Influence of cataract urgery on automated perimetry in patient with glaucoma

PURPOE: To invetigate the influence of cataract urgery on automated perimetry in patient with glaucoma. DEIGN: Interventional cae erie. METHOD: A total of 105 eye of 105 conecutive patient with glaucoma who were cheduled for cataract urgery underwent Humphrey tatic threhold teting (30-2 program) before and at 1 month after urgery. Thee eye were divided into two group baed on the preence of abolute or near abolute (dene) cotomata before urgery (minimum threhold value 5 decibel or le). Change in number of the dene cotomata, mean deviation, pattern tandard deviation, and corrected pattern tandard deviation were analyzed. REULT: No ignificant change were found in the number of dene cotomata and central dene cotomata within five-degree viual field between before and after urgery. In the group with dene cotomata, the mean pattern tandard deviation and corrected pattern tandard deviation worened ignificantly after urgery, wherea the mean deviation improved ignificantly. However, in the group without dene cotomata, the pattern tandard deviation and corrected pattern tandard deviation howed a light improvement, wherea the mean deviation improved ignificantly. When the central cotoma wa preent in two or fewer meridian before urgery, the mean viual acuity after urgery reached 20/25 and wa better than that in patient with three or four central cotomata (P = .0014). CONCLUION: Cataract doe not produce a dene cotoma on automated perimetry. However, becaue it doe produce relative cotomata, actual glaucomatou viual field defect may be hidden to ome extent. When a central dene cotoma i preent before urgery in two or fewer meridian, the patient may well achieve ubtantial improvement in potoperative viual acuity.