Effect of Computer Tasks in Straight Gaze on Corneal Topographic Indices

Area of Science:

• Ophthalmology
• Optometry
• Corneal Physiology

Background:

• Near visual tasks are common in daily life.
• Understanding their impact on ocular structures is crucial for eye health.
• Corneal topography is vital for diagnosing and managing various eye conditions.

Purpose of the Study:

• To assess the effect of prolonged movie-watching in a straight gaze position on corneal topographic parameters.
• To determine if this common near visual activity introduces measurement errors in corneal topography.

Main Methods:

• Thirty myopic young adults underwent corneal topography using Oculus Keratograph 4.
• Participants watched a movie at 40 cm for 30 minutes in a straight gaze position.
• Corneal topography was measured before, immediately after, and at 10, 20, and 30 minutes post-task.

Main Results:

• No statistically significant changes were observed in Zernike coefficients (P $$ 0.130) after the near visual task.
• Corneal irregularities (P = 0.208), spherical eccentricity (P = 0.270), and other measured parameters remained unaffected.
• The straight gaze movie-watching activity did not alter key corneal topographic indices.

Conclusions:

• Watching movies in a straight gaze position does not impact corneal topographic parameters.
• This common near visual task does not introduce significant errors into corneal topographic measurements.
• Ophthalmologists and optometrists can be confident in corneal topography results following such activities.