ABSTRACT
<p><b>OBJECTIVE</b>To evaluate tear film stability and tear secretion in patients with diabetes after phacoemulsification.</p><p><b>METHODS</b>Twenty-five diabetic cataract patients and 20 age-matched non-diabetic cataract patients as control underwent phacoemulsification. Tear film break-up time (TFBUT), Schirmer I test (SIT), corneal fluorescein staining, and dry eye symptoms were measured pre- and postoperatively.</p><p><b>RESULTS</b>Diabetics had a decreased preoperative TFBUT and SIT. TFBUT was reduced on Day 1 and recovered on Day 180 postoperatively in both groups. SIT was increased after phacoemulsification, but returned to preoperative levels by Day 180 in non-diabetics, whereas it was lower than preoperative level in diabetics. Positive corneal fluorescein staining was elevated in both groups, and returned to preoperative levels only in controls. Dry eye symptoms were similar to fluorescein staining in both groups.</p><p><b>CONCLUSION</b>Tear secretion was reduced in diabetic cataract patients after phacoemulsification, which worsened dry eye symptoms and predisposed those patients to ocular damage.</p>
Subject(s)
Aged , Female , Humans , Male , Middle Aged , Aging , Cataract , Therapeutics , Cornea , Pathology , Diabetes Complications , Pathology , Therapeutics , Diabetes Mellitus , Pathology , Fluorescein , Pharmacology , Lacrimal Apparatus , Pathology , Phacoemulsification , Tears , Time FactorsABSTRACT
<p><b>OBJECTIVE</b>To investigate corneal refractive changes after scleral buckling surgery.</p><p><b>METHODS</b>In a prospective self-controlled clinical study, we investigated the changes of refractive power, astigmatic power, astigmatic axis, and irregular astigmatic power of anterior corneal surface following scleral buckling surgery for retinal detachment in 30 patients (30 eyes). The corneal shapes were detected by Orbscan II topography at 1 day before surgery, and 1 week, 1 month, and 3 months after surgery. The effects of some surgical factors on the anterior corneal refractive changes were analyzed.</p><p><b>RESULTS</b>After surgery, refractive power on corneal anterior surface decreased significantly in peripheral zone at 1 week (P < 0.01). Astigmatic power increased obviously in central zone. The direction of astigmatic axis matched the direction of the buckle, and changed obviously in central zone after 1 week (P < 0.05). Irregular astigmatic power did not change significantly. There was a significant correlation between the encircling length/the buckle width and the refractive changes of corneal anterior surface.</p><p><b>CONCLUSION</b>Refractive changes of corneal anterior surface following scleral buckling surgery was mainly temporary. Changes in the shape of corneal should be minimized to ensure a favorable postoperative visual acuity.</p>
Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Cornea , Pathology , Corneal Topography , Postoperative Period , Prospective Studies , Refraction, Ocular , Refractive Errors , Retinal Detachment , General Surgery , Scleral Buckling , Methods , Time FactorsABSTRACT
To evaluate the phacoemulsification and intraocular lens implantation in patients with sensory exotropia subsequent to senile cataract. The authors prospectively studied the role of phacoemulsification and intraocular lens implantation on 25 patients by observing visual acuity, ocular alignment, binocular vision and diplopia pre-, 1 month post- and 3 months post-operation. The patients underwent follow-up for three months. Postoperatively, one patient had a corrected visual acuity of 20/50, and 24 patients had 20/40 or better. The ocular alignment, binocular vision and diplopia were resolved spontaneously. Phacoemulsification and intraocular lens implantation performed together is effective on sensory exotropia subsequent to senile cataract.