Abu Bakra (RA) said this for three times in every morning and in evening:

اَللَّهُمَّ عَافِنِيْ فِي بَدَنِي اَللَّهُمَّ عَافِنِيْ فِي سَمْعِيْ اَللَّهُمَّ عَافِنِيْ فِي بَصَرِيْ لَا إِلَهَ إِلَّا أَنْتَ

Allaahumma 'aafinee fee badanee, Allaahumma 'aafinee fee sam'ee, Allaahumma 'aafinee fee basaree, laa 'ilaaha 'illaa 'Anta

O Allah! Keep my body healthy! O Allah! Keep my hearing healthy! O Allah! Keep my eyesight healthy! There is no true god but you.

Reference: Hasan. Abu Dawud: 5090