1. (1) A school must use the standardized optotype-based distance vision and near vision acuity screening tools approved for each grade as well as the rescreening and referral criteria by grade outlined in Table 1 of this section. When using a screening tool with a single isolated optotype or a single line of optotypes, the tool must include the use of crowding bars or crowding boxes.

2. (2) A school may use an instrument-based vision screening device in lieu of the optotype-based tools outlined in this section. Referral using instrument-based vision screening devices is determined through the manufacturer's criteria. If the instrument-based screening device does not generate a result for a student, a school must screen that student using the optotype-based tools outlined in this section.

   Table 1

   Purpose of Screening	Grade	Screening Tools	Rescreening and Referral Criteria
   Distance Vision	Kindergarten	LEA vision test: Single LEA symbol (at 5 feet), orHOTV letter	Visual acuity worse than 20/40 in either eye
   Distance Vision	Grade one	LEA vision test: Single LEA symbol (at 5 feet), orHOTV letter	Visual acuity worse than 20/32 in either eye
   Distance Vision	Grades two and above	LEA vision tests: LEA symbols or numbers, or HOTV letters, or Sloan letters	Visual acuity worse than 20/32 in either eye
   Near Vision Acuity	Kindergarten	LEA vision tests: LEA symbols near vision, HOTV, or Sloan letters	Visual acuity worse than 20/40 in either eye
   Near Vision Acuity	Grade one and above	LEA vision tests: LEA symbols near vision, HOTV, or Sloan letters	Visual acuity worse than 20/32 in either eye

[Statutory Authority: RCW 28A.210.020. WSR 17-03-009, § 246-760-071, filed 1/4/17, effective 7/1/17.]