JCRS

Toric IOL vs. AK

A randomised prospective trial enrolled 34 patients to compare toric intraocular lens (IOL) implantation and astigmatic keratotomy (AK). Consecutive patients with visually significant cataract and moderate astigmatism (1.25 to 3.00 D) were randomised to either undergo temporal clear corneal 2.75mm phacoemulsification with toric IOL implantation or 30-degree coupled AK at the 7.0mm optic zone. Evaluations postoperatively showed no difference in uncorrected distance visual acuity or corrected distance visual acuity between the two groups at any follow-up visit. The mean preoperative and postoperative refractive cylinder was 2.00 D ± 0.49 (SD) ± 0.41 D, respectively, in the keratotomy group. The mean residual astigmatism at three months was 0.44 ± 1.89 @ 160 in the toric IOL group and 0.77 ± 1.92 @ 174 in the keratotomy group. All eyes in the toric IOL group and 14 eyes (84 per cent) in the keratotomy group achieved a residual refractive cylinder of 1.00 D or less. JS Tityal et al., JCRS, “Toric intraocular lens implantation versus astigmatic keratotomy to correct astigmatism during phacoemulsification”, Vol. 40, No. 5, 741 -747.

Triamcinolone acetonide-assisted
anterior vitrectomy

Researchers looked at long-term outcomes of triamcinolone acetonide-assisted anterior vitrectomy during complicated cataract surgery with vitreous loss in 15 patients. Ocular examination and spectral-domain optical coherence tomography showed significant improvement in mean corrected distance visual acuity. The study concluded that triamcinolone acetonide-assisted anterior vitrectomy during complicated cataract surgery with vitreous loss was safe and effective. M Shai et al., JCRS, “Long-term outcomes of triamcinolone acetonide-assisted anterior vitrectomy during complicated cataract surgery with vitreous loss”, Vol. 40, No. 5, 722-727.

Crosslinking comparison

A study of 16 patients (21 eyes) used anterior segment optical coherence tomography to compare corneal stroma demarcation line depth after corneal collagen crosslinking with two treatment protocols. Patients were either treated for 30 minutes with 3 mW/cm2 according to the standard Dresden protocol or for 10 minutes with 9 mW/cm2 of UVA irradiation intensity. All crosslinking procedures were performed using the same ultraviolet-A irradiation device (CCL-365). The mean corneal stroma demarcation line depth was 350.78 μm ± 49.34 in the 30-minute group compared with 288.46 ± 42.37 μm in the shorter time treatment group. The difference was statistically significant. GD Kymionis et al., JCRS, “Corneal stroma demarcation line after standard and high-intensity collagen cross-linking determined with anterior segment optical coherence tomography”, Vol. 40, No. 5, - 736 -740.