Health Condition 1: H408- Other glaucoma
Conditions
Interventions
Intervention1: NIL: NIL
Control Intervention1: NIL: NIL
Sponsors
AIIMS New Delhi
Eligibility
Inclusion criteria
Inclusion criteria: Age: Adults aged 18 years and above. Clinical Indication: Patients undergoing Humphrey Visual Field (HVF) 24-2 test as part of routine eye care or clinical evaluation for the first time. Vision Status: Patients with a best-corrected visual acuity (BCVA) of 6/18 (0.48 logMAR) or better in the tested eye. Educational Background: Patients with varied levels of education, ranging from no formal education to higher education (postgraduate level). Cognitive and Physical Ability: Patients must be mentally and physically capable of understanding and following HVF test instructions. Informed Consent: Patients willing to provide written informed consent to participate in the study.
Exclusion criteria
Exclusion criteria: Severe Visual Impairment: Best-corrected visual acuity (BCVA) worse than 6/18 (0.48 logMAR) in the tested eye. Media Opacities: Presence of significant cataract, corneal opacity, or vitreous haze that may interfere with visual field testing. Neurological Disorders: History of stroke, dementia, or other neurocognitive impairments affecting the ability to perform the test reliably. Hearing or Communication Impairment: Patients with severe hearing loss or language barriers that prevent understanding of test instructions. Unstable Fixation: Patients with nystagmus or other ocular motor disorders leading to poor fixation control. Previous Visual Field Testing Experience: Patients who have undergone HVF testing ever before (to minimize learning effects). Ocular Conditions Affecting Visual Field: Advanced glaucoma, retinal diseases (e.g., severe diabetic retinopathy, retinal dystrophies), or optic nerve pathologies that could confound test performance. Medication Use: Patients on CNS-active medications (such as sedatives, antidepressants) that could affect concentration and response time. Refusal to Participate: Patients unwilling to provide informed consent.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Reliability and accuracy of Humphrey Visual Field (HVF) test performance based on the participant s educational level. oMeasured using false positives, false negatives, fixation losses, and mean deviation (MD) values. oComparison across different educational levels.Timepoint: 1. Baseline (prior to HVF test) 2. During the HVF test (real-time assessment) 3. Immediately after the HVF test (post-test evaluation) | — |
Secondary
| Measure | Time frame |
|---|---|
| 1. Impact of Cognitive & Attention Abilities on HVF Performance o Assessed using the Trail Making Test (TMT-A & B) & its correlation with HVF test reliability indices. 2. Effect of Visual Acuity on HVF Performance o Evaluated by comparing Snellen VA (converted to LogMAR) with HVF test parameters.Timepoint: 1. Baseline (before the HVF test) 2. During the test 3. Immediately after the test as this study does not involve follow-up assessments at later weeks | — |
Countries
India
Contacts
Public ContactSanjay Kumar Mishra
AIIMS, New Delhi
Outcome results
None listed