Premium
Visual recovery after vitrectomy for macular hole using 25‐gauge instruments
Author(s) -
Shinoda Hajime,
Shinoda Kei,
Satofuka Shingo,
Imamura Yutaka,
Ozawa Yoko,
Ishida Susumu,
Inoue Makoto
Publication year - 2008
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1600-0420.2007.01000.x
Subject(s) - vitrectomy , macular hole , ophthalmology , optometry , gauge (firearms) , medicine , visual acuity , materials science , metallurgy
. Purpose: To determine whether vitrectomy with 25‐gauge instruments contributes to better postoperative visual recovery after macular hole (MH) surgery. Methods: The medical records for 46 consecutive eyes operated for MH by a single surgeon were retrospectively examined. Vitrectomy had been performed with a 25‐gauge instrument in 23 eyes (25‐G group) and with a 20‐gauge instrument in 23 eyes (20‐G group). Postoperative visual acuity (VA) in logMAR (logarithm of the minimum angle of resolution) units after 1 week and 1, 3, 6, 9 and 12 months, operating time, and volume of intraocular irrigating fluid were compared between the two groups. Results: Mean preoperative logMAR VA was 0.72 in the 25‐G group and 0.68 in the 20‐G group (p = 0.282, unpaired t ‐test). One week after surgery, VA was significantly better in the 25‐G group (0.40 ± 0.34) than in the 20‐G group (0.58 ± 0.30) (p = 0.020). This significant difference was maintained until 9 months after surgery, but was no longer evident at 12 months (p = 0.182). Operating time was significantly shorter in the 25‐G group (56 ± 16 mins) than in the 20‐G group (85 ± 28 mins) (p = 0.003, unpaired t ‐test). The volume of intraocular irrigating fluid was significantly less in the 25‐G group (244 ± 72 ml) than in the 20‐G group (416 ± 113 ml) (p < 0.0001). Conclusions: The use of 25‐gauge vitrectomy instruments leads to better postoperative visual recovery following surgery for MH during the first 9 months, probably as a result of shorter surgical time and a lower volume of intraocular irrigating fluid.