Clinical Results of Posterior Capsular Rupture During Cataract Operation

To evaluate the character, management and clinical results of the posterior capsular rupture during cataract surgery, we retrospectively studied the cataract surgeries that were performed between May 1989 and Decemeber 1991. We discovered 64 eyes in which the posterior capsule was torn. The overall incidence of this complication was 4.4%. Our chart review of these surgical procedure revealed that the tear occurred most frequently during the nucleus removal(44%), occured more frequently at the periphery than the center and the extent was mostly below one-third of the whole posterior capsular surface(75%). We performed vitrectomy(58%) and peripheral iridectomy(14%). Posterior capsular lenses were implallted in 56 cases. The predicted power of lens calculated with SRK-II fomula and manufacturer's A-constant was approximately 0.46 diopter less than actual postoperative refraction. Final visual acuity of 20/40 or better was achieved in 73% of the 64 cases. Our results revealed that when properly managed, a torn posterior capsule is compatible with an excellent visual outcome.

Comparison of the Noncontact Tonometer with Goldmann Tonometer

Several kinds of non-contact tonometers have been used since the first non-contact tonometer was introduced in the 1970's in order to measure intraocular pressure with easiness and accuracy. However several problems were still remained because of:he inaccuracy of the non-contact tonometer in high and low range of intraocular pressure. A new non-contact tonometer (Model CT-20, Japan) was recently introduced by Topcon Company to evaluate the clinical efficacy of the non-ccntact tonometers. The authors measured the intraocular pressure with Topcon tonometer, AO tonometer and Pulsair non-contat tonometer and compared the results with those measured with Goldmann tonometer. The results were as follows: 1) The correlation coefficient between Goldmann and Topcon tonometer was 0.8452 (p=0.001), Goldmann and Pulsair tonometer was 0.7084 (p=O.OOl) and Goldmann and AO tonometer was 0.6048 (p=O.OOl) in the normal eyes. 2) The correlation coefficient between Goldmann and Topcon tonometer was 0.8651 (p=0.0001) in the ocular hypertensive or open angle glaucoma eyes. 3) The correlation coefficient between Goldmann and Topcon tonometer was 0.6987 (p=0.000l) in the low lOP eyes. 4) The correlation coefficient between Goldmann and Topcon tonometer was 0.6829 (p=0.0001) in the high myopic eyes. As above, a new-contact tonometer (Model CT-20, Japan) made by Topcon Company was relatively accurate in measuring not only the intraocular pressure of normal eyes but that of ocular hypertensive, low IOP and high myopic eyes.

Malignant Lymphoma on Upper Eyelid

Malignant lymphoma is neoplastic transformation of cells that reside predominantly in lymphoid tissues. Malignant lymphoma involving the eye is a rare disease. Malignant lymphoma of the lid is extremely rare. The authors experienced a case of malignant lymphoma involving the lid in a 62 year-old male patient. At first visit, the patient complained of a palpable painless mass on the left upper eye lid. Later, the malignant lymphoma was confirmed by histopathologic examination. As for treatment, the lid mass excision was performed and 10 MeV electron beam 4000 rad radiotherapy was followed.

Clinical Evaluation of Subluxated Lens

The clinical and statistical evaluations of 25 patients(29 eyes) with subluxated lenses which were extracted at St. Mary's hospital from October 1984 to June 1990. The results were as follows: 1. The average age was 41.3 years and the sex distribution was 23 males and 2 females. 2. The causes were divided by 17 eyes(58.6%) with trauma and 12 eyes(41.4%) without trauma. 3. The associated diseases were cataract(9 eyes; 31.0%), glaucoma(6 eyes; 20.7%), retinal detachment(4 eyes; 13.8%) and uveitis(2 eyes; 6.9%). 4. There were 9 eyes(31.0%) in superonasal, 4 eyes(13.8%) in inferotemporal direction of lens displacement. 5. The surgical procedures were intracapsular cataract extraction(22 eyes; 75.9% ), lens aspiration(3 eyes; 10.3% ), extracapsular cataract extraction(1 eye 3.5% ) and pars plana lensectomy with vitrectomy(3 eyes; 10.3%). 6. There were 9 eyes(28.0%) associated with vitreous protrusion and the vitrectomy were done in 20 eyes(62.5% ). 7. Postoperative corrected visual acuity improved fairly. It was the same as preoperative corrected visual acuity in 7 eyes(24.1%), improved in 21 eyes(72.4%) and worse in 1 eye(3.4%).