Posters

Comparison of ocular aberrations and accommodation with a new pyramid wavefront sensor-based aberrometer and a ray tracing aberrometer

Poster Details

First Author: S.Srivastava INDIA

Co Author(s):    S. Vasavada   A. Vasavada   V. Vasavada   V. Vasavada           

Abstract Details

Purpose:

To evaluate and compare ocular aberrations and accommodation amplitude using two different aberrometers in a normal population

Setting:

Iladevi Cataract & IOL Research Centre, Raghudeep Eye hospital, Ahmedabad, India.

Methods:

Prospective, observational case series in 100 eyes aged 18 to 40 years with no ocular pathology.Both ray tracing and pyramid wavefront aberrometry were performed in a random order in each eye by a single observer. Scans were captured in mesopic condition without pharmacological mydriasis. Root mean square(RMS) value (microns) for total eye aberrations, corneal aberrations and internal aberrations were compared with a distance fixation target. Subsequently, patients’ amplitude of accommodation was measured and compared by progressively giving a near fixation target upto 33cm.

Results:

Reliable measurements could be obtained for both aberrometers in all eyes. Mean pupil size was 3.4 ± 0.25mm. Analysis for RMS values of total, corneal and internal aberrations as well as accommodation amplitude ongoing. Results will be updated.

Conclusions:

The new wave front sensor based aberrometer is comparabale / better to the existing rate racing aberrometry technique.

Financial Disclosure:

None