ABSTRACT
Lenticular bum can occur as complication after laser iridotomy or retinal photocoagulation. Some authors have, indeed, reported the cases in which focal lenticular opacity developed after laser iridotomy or retinal photocoagulation. Fortunately, it was not progressive in short-term follow up study. When argon laser beam penetrates ocular media, a portion of it is absorbed by lens. So visible lenticular opacity is not developed after argon retinal photocoagulation if lens is clear. But it is not known whether subclinical lenticular opacity can occur after argon laser retinal photocoagulation. We focused argon laser beam onto anterior lens capsule in 35 black and brown rabbit and evaluated development of subclinical lenticular opacity with densitometer 1 and 8 weeks later. We also analyzed lens protein 1 week later. Argon laser energy used was below 20 Joules. The following results were obatined. 1. Lenticular opacity was detected by densitometer in all cases, but it was not detected by slit-lamp. 2. Amount of lenticular opacity was in direct proportion to argon laser energy(p<0.001). 3. Lenticular opacity detected on the 1st week by densitomer was not detectable on the 8th week. 4. The lens protein changes of senile cataract were not found in the lenticular opacity detected on the 1st week.
Subject(s)
Argon , Cataract , Follow-Up Studies , Light Coagulation , RetinaldehydeABSTRACT
Specular microscope has been used to examine the corneal endothelium of humans as a function of age. 82 normal eyes of 42 korean, 8 to 65 years of age, were examined with the contact-type specular microscope, and photographs of the central endothelium were obtained. The endothelial photographs were analyzed to determine mean endothelial cell density and the frequency distribution of cell density for each subject. The mean endothelial cell density was 2686 cell/mm2. The correlation coefficient between age and cell count showed that endothelial cell density decreased significantly with increasing age(p<0.01). No appreciable difference in cell density was found between the right and left eyes of the subjects nor between male and female subjects of similar age.
Subject(s)
Female , Humans , Male , Cell Count , Cornea , Endothelial Cells , Endothelium , Endothelium, CornealABSTRACT
Mooren's ulcer is a chronic, painful ulceration of unknown etiology beginning in the corneal periphery and progressing relentlessly, first circumferentially and then centrally, to involve the entire cornea. The treatment of Mooren's ulcer has had limited sucess. We have experienced a case of bilateral Mooren's ulcer in 68-year-old female, who has been poor general condition. Delimiting lamellar keratectomy and conjunctival excision have been performed. Excised tissues have been examined by histopathologic and immunopathologic method. A brief review of literature is discribed.
