Change in anterior chamber depth following combined pars plana vitrectomy, phacoemulsification, and intraocular lens implantation using different types of intraocular lenses.
OBJECTIVE
To examine whether the type of intraocular lens (IOL) used in combined pars plana vitrectomy, phacoemulsification, and IOL implantation affects the changes in anterior chamber depth over time.


METHODS
A retrospective review was carried out on data from 70 eyes of 70 patients who underwent combined vitrectomy and cataract surgery. Vitrectomy using a 23-gauge system was performed on 66 eyes and using a 25-gauge system on four eyes. The implanted IOLs were the HOYA VA-65BB lens in 38 eyes (6.5-mm group) and the ETERNITY X-70 lens in 32 eyes (7-mm group). Anterior chamber depth was measured using a PENTACAM analyzer before surgery and 1 week, 1 month, and 3 months after surgery.


RESULTS
In the 7-mm group, no differences were found in anterior chamber depth between eyes with and without fluid-gas exchange at any point of time after surgery. In the 6.5-mm group, eyes undergoing fluid-gas exchange showed an increase in anterior chamber depth between 1 week and 1 month after surgery. In eyes undergoing fluid-gas exchange, anterior chamber depth 1 week after surgery was shallower in the 6.5-mm group than in the 7-mm group.


CONCLUSIONS
Different types of three-piece IOLs showed different degrees of shift due to fluid-gas exchange.
Department of Ophthalmology, The Jikei University School of Medicine, Tokyo, Japan. akirawa@jikei.ac.jp
Akira
A
Watanabe
Tomohiro
T
Shibata
Miho
M
Ozaki
Kiichirou
K
Okano
Kenichi
K
Kozaki
Hiroshi
H
Tsuneoka
D000867:Anterior Chamber / Q000473:pathology*; D001837:Body Weights and Measures; D002386:Cataract / Q000150:complications; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D018918:Phacoemulsification; D012164:Retinal Diseases / Q000150:complications / Q000601:surgery; D012189:Retrospective Studies; D013459:Sulfur Hexafluoride / Q000008:administration & dosage; D014821:Vitrectomy
D013459:Sulfur Hexafluoride