Subject Peter Doyle (PD) had congenital bilateral cataracts removed at the age of 43. Pre-operatively PD's visual acuity was 20/80, with a resolution limit around 15 cpd, and he experienced monocular diplopia with high contrast stimuli. Post-operatively PD's visual acuity improved to approximately 20/40, with a resolution limit around 25 cpd. Using a variety of pre- and post-operative tests we have documented a wide range of neural adaptations to his limited and distorted visual input, and have found a limited amount of post-operative adaptation to his newly improved visual input. These results show that the human visual system is capable of significant adaptation to the particular optical input that is experienced. © 2002 Elsevier Science Ltd. All rights reserved.
Fine, I., Smallman, H. S., Doyle, P., & MacLeod, D. I. A. (2002). Visual function before and after the removal of bilateral congenital cataracts in adulthood. Vision Research, 42(2), 191–210. https://doi.org/10.1016/S0042-6989(01)00266-8