Visual Field Abnormalities among Adolescent Boys with Hearing Impairments

Area of Science:

• Ophthalmology
• Audiology
• Public Health

Background:

• Hearing impairment is a prevalent condition in adolescents.
• The relationship between hearing impairment and visual field (VF) status is not well-established.
• Early detection of visual field defects is crucial for timely intervention.

Purpose of the Study:

• To compare visual field (VF) categorizations between adolescent boys with and without hearing impairments.
• To assess the prevalence of VF defects in relation to hearing impairment severity.

Main Methods:

• A cross-sectional study involving 64 adolescent boys with hearing impairments and 68 age-matched normal-hearing controls.
• Participants had an intelligence quotient (IQ) > 70.
• Visual fields were evaluated using automated perimetry (Humphrey Visual Field Analyzer) to determine foveal threshold (FT), mean deviation (MD), and Glaucoma Hemifield Test (GHT) results.

Main Results:

• Adolescent boys with hearing impairments exhibited significantly higher percentages of abnormal VFs compared to controls (40.6% vs. 22.1% by FT, 59.4% vs. 19.1% by MD, 31.2% vs. 8.8% by GHT; P < 0.0001).
• The hearing impairment group showed significantly worse mean MD and FT values.
• Significant differences were observed in GHT results between the groups (P < 0.0001).

Conclusions:

• Adolescent boys with hearing impairments have a substantially higher prevalence of visual field abnormalities.
• These findings underscore the importance of routine and thorough visual field assessments for individuals with hearing impairments.
• Further research is warranted to explore the underlying mechanisms connecting hearing loss and visual field deficits.