Madam Lam AT (F/85) came for eye examination, with complaint of of fresnel prism on the left side of her bifocal glasses keep coming out.. that has caused her to almost trip & fall due to seeing double on the stairs. She first noticed seeing double 10years ago, doctor told her about the increase of ICP that compresses her nerve. Without fresnel, she sees double at distance.. near vision is fine.
Vision without glasses
R: 6/12-
L: 6/18- 6/15-
Existing glasses
R: +3.25/-1.25×90 (6/12-)
L: +3.00/-1.00×90 5BO (6/18-, sometimes 6/12-)
Add: +2.75
Examination shows:
R: +3.25/-1.25×90 (6/12-) (PH 6/12)
L: +3.00/-1.00×90 5BO (6/18-, sometimes 6/12-) (PH 6/12-)
Add: +2.75 (N5@40cm)
Lowering DS & DC is xfavoured
Other assessments show:
Cover Test
Distance: OS Esotropia
Near: NMD
Maddox Rod
Distance: L 10 BO
Near: Ortho
Madam Lam reported having another glasses with Fresnel. We ask her to bring along & we will continue with the remaining eye examination when she comes.
We will suggest to have the prism incorporated in her glasses since the magnitude has stabilised.