Clinical trial NCT04873739: AS-OCT Study of Cornea and Tear Film Parameters in SLE Patients
Official title: Anterior Segment Optical Coherence Tomography Study of Cornea and Tear Film Parameters in Systemic Lupus Erythematous Patients
Study type: OBSERVATIONAL
Overall status: COMPLETED
Conditions: Systemic Lupus Erythematosus
Keywords: anterior segment optical coherence tomography
tear film
dry eye
systemic lupus erythematous
Lead sponsor: Minia University
Sponsor class: OTHER
First posted: 2021-05-05
Enrollment: 100
Sex: ALL
Minimum age (years): 18
Maximum age (years): 60
Standard ages: ADULT
Accepts healthy volunteers: yes
Observational model: COHORT
Time perspective: RETROSPECTIVE
Sampling method: NON_PROBABILITY_SAMPLE
Study population: Residents of Minia Governorate diagnosed with SLE and healthy one

Brief summary: The aim of thie study to assess tear film parameters such as tear meniscus height (TMH), tear meniscus area (TMA), and tear meniscus depth (TMD). In addition, corneal pachymetry and epithelial thickness maps in SLE patients and compared to healthy subjects of similar age and gender.

Detailed description: Systemic lupus erythematous (SLE) is a relapsing and remitting autoimmune connective tissue disorder that can affect many organs such as skin, joints, kidneys, eye, and brain (1) . SLE has a global prevalence of 0.3 to 23.2 cases per 100,000. Women are more likely than men to develop the disease. Four out of the following 11 diagnostic criteria are sufficient for the diagnosis of SLE, malar rash, discoid rash, oral ulcers, non-erosive arthritis, serositis, photosensitivity, renal disorder, neurological disorder, hematological disorder, immunological disorder, and presence of antinuclear antibodies. (2,3)

Ocular manifestations occur in about one third of SLE patients with keratoconjunctivitis sicca being the most common manifestation which is characterized by decreased tear film aqueous layer. Scleritis, retinal vasculitis (which is often associated with CNS lupus), and papillitis are considered as the most serious ocular manifestations. (4)

Corneal involvement in SLE affects the superficial epithelium, resulting in superficial punctate keratitis, which is believed to be caused by Sjögren\&#39;s syndrome (SS). However, some cases of non-infiltrative and infiltrative peripheral ulcerative keratitis have been identified (5) .

Schirmer\&#39;s test and fluorescein breakup time test (FBUT) are two common clinical tests used to analyze tear film. (6,7) Using an in vivo, non- contact technique, anterior segment optical coherence tomography (AS- OCT) is now used to image the tear film, measure the lower tear film height and area, measure corneal thickness (pachymetry), and measure surface epithelial thickness. (8,9)

Eligibility criteria: Inclusion Criteria:

1. Age ≥18 years old..
2. Patients with SLE diagnosed by a rheumatologist with no ocular involvement upon clinical examination

Exclusion Criteria:

* 1. Patients with history of intraocular surgery as cataract surgery ,retinal detachment surgery, anti-glucoma surgery.

  2. Patients with history of any corneal refractive surgery as LASIK, PRK. 3. Patients with significant media opacity as corneal opacity, cataract. 4. Patients with ocular diseases as glaucoma, uveitis. 5. Patients with any retinal affection as pathological myopia, macular hole, age related macular degeneration and retinal vascular occlusion.

  6. Patients with systemic diseases as diabetes mellitus, hypertension, abnormal kidney function.

Primary outcomes:
measure: Measurement of Tear meniscus
timeFrame: 3 months
measure: Measurement of corneal structural changes
timeFrame: 3 months
Secondary outcomes:
Other outcomes:
Locations:
city: Minya
country: Egypt
facility: Minia university hospital
Study officials:
affiliation: Minia University Hospital
name: Mohamed Abdelkader, Doctor
role: PRINCIPAL_INVESTIGATOR
affiliation: Minia University Hospital
name: Mohamed Salah, Doctor
role: STUDY_DIRECTOR
affiliation: Minia University Hospital
name: Mohamed Hamid, Doctor
role: STUDY_DIRECTOR
References:
citation: Palejwala NV, Walia HS, Yeh S. Ocular manifestations of systemic lupus erythematosus: a review of the literature. Autoimmune Dis. 2012;2012:290898. doi: 10.1155/2012/290898. Epub 2012 Jul 2.
citation: Rees F, Doherty M, Grainge MJ, Lanyon P, Zhang W. The worldwide incidence and prevalence of systemic lupus erythematosus: a systematic review of epidemiological studies. Rheumatology (Oxford). 2017 Nov 1;56(11):1945-1961. doi: 10.1093/rheumatology/kex260.
citation: Yu C, Gershwin ME, Chang C. Diagnostic criteria for systemic lupus erythematosus: a critical review. J Autoimmun. 2014 Feb-Mar;48-49:10-3. doi: 10.1016/j.jaut.2014.01.004. Epub 2014 Jan 21.
citation: Read RW. Clinical mini-review: systemic lupus erythematosus and the eye. Ocul Immunol Inflamm. 2004 Jun;12(2):87-99. doi: 10.1080/09273940490895308.
citation: Benitez del Castillo JM, Wasfy MA, Fernandez C, Garcia-Sanchez J. An in vivo confocal masked study on corneal epithelium and subbasal nerves in patients with dry eye. Invest Ophthalmol Vis Sci. 2004 Sep;45(9):3030-5. doi: 10.1167/iovs.04-0251.
citation: Kanellopoulos AJ, Aslanides IM, Asimellis G. Correlation between epithelial thickness in normal corneas, untreated ectatic corneas, and ectatic corneas previously treated with CXL; is overall epithelial thickness a very early ectasia prognostic factor? Clin Ophthalmol. 2012;6:789-800. doi: 10.2147/OPTH.S31524. Epub 2012 May 23.
citation: Nguyen P, Huang D, Li Y, Sadda SR, Ramos S, Pappuru RR, Yiu SC. Correlation between optical coherence tomography-derived assessments of lower tear meniscus parameters and clinical features of dry eye disease. Cornea. 2012 Jun;31(6):680-5. doi: 10.1097/ICO.0b013e3182261577.
citation: Li Y, Tan O, Brass R, Weiss JL, Huang D. Corneal epithelial thickness mapping by Fourier-domain optical coherence tomography in normal and keratoconic eyes. Ophthalmology. 2012 Dec;119(12):2425-33. doi: 10.1016/j.ophtha.2012.06.023. Epub 2012 Aug 20.