title: Predictive value of a 1-day, 1-eye trial on the 1-month ocular hypotensive response of latanoprost 0.005%.
abstract: OBJECTIVE
  To determine if a 1-day, 1-eye trial of latanoprost 0.005% was predictive of the 1-month intraocular pressure response in patients with uncontrolled open-angle glaucoma on maximally tolerated medical therapy without latanoprost.
  
  
  METHODS
  One eye of 39 consecutive patients was enrolled in prospective trial of latanoprost 0.005%. An investigator masked to treatment eye and intraocular pressure result measured intraocular pressure at 1 day and 1 month after treatment. The diagnostic precision of the 1-day, 1-eye trial for the 1-month result was determined at a 10%, 20%, and 30% reduction from baseline intraocular pressure.
  
  
  RESULTS
  Treatment produced a mean +/- SD (range) decrease in intraocular pressure from 20.9 +/- 4.6 (14 to 35) mm Hg to 16.6 +/- 3.6 (9 to 26) mm Hg at 24 hours (P <.0001, paired t test). This reduction in intraocular pressure was similar at 1 month with mean +/- SD (range) intraocular pressure of 16.1 +/- 3.1 (9 to 22) mm Hg (P <.0001, paired t test). The accuracy of the 1-day, 1-eye trial for the 1-month response at a 10%, 20%, and 30% reduction of intraocular pressure from baseline intraocular pressure was 96% (chi square = 29.5, P <.001), 74% (chi square = 8.4, P =.004), and 80% (chi square = 10.2, P =.001), respectively.
  
  
  CONCLUSIONS
  A 1-day, 1-eye trial of latanoprost 0.005% is predictive of the 1-month intraocular pressure response in patients with uncontrolled open-angle glaucoma.
authors.affiliation: Devers Eye Institute/Discoveries in Sight, Legacy Health System, 1040 NW 22nd Ave, Ste 200, Portland, OR 97210, USA.
authors.forename: S L
authors.initials: SL
authors.lastname: Mansberger
authors.forename: M S
authors.initials: MS
authors.lastname: Passo
authors.forename: P I
authors.initials: PI
authors.lastname: Schalock
authors.forename: G A
authors.initials: GA
authors.lastname: Cioffi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000959:Antihypertensive Agents / Q000008:administration & dosage / Q000627:therapeutic use*; D005260:Female; D005902:Glaucoma, Open-Angle / Q000188:drug therapy*; D006801:Humans; D007429:Intraocular Pressure / Q000187:drug effects*; D000077338:Latanoprost; D008297:Male; D008875:Middle Aged; D009883:Ophthalmic Solutions; D011237:Predictive Value of Tests; D011446:Prospective Studies; D011461:Prostaglandins F, Synthetic / Q000008:administration & dosage / Q000627:therapeutic use*; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D000959:Antihypertensive Agents; D009883:Ophthalmic Solutions; D011461:Prostaglandins F, Synthetic; D000077338:Latanoprost