« New “LITE” tool on the horizon | Main | Wet AMD patients treated with Lucentis show improved visual acuity with five to six doses »
May 25, 2006
Link between contrast sensitivity and aberrations not found
Eyeworld May 2006
There appears to be no correlation between contrast sensitivity and aberrations of both lower- and higher-order type, said Pravin K. Vaddavalli, MBBS, L.V. Prasad Eye Institute, Hyderabad, India. In a study of 80 eyes with a UCVA greater than or equal to 20/16, researchers found that second- and third-order aberrations were higher in subjects with higher contrast sensitivity, and fourth- and fifth-order aberrations were lower in subjects with higher contrast sensitivity. Researchers also found that third- and fourth-order aberrations showed a positive correlation with age. The testing distance for contrast sensitivity was one meter. Patients who had active ocular disease were excluded from the study, had past ocular surgery, past ocular trauma, and corneal pathology (such as a scarring).
Posted by mehdi khanlari at May 25, 2006 07:24 PM