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Br J Ophthalmol 89:782-783 doi:10.1136/bjo.2004.062315
  • Letter

Informed consent and medical devices: the case of the contact lens

Table 1

 Survey of 560 medical students who are contact lens wearers. All results are in percentages

*Actual complications reported by students. Blood vessel formation on the cornea (BV). Soft disposable (SDL), soft contact lens (SCL), rigid gas permeable (RGP), or hard contact lens (HGP).
Provision of information versus reported complications (%)
Risk Verbal Written Complications*
Ulcer 18 4 3
BV 22 4 8
Scar 21 4 4
Ptosis 4 3 1
Reported awareness of risk of corneal ulceration
SDL Aware Unaware
Greater 18 17
Same 41 18
Less 41 65
SCL Aware Unaware
Greater 23 21
Same 40 7
Less 37 72
HGP Aware Unaware
Greater 40 29
Same 2 0
Less 58 71
Knowledge of risk of corneal ulcer versus adequacy of advice
All Adequate advice Inadequate advice
SDL 14 23 21
SCL 14 24 22
RGP 12 23 17
Percentage (%) who would wear contact lens with knowledge of risks
Yes 87
No 8

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