Background: Diabetes mellitus has been associated with increased dry eye disease (DED) and exacerbates DED pathology.
Objective: To investigate the potential relationship between corneal nerve loss and ocular pain among diabetic patients with dry eye (DE).
Design: A cross-sectional study.
Setting: He Eye Specialist Hospital, Shenyang, China.
Participants: This study recruited 124 eyes of 62 diabetic patients diagnosed with DED between August and October 2022.
Main Outcome Measures: Best-corrected visual acuity, intraocular pressure, non-invasive tear breakup time, tear meniscus height, tear film lipid layer, conjunctival hyperaemia (redness score), conjunctivocorneal epithelial staining (CS score), central corneal sensitivity and vitro confocal corneal microscopy was assessed in all subjects. The Ocular Surface Disease Index Questionnaire assessed DE symptoms and ocular pain.
Results: The study's final analysis included 26 patients (52 eyes) without ocular pain and 36 patients (72 eyes) with ocular pain. The corneal nerve fibre density (CNFD), corneal nerve branch density (CNBD) and corneal nerve fibre length (CNFL) in patients with ocular pain were significantly lower than those without (p<0.001, p=0.004, and p<0.001, respectively). CNFD, CNBD and CNFL negatively correlated with ocular pain (r=-0.385, r=-0.260, r=-0.358, respectively). Moreover, CNFD, CNBD and CNFL have a significant (p<0.05) positive correlation with corneal sensitivity (r=0.523, r=0.330, r=0.421, respectively).
Conclusions: Corneal nerve loss was associated with ocular pain and decreased corneal sensitivity in diabetic patients with DE. Further studies into the neurological role of ocular surface diseases can elaborate diagnostics, prognosis and treatment of diabetic patients with DE.
Trial Registration Number: ClinicalTrials.gov (NCT05193331).
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10533686 | PMC |
| http://dx.doi.org/10.1136/bmjopen-2023-076932 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Risk factors for biometry prediction error by Barrett Universal II intraocular lens formula in Chinese patients.
Int J Ophthalmol
January 2025
Beijing Key Laboratory of Restoration of Damaged Ocular Nerve, Department of Ophthalmology, Peking University Third Hospital, Beijing 100191, China.
Aim: To investigate the influence of postoperative intraocular lens (IOL) positions on the accuracy of cataract surgery and examine the predictive factors of postoperative biometry prediction errors using the Barrett Universal II (BUII) IOL formula for calculation.
Methods: The prospective study included patients who had undergone cataract surgery performed by a single surgeon from June 2020 to April 2022. The collected data included the best-corrected visual acuity (BCVA), corneal curvature, preoperative and postoperative central anterior chamber depths (ACD), axial length (AXL), IOL power, and refractive error.
Non-contact confocal calcium imaging of murine corneal nerves.
Biomed Opt Express
January 2025
Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH 44106, USA.
Abnormal corneal nerve function and associated disease is a significant public health concern. It is associated with prevalent ocular surface diseases, including dry eye disease. Corneal nerve dysfunction is also a common side effect of refractive surgeries, as well as a symptom of diseases that cause peripheral neuropathies.
View Article and Find Full Text PDFNociplastic pain among individuals with chronic ocular surface pain: one cause for "pain without stain"?
Surv Ophthalmol
January 2025
Michigan Medicine, Department of Ophthalmology and Visual Sciences, Ann Arbor, MI, USA.
Chronic ocular surface pain (COSP) refers to interrelated symptoms such as eye burning, aching, and irritation and can occur as an isolated condition or comorbid with numerous ocular disorders, including dry eye syndrome Treatments for COSP are largely aimed at the ocular surface and modulating pain arising from damaged corneal nerves; however, the average impact of these treatments on COSP are low to absent. A potential explanation for this is that in a subset of patients with COSP, individuals have amplified and/or dysregulated neural signaling and sensory processing within the central nervous system (CNS). As in other chronic pain conditions, this might be the pathogenic mechanism primarily responsible for maintaining pain - a phenomenon now referred to as nociplastic pain.
View Article and Find Full Text PDFRetinal capillary hemangioma in a pthisical globe: Late sequelae in a case of Von Hippel-Lindau (VHL) disease presenting with endophthalmitis.
Int J Surg Case Rep
January 2025
Department of Ophthalmology, College of Medicine, King Saud University, Riyadh, Saudi Arabia; King Saud University Medical City, King Saud University, Riyadh, Saudi Arabia; Department of Pathology and Laboratory Medicine, College of Medicine, King Saud University, Riyadh, Saudi Arabia. Electronic address:
Introduction: Retinal capillary hemangioma (RCH) is a benign vascular hamartoma that can occur sporadically or as a manifestation of Von Hippel-Lindau (VHL) disease. If left untreated, it results in adverse ocular complications depending on its location and eventual visual loss.
Case Presentation: We present a 50-year-old man who was a known case of VHL with history of left eye vision loss in the left eye at the age of 30 years.
The Effect of Autologous Serum Tears 50% on the Ocular Surface of Patients With Severe Dry Eye Disease due to Sjogren Syndrome: A Prospective, Double-Blind, Randomized, Controlled, Contralateral Eye Study.
Cornea
January 2025
Department of Ophthalmology, University of Cyprus Medical School, Nicosia, Cyprus.
Purpose: To assess the impact of autologous serum (AS) tears at a 50% concentration on the ocular surface of patients with refractory dry eye disease (DED) because of Sjogren syndrome.
Methods: Twenty eyes of ten patients with severe immune-mediated DED were contralaterally randomized to receive either AS tears 50% or artificial tears between June 2021 and May 2023. Changes in tear stability, ocular surface staining, and in the morphology of the corneal sub-basal nerves were evaluated before treatment and at 1, 2, and 3 months after treatment using objective tests for DED and confocal microscopy.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!