Wave front aberration in the hydrogel lens-wearing eye

Area of Science:

• Ophthalmology
• Optometry
• Optical Engineering

Background:

• Understanding corneal topography is crucial for accurate vision correction.
• Soft contact lenses can alter the optical properties of the eye.
• Wavefront aberrations affect visual quality, especially under varying light conditions.

Purpose of the Study:

• To measure the surface topography of the cornea and a soft contact lens.
• To calculate wavefront aberrations based on topographical data.
• To investigate the impact of luminance and pupil size on visual function.

Main Methods:

• Photokeratoscopy was used to measure corneal and soft lens topography.
• Wavefront aberration calculations were performed using collected topographical data.
• Corneal and lens topography were assessed in situ.

Main Results:

• Corneal and soft lens topography data were successfully collected.
• Wavefront aberrations were calculated from the topographical measurements.
• Aberrational effects are minimal at high luminance with small pupils.
• Visual function is likely impaired at low luminance with large pupils.

Conclusions:

• Pupil size and luminance significantly influence visual function by altering aberrational effects.
• Soft contact lens wear can impact the eye's optical performance.
• Minimizing aberrations is key to optimizing visual acuity in diverse lighting conditions.