijo.IJO_78_19.

Quantification of retinal microvasculature and neurodegeneration changes in branch retinal vein occlusion after resolution of cystoid macular edema on optical coherence tomography angiography.
Brar M, Sharma M, Grewal SPS, Grewal DS.
Indian J Ophthalmol. 2019 Nov;67(11):1864-1869. doi: 10.4103/ijo.IJO_1554_18.

Treatment Response in Sympathetic Ophthalmia as Assessed by Widefield OCT Angiography.
Brar M, Sharma M, Grewal SPS, Grewal DS.
Ophthalmic Surg Lasers Imaging Retina. 2018 Sep 1;49(9):726-730. doi: 10.3928/23258160-20180831-13.

Rapid regression of retinal neovascularization following intravitreal bevacizumab in branch retinal vein occlusion imaged by optical coherence tomography angiography.
Brar M, Grewal DS, Sharma M, Grewal SPS.
Indian J Ophthalmol. 2018 Apr;66(4):572. doi: 10.4103/ijo.IJO_868_17.

Femtosecond laser-assisted cataract surgery in pre-existing posterior capsule rupture following closed globe injury.
Grewal DS, Grewal SP.
Clin Exp Ophthalmol. 2015 Jul;43(5):478-80. doi: 10.1111/ceo.12472. Epub 2015 Jan 14.

International Values of Central Pachymetry in Normal Subjects by Rotating Scheimpflug Camera.
Feng MT, Kim JT, Ambrósio R Jr, Belin MW, Grewal SP, Yan W, Shaheen MS, Jordan CA, McGhee C, Maeda N, Neuhann TH, Dick HB, Steinmueller A.
Asia Pac J Ophthalmol (Phila). 2012 Jan-Feb;1(1):13-8. doi: 10.1097/APO.0b013e31823e58da.

Intraoperative modifications required during femtosecond laser-assisted cataract surgery for lamellar cataracts.
Grewal DS, Basti S, Grewal SP.
Eye (Lond). 2014 Nov;28(11):1385-7. doi: 10.1038/eye.2014.184. Epub 2014 Aug 1.

International values of corneal elevation in normal subjects by rotating Scheimpflug camera.
Feng MT, Belin MW, Ambrósio R Jr, Grewal SP, Yan W, Shaheen MS, Jordon CA, McGhee C, Maeda N, Neuhann TH, Dick HB, Steinmueller A.
J Cataract Refract Surg. 2011 Oct;37(10):1817-21. doi: 10.1016/j.jcrs.2011.04.030. Epub 2011 Aug 15.

Anterior chamber depth in normal subjects by rotating scheimpflug imaging.
Feng MT, Belin MW, Ambrósio R Jr, Grewal SP, Yan W, Shaheen MS, McGhee C, Maeda N, Neuhann TH, Burkhard Dick H, Alageel SA, Steinmueller A.
Saudi J Ophthalmol. 2011 Jul;25(3):255-9. doi: 10.1016/j.sjopt.2011.04.005. Epub 2011 Apr 30.

Comparison of Scheimpflug imaging and spectral domain anterior segment optical coherence tomography for detection of narrow anterior chamber angles.
Grewal DS, Brar GS, Jain R, Grewal SP.
Eye (Lond). 2011 May;25(5):603-11. doi: 10.1038/eye.2011.14. Epub 2011 Feb 18.

Assessment of central corneal thickness in normal, keratoconus, and post-laser in situ keratomileusis eyes using Scheimpflug imaging, spectral domain optical coherence tomography, and ultrasound pachymetry.
Grewal DS, Brar GS, Grewal SP.
J Cataract Refract Surg. 2010 Jun;36(6):954-64. doi: 10.1016/j.jcrs.2009.12.033.

Artificial neural network-based glaucoma diagnosis using retinal nerve fiber layer analysis.
Grewal DS, Jain R, Grewal SP, Rihani V.
Eur J Ophthalmol. 2008 Nov-Dec;18(6):915-21. doi: 10.1177/112067210801800610.

Square-edge polymethylmethacrylate intraocular lens design for reducing posterior capsule opacification following paediatric cataract surgery: initial experience.
Brar GS, Grewal DS, Ram J, Singla M, Grewal SP.
Clin Exp Ophthalmol. 2008 Oct;36(7):625-30. doi: 10.1111/j.1442-9071.2008.01818.x.

Posterior capsule rupture following closed globe injury: Scheimpflug imaging, pathogenesis, and management.
Grewal DS, Jain R, Brar GS, Grewal SP.
Eur J Ophthalmol. 2008 May-Jun;18(3):453-5. doi: 10.1177/112067210801800323.