Boston ® Materials Recommendation

Application/Usage Boston ES Boston EO Boston XO Boston XO2
(DK 18) (Dk 58) (Dk 100) (Dk 141)
Daily wear Excellent Excellent Excellent Excellent
Flexible wear² Not recommended Excellent Excellent Excellent
Extended wear² Not recommended Not recommended Excellent Excellent
Planned replacement Not recommended Not recommended Excellent Excellent
Thin designs Excellent Excellent Not recommended Not recommended
Ultrathin designs Excellent Not recommended Not recommended Not recommended
Toric designs Excellent
(Hyperopic toric)
Excellent Excellent
(Hyperopic toric)
Excellent
Presbyopic designs Excellent Excellent Good ??
Corneal rehabilitation
(post PMMA wear)
Excellent Good Not recommended ??
GPC rehabilitation Excellent Excellent Excellent Excellent
Keratoconus Excellent Excellent Good Good
Aphakia Fair Good Excellent Excellent
Post corneal surgery fitting Excellent Excellent Excellent Excellent
High oxygen demand corneas Fair Excellent Excellent Excellent
Dry eye Excellent Excellent Excellent Excellent
Daily orthokeratology² (ortho-k) Excellent Excellent Excellent Excellent
Overnight orthokeratology² Not recommended Not recommended Excellent Excellent

² Only Boston® Equalens I and Boston® Equalens II are currently USFDA approved for extended wear.